As filed with the Securities and Exchange Commission on December 28, 2018

Registration No. 333-            

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM F-1

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

Futu Holdings Limited

(Exact name of Registrant as specified in its charter)

Not Applicable

(Translation of Registrant’s name into English)

11/F, Bangkok Bank Building

No. 18 Bonham Strand W, Sheung Wan

Hong Kong S.A.R., People’s Republic of China

+852 2523-3588

(Address, including zip code, and telephone number, including area code, of Registrant’s principal executive offices)

Puglisi & Associates

850 Library Avenue, Suite 204

Newark, Delaware 19711

+1 302-738-6680

(Name, address, including zip code, and telephone number, including area code, of agent for service)

Copies to:

Approximate date of commencement of proposed sale to the public:

as soon as practicable after the effective date of this registration statement.

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box.  ☐

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ☐

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933.

Emerging growth company  ☒

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards† provided pursuant to Section 7(a)(2)(B) of the Securities Act.  ☐

† The term “new or revised financial accounting standard” refers to any update issued by the Financial Accounting Standards Board to its Accounting Standards Codification after April 5, 2012.

CALCULATION OF REGISTRATION FEE

The Registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933 or until the Registration Statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.

The information in this preliminary prospectus is not complete and may be changed. We may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This preliminary prospectus is not an offer to sell these securities and we are not soliciting offers to buy these securities in any state where the offer or sale is not permitted.

PROSPECTUS (Subject to Completion) Issued                    , 2018.

American Depositary Shares

Futu Holdings Limited

Representing              Class A Ordinary Shares

This is an initial public offering of              American depositary shares, or ADSs, by Futu Holdings Limited. Each ADS represents              Class A ordinary shares, par value US$0.00001 per share. It is currently estimated that the initial public offering price per ADS will be between US$             and US$            .

Prior to this offering, there has been no public market for the ADSs or our shares. We intend to apply for the listing of the ADSs on the Nasdaq Global Market under the symbol “FHL.”

We are an “emerging growth company” under applicable U.S. federal securities laws and are eligible for reduced public company reporting requirements.

See “Risk Factors ” beginning on page 18 for factors you should consider before investing in the ADSs.

PRICE US$                     PER ADS

Neither the United States Securities and Exchange Commission nor any other regulatory body has approved or disapproved of these securities or passed upon the accuracy or adequacy of this prospectus. Any representation to the contrary is a criminal offense.

We have granted the underwriters the right to purchase up to an additional ADSs to cover over-allotments within 30 days after the date of this prospectus.

Upon the completion of this offering, our outstanding shares will consist of Class A ordinary shares and Class B ordinary shares, and we will be a “controlled company” as defined under the Nasdaq Stock Market Rules because Mr. Leaf Hua Li, our founder, chairman of the board of directors and chief executive officer, and Qiantang River Investment Limited, an existing shareholder of ours will beneficially own all of our then issued Class B ordinary shares and will be able to exercise         % of the total voting power of our issued and outstanding shares if the underwriters do not exercise their over-allotment option, or             % if the underwriters exercise their over-allotment option in full. Holders of Class A ordinary shares and Class B ordinary shares have the same rights except for voting and conversion rights. Each Class A ordinary share is entitled to one vote, and each Class B ordinary share is entitled to twenty votes and is convertible into one Class A ordinary share at any time by the holders thereof. Class A ordinary shares are not convertible into Class B ordinary shares under any circumstances.

The underwriters expect to deliver the ADSs against payment in U.S. dollars in New York, New York on or about                     , 2018.

Prospectus dated                     , 2018.

TABLE OF CONTENTS

No dealer, salesperson or other person is authorized to give any information or to represent anything not contained in this prospectus or in any free writing prospectus we may authorize to be delivered or made available to you. You must not rely on any unauthorized information or representations. This prospectus is an offer to sell only the ADSs offered hereby, but only under circumstances and in jurisdictions where it is lawful to do so. The information contained in this prospectus is current only as of its date.

Neither we nor any of the underwriters has done anything that would permit this offering or possession or distribution of this prospectus or any filed free writing prospectus in any jurisdiction where action for that purpose is required, other than in the United States. Persons outside the United States who come into possession of this prospectus or any filed free writing prospectus must inform themselves about, and observe any restrictions relating to, the offering of the ADSs and the distribution of this prospectus or any filed free writing prospectus outside of the United States.

Until                     , 2018 (the 25th day after the date of this prospectus), all dealers that buy, sell or trade ADSs, whether or not participating in this offering, may be required to deliver a prospectus. This is in addition to the obligation of dealers to deliver a prospectus when acting as underwriters and with respect to their unsold allotments or subscriptions.

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RISK FACTORS

Risks Related to Our Business and Industry

We have a limited operating history which makes it difficult to evaluate our future prospects.

We launched our online brokerage business in 2012 and experienced significant growth since 2015. Between 2012 and 2015, we focused on continuously improving our platform and technology infrastructure. As our business is built on cutting-edge technology and a majority of our staff come from internet and technology companies, which differentiate us from traditional brokers, we have limited experience in most aspects of our business operation, such as trading, margin financing and securities lending. In addition, we have limited experience in serving our current user and client base. As our business develops and as we respond to competition, we may continue to introduce new service offerings, make adjustments to our existing services, or make adjustments to our business operation in general. Any significant change to our business model that does not achieve expected results may have a material and adverse impact on our financial condition and results of operations. It is therefore difficult to effectively assess our future prospects.

The online brokerage industry may not develop as expected. Prospective users and clients of our services may not be familiar with the development of online brokerage markets and may have difficulty distinguishing our services from those of our competitors. Convincing prospective users and clients of the value of using our services is critical to increasing the amount of transactions on our platform and to the success of our business.

