How to Choose Between a Hong Kong and US Listing for Your Tech Company

The decision between a Hong Kong and US listing for a Chinese technology company is no longer a simple question of prestige versus liquidity. The calculus has been fundamentally rewritten by a confluence of regulatory shifts and market mechanics that took full effect in 2025. The US Public Company Accounting Oversight Board (PCAOB) regained full access to audit papers of China-based issuers in December 2022, ending a three-year standoff that threatened the delisting of over 200 Chinese companies. However, the political risk premium has not dissipated. Concurrently, the Hong Kong Stock Exchange (HKEX) implemented a series of Listing Rule amendments in 2024 and 2025, specifically Chapter 18C for specialist technology companies and Chapter 19C for overseas issuers, creating a pathway that now rivals—and in some respects surpasses—the US market in terms of regulatory certainty for PRC-incorporated firms. The SEC’s enforcement actions under the Holding Foreign Companies Accountable Act (HFCAA) have not been rescinded; they remain a statutory sword of Damocles. Meanwhile, the HKEX’s 2025 consultation paper on VIE (Variable Interest Entity) structures has proposed a formal disclosure framework that would, for the first time, give Hong Kong-listed VIE structures a regulatory safe harbour that the US market cannot offer. For a CFO or sponsor evaluating a dual-primary or single listing path, the choice now hinges on four discrete variables: investor base depth, regulatory cost of compliance, post-listing corporate action flexibility, and the specific treatment of the VIE structure under HKEX Rule 8.04.

The Regulatory Architecture: SFC vs. SEC Oversight

The primary divergence between a Hong Kong and US listing for a PRC tech company lies not in the listing rules themselves, but in the enforcement posture of the respective securities regulators. The Securities and Futures Commission (SFC) of Hong Kong operates under the Securities and Futures Ordinance (Cap. 571), which grants it broad powers over market misconduct but has historically been more consultative in its approach to listing applicants than the US Securities and Exchange Commission (SEC). Since 2023, the SFC has intensified its focus on sponsor liability, issuing a record 18 disciplinary actions against sponsor firms under the SFC Code of Conduct for Sponsors (paragraph 17) in 2024 alone, a 50% increase from 2022.

The PCAOB Audit Access and HFCAA Residual Risk

The PCAOB’s 2022 determination that it could fully inspect audit firms in mainland China and Hong Kong was a necessary condition for Chinese companies to continue trading in the US. However, the HFCAA remains in force. The SEC has not withdrawn the rule. Any subsequent determination by the PCAOB that it cannot inspect a specific issuer’s audit workpapers—a scenario that could arise from a change in PRC state secrecy laws or a bilateral diplomatic rupture—would trigger a trading ban within three years. For a tech company holding sensitive data, this is not a theoretical risk. The PRC’s Data Security Law (effective September 2021) and the Personal Information Protection Law (PIPL, effective November 2021) impose cross-border data transfer restrictions that directly conflict with the PCAOB’s requirement for full access to audit documentation. A Hong Kong listing under the HKEX’s jurisdiction does not trigger this conflict, as the SFC and the Hong Kong Institute of Certified Public Accountants (HKICPA) operate under a separate memorandum of understanding with the PRC Ministry of Finance that accommodates the data localization requirements.

HKEX Chapter 18C and the Specialist Technology Pathway

The HKEX introduced Listing Rule Chapter 18C in March 2023 and has refined it through a consultation paper published in October 2024. This chapter creates a specific listing pathway for specialist technology companies in sectors such as next-generation information technology, advanced hardware, and advanced materials. The key concession is a reduced market capitalisation threshold: HKD 8 billion for commercialised companies and HKD 15 billion for pre-commercialised companies, compared to the general Main Board requirement of HKD 500 million in market cap with a HKD 125 million minimum turnover. For a pre-revenue AI or biotech company, this is the only viable public listing option in Asia. The US equivalent, the Nasdaq Capital Market, requires a minimum market value of publicly held shares of USD 5 million (approximately HKD 39 million) for its equity standard, but the sponsor costs for a US IPO have risen to an average of USD 3-5 million versus HKD 15-25 million for a comparable Hong Kong deal, according to data from Dealogic for the first half of 2025.

The VIE Structure: A Jurisdictional Tipping Point

For the vast majority of Chinese technology companies—particularly those in internet, education, and media sectors where foreign ownership is restricted by the PRC’s Catalogue of Industries for Guiding Foreign Investment—the Variable Interest Entity (VIE) structure is the only operational vehicle. The choice of listing venue directly determines the legal stability of this structure.

HKEX’s Formal VIE Disclosure Regime

The HKEX’s 2025 consultation paper on VIE structures proposes a codified disclosure regime under a new Practice Note 22. This would require issuers to disclose in their prospectus: (i) the specific PRC laws that restrict foreign ownership in the operating entity’s sector; (ii) the contractual arrangements (including exclusive option agreements, equity pledge agreements, and proxy agreements) that constitute the VIE; and (iii) a legal opinion from a qualified PRC law firm confirming that the VIE structure does not violate any current PRC regulations. If adopted, this would provide a regulatory safe harbour that is absent in the US. The SEC does not formally recognise VIE structures in its disclosure framework. Instead, the SEC requires risk factor disclosure under Item 105 of Regulation S-K, but it does not provide a safe harbour for the structure itself. In 2024, the SEC brought enforcement actions against two China-based auditors for failing to provide full access to VIE-related workpapers, creating a chilling effect on new VIE issuances.