You should consider our business and prospects in light of the risks and challenges we encounter or may encounter given the rapidly evolving market in which we operate and our limited operating history. These risks and challenges include our ability to, among other things:

Our historical growth rates may not be indicative of our future growth.

We have experienced rapid growth in our business and operations since our inception. The trading volume on our platform grew 164.4% from HK$195.9 billion in 2016 to HK$517.9 billion (US$66.2 billion) in 2017 and 101.2% from HK$337.0 billion for the nine months ended September 30, 2017 to HK$678.0 billion (US$86.6 billion) for the same period of 2018. Our total revenues increased by 258.3% from HK$87.0 million in 2016 to HK$311.7 million (US$39.8 million) in 2017, and by 227.5% from HK$178.4 million for the nine months ended

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September 30, 2017 to HK$584.2 million (US$74.6 million) for the same period of 2018. However, our historical growth rates may not be indicative of our future growth, and we may not be able to generate similar growth rates in future periods. We cannot assure you that we will grow at the same rate as we have in the past. If our growth rate declines, investors’ perceptions of our business and business prospects may be adversely affected and the market price of the ADSs could decline. You should consider our prospects in light of the risks and uncertainties that fast-growing companies with limited operating histories in a quickly-evolving industry may encounter.

We may not be able to manage our expansion effectively. Continuous expansion may increase the complexity of our business and place a strain on our management, operations, technical systems, financial resources and internal control functions. Our current and planned personnel, systems, resources and controls may not be adequate to support and effectively manage our future operations. We upgrade our systems from time to time to cater to the need of launching new services and executing increasing trading volume, and the process of upgrading our current systems may disrupt our ability to timely and accurately process information, which could adversely affect our results of operations and cause harm to our business.

Our entrepreneurial and collaborative culture is important to us, and we believe it has been a major contributor to our success. We may have difficulties maintaining our culture to meet the needs of our future and evolving operations as we continue to grow, in particular as we grow internationally. In addition, our ability to maintain our culture as a public company, with changes in policies, practices, corporate governance and management requirements, may be challenging. Failure to maintain our culture could have a material adverse effect on our business.

We are subject to extensive and evolving regulatory requirements in Hong Kong, non-compliance with which, may result in penalties, limitations and prohibitions on our future business activities or suspension or revocation of our licenses and trading rights, and consequently may materially and adversely affect our business, financial condition, operations and prospects. In addition, we are involved in ongoing inquiries and investigations by the HK SFC.

The markets in Hong Kong in which we operate are highly regulated. However, the online-based brokerage service industry (including, for example, the use of cloud-based operating, computing and record keeping technology as well as biometric identification technology) is at a relatively early stage of development, and applicable laws, regulations and other requirements may be changed and adopted from time to time. Our business operations are subject to applicable Hong Kong laws, regulations, guidelines, circulars, and other regulatory guidance, or collectively the “HK Brokerage Service Rules,” including, for example, the SFO and its subsidiary legislation. These HK Brokerage Service Rules set out the licensing requirements, regulate our operational activities and standards, and impose requirements such as maintaining minimum liquidity or capital along with other filing, record keeping and reporting obligations relevant to our business operations. See “Regulation—Overview of the Laws and Regulations Relating to Our Business and Operations in Hong Kong.” Failure to comply with applicable HK Brokerage Service Rules can result in investigations and regulatory actions, which may lead to penalties, including reprimands, fines, limitations or prohibitions on our future business activities or suspension or revocation of our licenses or trading rights. Any outcome may affect our ability to conduct business, harm our reputation and, consequently, materially and adversely affect our business, financial condition, results of operations and prospects.

From time to time, Futu International Hong Kong as a HK SFC-licensed corporation may be subject to or required to assist in inquiries or investigations by relevant regulatory authorities in Hong Kong, principally the HK SFC. The HK SFC conducts on-site reviews and off-site monitoring to ascertain and supervise our business conduct and compliance with relevant regulatory requirements and to assess and monitor, among other things, our financial soundness. We may be subject to such regulatory inquiries and investigations from time to time. If any misconduct is identified as a result of inquiries, reviews or investigations, the HK SFC may take disciplinary actions which would lead to revocation or suspension of licenses, public or private reprimand or imposition of pecuniary penalties against us, our responsible officers, licensed representatives, directors or other officers. Any such disciplinary actions taken against us, our responsible officers, licensed representatives, directors or other officers may have a material and adverse impact on our business operations and financial results. In addition, we

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are subject to statutory secrecy obligations under the SFO whereby we may not be permitted to disclose details on any HK SFC inquiries, reviews or investigations without the consent of the HK SFC.

As of the date of this prospectus, Futu International Hong Kong is subject to ongoing investigations by the HK SFC relating to anti-money laundering laws, practices relating to protection of client assets, and handling and monitoring client orders and trading activities. In addition, Futu International Hong Kong is involved in ongoing regulatory inquiries by the HK SFC relating to client onboarding processes. We are unable to accurately predict the outcome of the inquiries and investigations because of their ongoing nature. See “Business—Ongoing Regulatory Actions.” There remains a risk that on conclusion of the inquiries and investigations, the HK SFC may identify misconduct or material non-compliance and decide to take regulatory actions, which may include, among other things, reprimands, fines, limitations or prohibitions on our future business activities or suspension or revocation of Futu International Hong Kong’s licenses and trading rights. There also remains a risk that we may not be able to rectify our practices to be in compliance with relevant HK Brokerage Service Rules following the identification of any such misconduct or material non-compliance, which may result in the HK SFC taking additional regulatory actions against us in the forms described above. If any such outcome were to arise, there may be a material and adverse effect on our business, results of operations, financial conditions and prospects. Our reputation may also be harmed.

Our client online account opening procedures do not strictly follow the specified steps set out by the relevant authorities in Hong Kong.

As online-based brokerage services in Hong Kong and China and, in particular, the technologies and practices involved in online account opening services are at relatively early stages of development, applicable laws, regulations, guidelines, circulars and other regulatory guidance with regard to online account opening procedures remain evolving and are subject to further changes. Residents in China can open Hong Kong or U.S. trading accounts with us by following the online application procedures summarized in the prospectus. See “Business Section—Our Services—Trading, Clearing and Settlement—Account Opening.” Our system supports the online verification procedures, among others, based on a prospective client’s PRC identification information and debit card issued by a bank based in China. The HK SFC’s current position on the expressly specified non-face-to-face approaches for account opening, including online account opening, in light of HK SFC regulatory requirements is summarized in paragraph 5.1 of the SFC Code of Conduct and SFC circulars dated May 12, 2015, October 24, 2016 and July 12, 2018 (together, the “SFC Circulars”). There are various methods set out under the SFC Circulars for online account opening, one of which is to use e-certification services provided by certification authorities outside Hong Kong whose electronic signature certificates have obtained mutual recognition status accepted by the Hong Kong government when onboarding clients. Our online application procedures for residents in China as discussed above do not strictly follow the specified methods set out in the SFC Circulars. For example, we do not require e-certification for all clients as part of the client onboarding process. In late November 2018, we began to test and implement an e-certification procedure as part of the online onboarding process for a limited number of new applicants. There is no assurance that we will be able to achieve full implementation timely, or at all. If our online account opening procedures are deemed to be not in compliance with the applicable laws, regulations, guidelines, circulars and other regulatory guidance, we may be subject to regulatory actions, which may include, among other things, reprimands, fines, remediation, limitations or prohibitions on our future business activities and/or suspension or revocation of Futu International Hong Kong’s licenses and trading rights. Moreover, if we were required to remediate our account opening procedures for existing clients or to make further adjustments to our online client onboarding process, the remediation or adjustments may have a material adverse impact on our operations, business prospects, user experience and client acquisition and retention.

We do not hold any license or permit for providing securities brokerage business in China. Although we do not believe we engage in securities brokerage business in China, there remain uncertainties to the interpretation and implementation of relevant PRC laws and regulations.

Pursuant to the relevant PRC laws and regulations, no entity or individual shall engage in securities business without the approval of the securities regulatory authority of the State Council. See “Regulations—Overview of

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the Laws and Regulations Relating to Our Business and Operations in China—Regulations on Securities Business.” We do not hold any license or permit in relation to providing securities brokerage business in China, and we do not believe the business we are conducting now through our subsidiaries or consolidated affiliated entities in China is a securities brokerage business in China. In the past, we received inquires relating to our business from certain regulatory authorities in China. We have since then taken measures to modify and enhance our business and platform to be in compliance with the applicable PRC laws and regulations related to securities brokerage business in China. Based on the opinion of our PRC counsel, CM Law Firm, we are in compliance with the applicable PRC laws and regulations related to securities brokerage business in China after such modifications in all material aspects. However, there remain some uncertainties as to how the current and any future PRC laws and regulations will be interpreted or implemented in the context of operating securities related business in China. We cannot assure you that our current operation model, such as redirecting users and clients to open accounts and make transactions outside China, will not be deemed as operating securities brokerage business in China, which may subject us to further inquiries or rectifications. If we are deemed to be operating a securities brokerage business in China, we will be required to obtain relevant licenses or permits from relevant regulatory bodies, including the CSRC, and failure of obtaining such licenses or permits may subject us to regulatory actions and penalties, including fines, suspension of parts or all of our operations in the PRC, and temporary suspension or removal of our websites and mobile application in China. In such cases, our business, financial condition, results of operations and prospects may be materially and adversely affected.

PRC governmental control of currency conversion, cross-border remittance and offshore investment could have a direct impact on the trading volume achieved on our platform. If the government further tightens restrictions on converting Renminbi to foreign currencies, including Hong Kong dollars and U.S. dollars, and/or deems our practice as in violation of PRC laws and regulations, our business will be materially and adversely affected.

Since we launched our online brokerage business, the majority of our clients are Chinese nationals. We do not convert Renminbi into Hong Kong dollars or U.S. dollars for our clients, and require those who would like to trade securities listed on the Hong Kong Stock Exchange or any major stock exchanges in the United States through our platform to deposit funding into their respective trading accounts in Hong Kong in either Hong Kong dollars or U.S. dollars. The PRC government imposes controls on the convertibility of Renminbi into foreign currencies and, in certain cases, currency remittance out of the PRC. Since 2016, the PRC government has tightened its foreign exchange policies and stepped up its scrutiny of outbound capital movement. Under the current regulatory framework, Chinese nationals are limited to a foreign exchange quota of US$50,000 per year for approved uses only, such as tourism and education purposes and Chinese nationals can only engage in offshore investments under capital items through provided method such as Qualified Domestic Institutional Investors. See “Regulations—Overview of the Laws and Regulations Relating to Our Business and Operations in China—Regulations on Offshore Stocks Investment.” If the government further tightens the amount of currency exchange allowed for Chinese nationals, increases the control over remittance of currency out of the PRC, and/or specifically prohibits any exchanges for securities-related investment, the trading activities of Chinese nationals on our platform could be restricted, which would significantly reduce the trading volume on our platform. As our revenues from brokerage commission income depends heavily on the total trading volume facilitated on our platform, the occurrence of any of the above regulatory changes would have a material and adverse impact on our business, operating and financial results.

In addition, under the existing regulations on offshore investment, approval from or registration with appropriate government authorities is required when Renminbi is to be converted into foreign currency for the purpose of offshore investment. As we do not provide currency conversion services related to Renminbi to our Chinese national clients, we do not require our clients to submit evidence of approval or registration from relevant authorities with respect to the foreign currency used for offshore investments. However, there remain uncertainties regarding the interpretation and application of the current laws and regulations with respect to offshore investment and if we are required by any laws or regulation to verify evidence of approval from relevant authorities, we may be deemed as in violation of such PRC laws and regulations. In such cases, we may face regulatory warnings, correction orders, condemnation and fines, and may not be able to conduct our current

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business in the future. We may also be subject to regular inspections from relevant authorities from time to time. If such situations occur, our business, financial condition, results of operations and prospects would be materially and adversely affected.

We face significant competition in the online brokerage industry, and if we are unable to compete effectively, we may lose our market share and our results of operations and financial condition may be materially and adversely affected.

The market for online brokerage services is relatively new, rapidly evolving and intensely competitive. We expect competition to continue and intensify in the future. We face competition from traditional retail brokerage firms and financial service providers in Hong Kong who, in an effort to satisfy the demands of their clients for hands-on electronic trading facilities, universal access to markets, smart routing, better trading tools, lower commissions and financing rates, have embarked upon building such facilities and service enhancements.

In addition, the online brokerage industry exhibits massive opportunities which may attract major internet companies to enter the market by adopting a similar business model, which may significantly affect our market share and sales volume. The release of version 1.1 of the certificate policy for mutual recognition of electronic signature certificates on September 30, 2018 may further intensify such competition. Major international brokerage companies that have large retail online brokerage businesses as well as online brokerage units of commercial banks may take advantage of their established resources and satisfy applicable regulatory requirements through acquisitions and organic development.

We expect competition to increase in the future as current competitors diversify and improve their offerings and as new participants enter the market. We cannot assure you that we will be able to compete effectively or efficiently with current or future competitors. They may be acquired by, receive investment from or enter into strategic relationships with, established and well-financed companies or investors, which would help enhance their competitiveness. Furthermore, the current competitors and new entrants in the online brokerage industry may also seek to develop new service offerings, technologies or capabilities that could render some of the services that we offer obsolete or less competitive, and some of them may adopt more aggressive pricing policies or devote greater resources to marketing and promotional campaigns than we do. The occurrence of any of these circumstances may hinder our growth and reduce our market share, and thus our business, results of operations, financial condition and prospects would be materially and adversely affected.

If we are unable to retain existing clients or attract new clients to increase their trading volume, or if we fail to offer services to address the needs of our clients as they evolve, our business and results of operations may be materially and adversely affected.

We derive a significant portion of our revenues from our online brokerage services provided to our clients. The trading volume on our platform has grown rapidly over the past few years. In 2017, we facilitated trading transactions at the amount of HK$517.9 billion (US$66.2 billion) in aggregate, representing a 164.4% increase in trading volume from 2016. For the nine months ended September 30, 2018, we facilitated trading transactions at the amount of HK$678.0 billion (US$86.6 billion) in aggregate, representing a 101.2% increase in trading volume from the same period in 2017. Also, as of December 31, 2017, the number of our paying clients grew 125.8% as compared to the number as of December 31, 2016, and grew 98.4% as of September 30, 2018 as compared to the number as of September 30, 2017. To maintain the high growth momentum of our platform, we depend on retaining current clients and attracting more new clients. If there is insufficient demand for our online brokerage and margin financing services, we might not be able to maintain and increase our trading volume and revenues as we expect, and our business and results of operations may be adversely affected.

Our success depends largely on our ability to retain existing clients, in particular those that have highly frequent transactions. Our clients may not continue to place trading orders or increase the level of their trading activities on our platform if we cannot match the prices offered by other market players or if we fail to deliver satisfactory services. Failure to deliver services in a timely manner at competitive prices with satisfactory experience will cause our clients to lose confidence in us and use our platform less frequently or even stop using our platform altogether, which in turn will materially and adversely affect our business. Even if we are able to provide high-quality and satisfactory services on our platform in a timely manner and at favorable price terms,

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we cannot assure you that we will be able to retain existing clients, encourage repeat and increase trading transactions due to reasons out of our control, such as our clients’ personal financial reasons or the deterioration of the capital markets condition.

We must stay abreast of the needs and preferences of our clients to serve their evolving trading needs as their investment demands change. If we fail to retain our existing clients by offering services that cater to their evolving investment and trading needs, we may not be able to maintain and continue to grow the trading volume on our platform, and our business and results of operations may be adversely affected. In addition, if we are unable to maintain, enhance or develop the methods we use to retain clients, the costs of client retention will significantly increase, and our ability to retain clients may be harmed.

Because our revenues and profitability depend largely on clients’ trading volume, they are prone to significant fluctuations and are difficult to predict.

Our revenues and profitability depend in part on the level of trading activity of the securities of our clients, which are often affected by factors beyond our control, including economic and political conditions, broad trends in business and finance and changes in the markets in which such transactions occur. Weaknesses in the markets in which we operate, including economic slowdowns, have historically resulted in reduced trading volumes for us. Declines in trading volumes generally result in lower revenues from transaction execution activities. Lower levels of volatility generally have the same directional impact. Declines in market values of securities or other financial instruments can also result in illiquid markets, which can also result in lower revenues and profitability from transaction execution activities. Lower price levels of securities and other financial instruments, as well as compressed bid/ask spreads, which often follow lower pricing, can further result in reduced revenues and profitability. These factors can also increase the potential for losses on securities or other financial instruments held in inventory and failures of buyers and sellers to fulfill their obligations and settle their trades, as well as claims and litigation. Any of the foregoing factors could have a material adverse effect on our business, financial condition, results of operations and cash flows.

Our business is also subject to general economic and political conditions in Hong Kong, the PRC and abroad, such as macroeconomic and monetary policies, legislation and regulations affecting the financial and securities industries, upward and downward trends in the business and financial sectors, inflation, currency fluctuations, availability of short-term and long-term funding sources, cost of funding and the level and volatility of interest rates. For example, a drop in the capital markets performance as a result of the ongoing trade disputes between China and the United States could negatively impact our revenues and profitability. As a result of these risks, our income and operating results may be subject to significant fluctuations.

Our current level of commission and fee rates may decline in the future. Any material reduction in our commission or fee rates could reduce our profitability.

We derive a significant portion of our revenues from commissions and fees paid by our clients for trading securities through our platform. For the years ended December 31, 2016 and 2017 and the nine months ended September 30, 2018, our brokerage commission income and handling charge income amounted to HK$74.5 million, HK$184.9 million (US$23.6 million) and HK$294.7 million (US$37.7 million), representing 85.6%, 59.3% and 50.4% of our total revenues during the same periods, respectively. We may experience pressure on our commission or fee rates as a result of competition we face in the online brokerage service industry. Some of our competitors offer a broader range of services to a larger client base, and enjoy higher trading volumes, than we do. Consequently, our competitors may be able and willing to offer trading services at lower commission or fee rates than we currently offer or may be able to offer. For example, some banks in Hong Kong and the United States have started to offer zero commission fees or similar policies to attract securities investors. As a result of this pricing competition, we could lose both market share and revenues. We believe that any downward pressure on commission or fee rates would likely continue and intensify as we continue to develop our business and gain recognition in our markets. A decline in our commission or fee rates could lower

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our revenues, which would adversely affect our profitability. In addition, our competitors may offer other financial incentives such as rebates or discounts in order to induce trading in their systems rather than in ours. If our commission or fee rate decreases significantly, our operating and financial results may be materially and adversely affected.

Fluctuations in market interest rates may negatively affect our financial condition and results of operations.

We derive a part of our revenues from charging interests on margin balances in connection with our margin financing and security lending businesses. For the years ended December 31, 2016 and 2017 and the nine months ended September 30, 2018, our revenues from interest income derived from our margin financing and securities lending businesses amounted to HK$1.8 million, HK$65.5 million (US$8.4 million) and HK$175.9 million (US$22.5 million), representing 2.0%, 21.0% and 30.1% of our total revenues during the same periods, respectively. For the same periods, our interest income derived from bank deposits were HK$4.0 million, HK$34.1 million (US$4.4 million) and HK$74.2 million (US$9.5 million) , representing 4.6%, 10.9% and 12.7% of our total revenues during the same years, respectively. The trend of the level of interest rates is an important factor affecting our earnings. A decline in interest rates may have a negative impact on our interest income and thus ultimately adversely impact our total revenues. While we generally derive higher interest income when there is an increase in market interest rates, a rise in interest rates may also cause our interest expenses to increase. If we are unable to effectively manage our interest rate risk, changes in interest rates could have a material adverse effect on our profitability.

Although our management believes that it has implemented effective management strategies to reduce the potential effects of changes in interest rates on our results of operations, any substantial, unexpected or prolonged change in market interest rates could have a material adverse effect on our financial condition and results of operations. Also, our interest rate risk modeling techniques and assumptions likely may not fully predict or capture the impact of actual interest rate changes on our balance sheet. For further discussion of how changes in interest rates could impact us, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Quantitative and Qualitative Disclosures about Market Risk—Interest Rate Risk” of this prospectus.

We may not be able to develop our margin financing and securities lending business as expected and may be exposed to credit risks related to these businesses. In addition, we need adequate funding at reasonable costs to successfully operate our margin financing business, and access to adequate funding at reasonable costs cannot be assured.

Our margin financing and securities lending businesses may not develop as expected if clients fail to perform contractual obligations or the value of collateral held to secure the obligations is inadequate. We have adopted comprehensive internal policies and procedures designed to manage such risks. For example, once the margin value falls below the outstanding amount of the relevant loan extended as a result of a market downturn or adverse movement in the prices of the pledged securities, we will make a margin call requesting the client to deposit additional funds, sell securities or pledge additional securities to top up their margin value. If the client’s margin value still falls below the required standard, we will initiate our liquidation protection mechanism on a real-time basis to bring the client’s account into margin compliance. Nevertheless, we cannot assure you that we will not be exposed to any credit risks associated with our margin financing and securities lending businesses. See “—Our risk management policies and procedures may not be fully effective in identifying or mitigating risk exposure in all market environments or against all types of risks.”

Moreover, the growth and success of our margin financing business depend on the availability of adequate funding to meet our client demand for loans on our platform. We derive the funding for our margin financing business from a variety of sources, including funding secured from commercial banks, other licensed financial institutions and other parties, prior to this offering as well as financing generated from our business operations. To the extent there is insufficient funding from institutional funding partners who are willing to accept the credit risk related to the collateral from our clients, the funds available for our margin financing business might be

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limited and our ability to provide margin financing services to our clients to address their demand for loans would be adversely impacted. In addition, as we strive to offer our clients competitively priced services and the online brokerage market is intensely competitive, we may attempt to further reduce our interest expenses from our funding partners. If we cannot continue to maintain our relationship with these funding partners and obtain adequate funding at reasonable costs, we may not be able to continue to offer or grow our margin financing business. To the extent that our funding sources find the risk-adjusted returns with us less attractive, we may not be able to obtain the requisite level of funding at reasonable costs, or at all. If our platform is unable to provide our clients with margin loans or fund the loans on a timely basis due to insufficient funding or less favorable pricing compared to those of our competitors, it would harm our business, financial condition and results of operations.

If we fail to respond in a timely and cost-effective manner to the needs of our users and clients or if our new service offerings do not achieve sufficient market acceptance, our business and results of operations may be materially and adversely affected.

Our future success will depend in part on our ability to develop and introduce new service offerings to respond to the evolving needs of our users and clients in a timely and cost-effective manner. We provide services in markets that are characterized by rapid technological change, evolving industry standards, frequent new service introductions, and increasing demand for higher levels of client experience. In recent years, we have expanded our service offerings for our users and clients from online brokerage services to margin financing services and further to other ancillary tools and functions and may continue to expand our new service offerings in the future. However, we have limited experience in new service offerings, and expansion into new service offerings may involve new risks and challenges that we may not have experienced before. We cannot assure you that we will be able to overcome such new risks and challenges and make our new service offerings successful.

Our ability to anticipate and identify the evolving needs of our users and clients and to develop and introduce new service offerings to address such needs will be a significant factor in maintaining or improving our competitive position and prospects for growth. We may also have to incur substantial unanticipated costs to maintain and further strengthen such ability. Our success will also depend on our ability to develop and introduce new services and enhance existing services for our users and clients in a timely manner. Even if we introduce new and enhanced services to the market, they may not achieve market acceptance.

We believe that we must continue to make investments to support ongoing research and development in order to develop new or enhanced service offerings to remain competitive. We need to continue to develop and introduce new services that incorporate the latest technological advancements in response to evolving user and client needs. Our business and results of operations could be adversely affected if we do not anticipate or respond adequately to technological developments or the changing needs of our users and clients. We cannot assure you that any such investments in research and development will lead to any corresponding increase in revenue.

We depend on our proprietary technology, and our future results may be impacted if we cannot maintain technological superiority in our industry.

Our success in the past has largely been attributable to our sophisticated proprietary technology that has empowered the efficient operations of our platform. We have benefited from the fact that the type of proprietary technology equivalent to which we employ has not been widely available to our competitors. If our technology becomes more widely available to our current or future competitors for any reason, our operating results may be adversely affected.

Additionally, to keep pace with changing technologies and client demands, we must correctly interpret and address market trends and enhance the features and functionality of our technology in response to these trends, which may lead to significant research and development costs. We may be unable to accurately determine the needs of our users and clients or the trends in the online brokerage industry or to design and implement the

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appropriate features and functionality of our technology in a timely and cost-effective manner, which could result in decreased demand for our services and a corresponding decrease in our revenue. Also, any adoption or development of similar or more advanced technologies by our competitors may require that we devote substantial resources to the development of more advanced technology to remain competitive. The markets in which we compete are characterized by rapidly changing technology, evolving industry standards and changing trading systems, practices and techniques. Although we have been at the forefront of many of these developments in the past, we may not be able to keep up with these rapid changes in the future, develop new technology, realize a return on amounts invested in developing new technologies or remain competitive in the future.

In addition, we must protect our systems against physical damage from fire, earthquakes, power loss, telecommunications failures, computer viruses, hacker attacks, physical break-ins and similar events. Any software or hardware damage or failure that causes interruption or an increase in response time of our proprietary technology could reduce client satisfaction and decrease usage of our services.

Unexpected network interruptions, security breaches or computer virus attacks and system failures could have a material adverse effect on our business, financial condition and results of operations.

Our internet-based business depends on the performance and reliability of the internet infrastructure. We cannot assure you that the internet infrastructure we depend on will remain sufficiently reliable for our needs. Any failure to maintain the performance, reliability, security or availability of our network infrastructure may cause significant damage to our ability to attract and retain users and clients. Major risks involving our network infrastructure include:

Any network interruption or inadequacy that causes interruptions in the availability of our online and mobile platforms or deterioration in the quality of access to our online and mobile platforms could reduce user and client satisfaction and result in a reduction in the activity level of our users and clients as well as the number of clients making trading transactions on our platform. Furthermore, increases in the volume of traffic on our online and mobile platforms could strain the capacity of our existing computer systems and bandwidth, which could lead to slower response times or system failures. The internet infrastructure we depend on may not support the demands associated with continued growth in internet usage. This could cause a disruption or suspension in our service delivery, which could hurt our brand and reputation. We may need to incur additional costs to upgrade our technology infrastructure and computer systems in order to accommodate increased demand if we anticipate that our systems cannot handle higher volumes of traffic and transaction in the future.

Failure or poor performance of third-party software, infrastructure or systems on which we rely could adversely affect our business.

We rely on third parties to provide and maintain certain infrastructure that is critical to our business. For example, a strategic partner provides services to us in connection with various aspects of our operations and systems. If such services become limited, restricted, curtailed or less effective or more expensive in any way or become unavailable to us for any reason, our business may be materially and adversely affected. The infrastructure of our third-party service providers may malfunction or fail due to events out of our control, which could disrupt our operations and have a material adverse effect on our business, financial condition, results of operations and cash flows. Any failure to maintain and renew our relationships with these third parties on

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commercially favorable terms, or to enter into similar relationships in the future, could have a material adverse effect on our business, financial condition, results of operations and cash flows.

We also rely on certain third-party software, third-party computer systems and service providers, including clearing systems, exchange systems, alternate trading systems, order-routing systems, internet service providers, communications facilities and other facilities. Any interruption in these third-party services or software, deterioration in their performance, or other improper operation could interfere with our trading activities, cause losses due to erroneous or delayed responses, or otherwise be disruptive to our business. If our arrangements with any third party are terminated, we may not be able to find an alternative source of software or systems support on a timely basis or on commercially reasonable terms. This could also have a material adverse effect on our business, financial condition, results of operations and cash flows.

If major mobile application distribution channels change their standard terms and conditions in a manner that is detrimental to us, or terminate their existing relationship with us, our business, financial condition and results of operations may be materially and adversely affected.

We currently rely on Apple’s app store, Google’s Play Store and major PRC-based Android app stores to distribute our Futu NiuNiu mobile application to users. As such, the promotion, distribution and operation of our application are subject to such distribution platforms’ standard terms and policies for application developers, which are subject to the interpretation of, and frequent changes by, these distribution channels. If these third-party distribution platforms change their terms and conditions in a manner that is detrimental to us, or refuse to distribute our application, or if any other major distribution channel with which we would like to seek collaboration refuses to collaborate with us in the future, our business, financial condition and results of operations may be materially and adversely affected.

If we fail to protect the confidential information of our users and clients, whether due to cyber-attacks, computer viruses, physical or electronic break-ins or other reasons, we may be subject to liabilities imposed by relevant laws and regulations, and our reputation and business may be materially and adversely affected.

We collect, store and process certain personal and other sensitive data from our users and clients, which makes us a potentially vulnerable target to cyber-attacks, computer viruses, physical or electronic break-ins or similar disruptions. While we have taken steps to protect the confidential information that we have access to, our security measures could be breached. Because the techniques used to sabotage or obtain unauthorized access to systems change frequently and generally are not recognized until they are launched against a target, we may not be able to anticipate these techniques or implement adequate preventative measures. Any accidental or willful security breaches or other unauthorized access to our system could cause confidential user and client information to be stolen and used for criminal purposes. Security breaches or unauthorized access to confidential information could also expose us to liability related to the loss of the information, time-consuming and expensive litigation and negative publicity. We have not experienced any material cyber-security breaches or been subject to any material breaches of any of our cyber-security measures in the past. If security measures are breached because of third-party action, employee error, malfeasance or otherwise, or if design flaws in our technology infrastructure are exposed and exploited, our relationships with users and clients could be severely damaged, we could incur significant liability and our business and operations could be adversely affected.

We are subject to governmental regulation and other legal obligations related to the protection of personal data, privacy and information security in the regions where we do business, and there has been and may continue to be a significant increase in such laws that restrict or control the use of personal data. See “Regulations—Overview of the Laws and Regulations Relating to Our Business and Operations in China—Regulations on Cybersecurity and Privacy.” In China, the Cyber Security Law became effective in June 2017 and requires network operators to follow the principles of legitimacy in collecting and using personal information. In addition, the Personal Information Security Specification, or China Specification, came into force on May 1, 2018. Although the China Specification is not a mandatory regulation, it nonetheless has a key implementing role in

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relation to China’s Cyber Security Law in respect to protecting personal information in China. Furthermore, it is likely that the China Specification will be relied on by Chinese government agencies as a standard to determine whether businesses have abided by China’s data protection rules. Furthermore, under the China Specification, the data controller must provide the purpose of collecting and using subject personal information, as well as the business functions of such purpose, and the China Specification requires the data controller to distinguish its core function from additional functions to ensure the data controller will only collect personal information as needed. Similarly, Hong Kong also has its data privacy legislation that regulates the collection, use and handling of personal data. Under the relevant legislation, data users are required to comply with various data protection principles in relation to the requirement of lawful and fair collection of personal data, consent of data subjects, retention of personal data, use and disclosure of personal data, security of personal data, personal data policies and practices, and rights to access and correction of personal data.

There are uncertainties as to the interpretation and application of laws in one jurisdiction which may be interpreted and applied in a manner inconsistent to another jurisdiction and may conflict with our current policies and practices or require changes to the features of our system. We cannot assure that our existing user information protection system and technical measures will be considered sufficient under applicable laws and regulations. If we are unable to address any information protection concerns, any compromise of security that results unauthorized disclosure or transfer of personal data, or to comply with the then applicable laws and regulations, we may incur additional costs and liability and result in governmental enforcement actions, litigation, fines and penalties or adverse publicity and could cause our users and clients to lose trust in us, which could have a material adverse effect on our business, results of operations, financial condition and prospects. We may also be subject to new laws, regulations or standards or new interpretations of existing laws, regulations or standards, including those in the areas of data security and data privacy, which could require us to incur additional costs and restrict our business operations.

We have not obtained certain relevant licenses from PRC authorities in connection with some of the information and services available on our platform.

PRC regulations impose sanctions for engaging in disseminating analysis, forecasting, advisory or other information related to securities and securities markets without having obtained the Securities Investment Consultancy Qualifications in China. See “Regulation—Overview of the Laws and Regulations Relating to Our Business and Operations in China—Regulations on the Securities Investment Consulting Service.” We have not obtained the Securities Investment Consultancy Qualifications in China. Without the required qualifications, we should refrain from as well as explicitly prohibit our users from sharing information related to securities analysis, forecasting or advisory on our platform. However, we cannot assure you that our users will not post articles or share videos that contain analysis, forecasting or advisory content related to securities on our platform. If any of the information or content displayed on our platform is deemed as analysis, forecasting, advisory or other information related to securities or securities markets, or any of our business in the PRC is deemed to be a service providing such information, we may be subject to regulatory measures including warnings, public condemnation, suspension of relevant business and other measures in accordance with applicable laws and regulations. Any such penalties may disrupt our business operations or materially and adversely affect our business, financial condition and results of operations.

In addition, as part of our services, we allow users who register to be hosts to upload and share videos, in our NiuNiu Classroom, a video-based investor education program that offers basics on the Hong Kong and the U.S. securities markets. According to the PRC Administrative Provisions on Internet Audio-Video Program Services, the provider of audio-video service, such as NiuNiu Classroom, is required to obtain the Audio and Video Service Permission. See “Regulation—Overview of the Laws and Regulations Relating to Our Business and Operations in China—Regulation on Internet Audio-Visual Program Services.” We have not obtained such license for providing internet audio-video program services through our platform in China and may not be able to obtain such license in a timely manner, or at all. We have not received any notices nor have we been subject to

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regulatory measures from the National Radio and Television Administration as of the date of this prospectus. However, if we are required to obtain an Audio and Video Service Permission or other additional licenses or approvals in connection with our video-based services in China, we may be subject to various penalties, such as confiscation of the net revenues that were generated through the unlicensed internet activities, imposition of fines and termination or restriction of such service offering.

Furthermore, PRC regulations require platforms that disseminate internet news and information services to obtain the License for Internet News Information Services. See “Regulation—Overview of the Laws and Regulations Relating to Our Business and Operations in China—Regulation on Internet News Dissemination.” We have not obtained such license and may not be able to obtain such license in a timely manner, or at all. As our platform displays news and information related to the financial market, we may be deemed as engaging in disseminating news and information through the internet and subject to penalties including imposition of fines and termination or restriction of such service offering. In addition, the PRC government may impose specific requirement on financial information services, which may also affect our business and operations.

PRC laws and regulations are evolving, and there are uncertainties relating to the regulation of different aspects of the services we provide through our platforms in China. We cannot assure you that we will not be found in violation of any future laws and regulations or any of the laws and regulations currently in effect due to changes in or discrepancies with respect to the relevant authorities’ interpretation of these laws and regulations. In addition, we may be required to obtain additional license or approvals, and we cannot assure you that we will be able to timely obtain or maintain all the required licenses or approvals or make all the necessary filings in the future.

Employee misconduct could expose us to significant legal liability and reputational harm.

We operate in an industry in which integrity and the confidence of our users and clients are of critical importance. During our daily operations, we are subject to the risks of errors and misconduct by our employees, which include:

If any of our employees engages in illegal or suspicious activities or other misconduct, we could suffer serious harm to our reputation, financial condition, client relationships and ability to attract new clients and even be subject to regulatory sanctions and significant legal liability. For example, a current employee of ours was previously investigated and imposed a regulatory sanction by the HK SFC due to certain misconduct in violation of regulatory rules that he committed when he worked for his former employer. Although such incident occurred before the employee joined our company and is unrelated to us, the sanction was imposed against such employee during his employment with us and his ability to perform certain regulated functions at his current employment with us was temporary impaired due to the sanction. We may also be subject to negative publicity from the sanction that would adversely affect our brand, public image and reputation, as well as potential challenges, suspicions, investigations or alleged claims against us. It is not always possible to deter misconduct by our employees or senior management during the ongoing operations of our business or uncover any misconduct occurred in their past employment, and the precautions we take to detect and prevent any misconduct may not always be effective. Misconduct by our employees, or even unsubstantiated allegations of misconduct, could result in a material adverse effect on our reputation and our business.

We had incurred net losses in the past, and we may continue to incur losses in the future.

We had incurred net losses since our inception. In 2016 and 2017, we had net losses of HK$98.5 million and HK$8.1 million (US$1.0 million). Although we have become profitable since 2018, we cannot assure you that

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we continue to be profitable in the future. We anticipate that our operating costs and expenses will increase in the foreseeable future as we continue to grow our business, attract users and clients, further enhance and develop our service offerings, enhance our technology capabilities and increase our brand recognition. These efforts may prove more costly than we currently anticipate, and we may not succeed in increasing our revenues sufficiently to offset these higher expenses. There are other external and internal factors that could negatively affect our financial condition. For example, the trading volume achieved on our platform may be lower than expected, which may lead to lower than expected revenues. Furthermore, we have adopted a share incentive plan in the past and may adopt new share incentive plans in the future, which have caused, and will result in, significant share-based compensation expenses to us. We generate a substantial majority of our total revenues from commission fees charged to clients who trade on our platform. Any material decrease in our commission fees would have a substantial impact on our financial conditions. As a result of the foregoing and other factors, we may continue to incur net losses in the future.

If there is any negative publicity with respect to us, our industry peers or our industries in general, our business and results of operations may be materially and adversely affected.

Our reputation and brand recognition plays an important role in earning and maintaining the trust and confidence of high net worth individuals or enterprises that are current or potential users and clients. Our reputation and brand is vulnerable to many threats that can be difficult or impossible to control, and costly or impossible to remediate. Regulatory inquiries or investigations, lawsuits initiated by clients or other third parties, employee misconduct, perceptions of conflicts of interest and rumors, among other things, could substantially damage our reputation, even if they are baseless or satisfactorily addressed. In addition, any perception that the quality of our online brokerage and other financial services may not be the same as or better than that of other online brokerage and financial service firms can also damage our reputation. Moreover, any negative media publicity about the financial service industry in general or product or service quality problems of other firms in the industry, including our competitors, may also negatively impact our reputation and brand. If we are unable to maintain a good reputation or further enhance our brand recognition, our ability to attract and retain users, clients, third-party partners and key employees could be harmed and, as a result, our business and revenues would be materially and adversely affected.

We may not succeed in promoting and sustaining our brand, which could have an adverse effect on our future growth and business.

A critical component of our future growth is our ability to promote and sustain our brand. Promoting and positioning our brand and platform will depend largely on the success of our marketing efforts, our ability to attract users and clients cost-efficiently and our ability to consistently provide high-quality services and a superior experience. We have incurred and will continue to incur significant expenses related to advertising and other marketing efforts, which may not be effective and may adversely affect our net margins.

In addition, to provide a high-quality user and client experience, we have invested and will continue to invest substantial amounts of resources in the development and functionality of our platform, website, technology infrastructure and client service operations. Our ability to provide a high-quality user and client experience is also highly dependent on external factors over which we may have little or no control, including, without limitation, the reliability and performance of software vendors and business partners. Failure to provide our users and clients with high quality services and experience for any reason could substantially harm our reputation and adversely impact our efforts to develop a trusted brand, which could have a material adverse effect on our business, results of operations, financial condition and prospects.

Fraudulent or illegal activities on our platform could negatively impact our brand and reputation and cause the loss of users and clients. As a result, our business may be materially and adversely affected.

We have implemented stringent internal control policies and anti-money laundering and other anti-fraud rules and mechanisms on our platform. Nevertheless, we remain subject to the risk of fraudulent or illegal

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