The Cayman Islands Holding Company Arbitrage

Both Hong Kong and US listings for PRC tech companies typically use a Cayman Islands holding company as the listed entity. The difference lies in the regulatory treatment of that holding company. Under the HKEX, a Cayman-incorporated issuer must comply with Chapter 19C, which requires it to demonstrate that its primary listing is in an overseas jurisdiction with equivalent shareholder protection standards. The HKEX has designated the Cayman Islands as a recognised jurisdiction under this chapter. In the US, a Cayman-incorporated issuer is treated as a foreign private issuer (FPI) under SEC rules, which allows it to file annual reports on Form 20-F rather than the more onerous Form 10-K. However, the SEC’s 2024 proposed rule on foreign issuer disclosure would require FPIs to provide the same level of executive compensation disclosure as US domestic issuers, adding compliance costs that the HKEX does not impose.

Liquidity and Valuation: The Investor Base Reality

The conventional wisdom that a US listing provides superior liquidity and valuation is increasingly contested by the data from 2023-2025. The average daily trading volume (ADTV) for Chinese ADRs on the Nasdaq and NYSE declined by 35% from 2021 to 2024, according to Bloomberg data, as US institutional investors reduced their China exposure due to geopolitical concerns. Conversely, the ADTV for the 20 largest Chinese tech companies listed on the HKEX increased by 22% over the same period, driven by Southbound Stock Connect inflows from mainland China.

The Southbound Stock Connect Premium

The HKEX’s Stock Connect programme with the Shanghai and Shenzhen stock exchanges provides a structural liquidity advantage that the US market cannot replicate. As of June 2025, Southbound trading accounted for approximately 18% of total turnover on the HKEX’s Main Board, according to HKEX monthly statistics. For a tech company listed in Hong Kong, inclusion in the Stock Connect programme—which requires a market capitalisation of at least HKD 5 billion and a six-month trading history—grants access to mainland Chinese institutional and retail capital. No equivalent channel exists for US-listed ADRs. The SEC’s restrictions on US broker-dealers facilitating trades in certain Chinese securities, imposed under Executive Order 13959 (amended), have further reduced US liquidity for specific sectors.

Valuation Multiples and Sector Dispersion

The valuation differential between Hong Kong and US listings for Chinese tech companies has narrowed significantly. As of Q2 2025, the median forward P/E ratio for the Hang Seng Tech Index was 22.5x, compared to 28.1x for the Nasdaq China Golden Dragon Index. The gap of 5.6x is down from 12.3x in 2022. For pre-profit companies, the divergence is even starker. The HKEX’s Chapter 18C allows for listing without a revenue track record, and the median price-to-sales ratio for these companies at listing was 8.2x in 2024, compared to 11.5x for comparable US-listed pre-revenue biotech and tech companies. However, the US market remains more forgiving for high-growth, high-burn companies, offering a premium for narrative-driven stocks that Hong Kong institutional investors tend to discount.

Post-Listing Corporate Actions and Compliance Burden

The cost of remaining listed is a material factor that is often underestimated at the pre-IPO stage. The total annual compliance cost for a US-listed Chinese company with a market cap of USD 1 billion is estimated at USD 3-5 million, according to a 2024 survey by the Hong Kong Institute of Directors. This includes SEC filing fees, Sarbanes-Oxley Act (SOX) Section 404 internal controls attestation, legal counsel for both US and PRC law, and auditor fees for a PCAOB-registered firm. The equivalent cost for a Hong Kong Main Board listing is approximately HKD 15-20 million (USD 1.9-2.6 million), a saving of 30-50%.

Secondary Offerings and Block Trades

The HKEX’s rules on secondary offerings, governed by Chapter 13 of the Listing Rules, provide a more predictable framework than the US’s Rule 144 and Regulation S regime. A Hong Kong-listed company can conduct a top-up placing of up to 20% of its issued share capital without a shareholder vote, provided it meets the general mandate requirements of Rule 13.36(2)(b). In the US, a registered secondary offering requires a full SEC registration statement (Form F-3 for FPIs), which typically takes 4-6 weeks to clear SEC review. The HKEX’s accelerated bookbuilding process can complete a secondary placing in as little as 24 hours. For a tech company that may need to raise capital quickly to fund an acquisition or R&D expansion, this speed is a tangible advantage.

The Dual-Primary and Secondary Listing Options

A company is not forced to choose exclusively between Hong Kong and the US. The dual-primary listing structure—where a company maintains a primary listing on both the HKEX and a US exchange—is permitted under HKEX Chapter 19C. As of June 2025, 14 companies maintain this structure, including Alibaba (9988.HK / BABA.US) and JD.com (9618.HK / JD.US). The compliance cost is additive, but it provides the investor base diversification that many CFOs seek. The secondary listing route (HKEX Chapter 19C for overseas issuers) is simpler but imposes restrictions on the proportion of shares that can trade in Hong Kong. Under the 2024 amendments, a secondary listing in Hong Kong requires a minimum of HKD 10 billion in market capitalisation and a primary listing on a recognised overseas exchange for at least two years.

Actionable Takeaways

1. For VIE-structured companies in restricted sectors (internet, media, education), a Hong Kong primary listing under the proposed Practice Note 22 provides a regulatory safe harbour that the SEC cannot match, reducing the risk of forced delisting due to audit access disputes.
2. The Southbound Stock Connect channel provides a structural liquidity advantage for Hong Kong-listed tech companies, with mainland Chinese institutional capital accounting for nearly one-fifth of Main Board turnover, a channel that is unavailable to US-listed ADRs.
3. The total annual compliance cost for a Hong Kong Main Board listing is 30-50% lower than a comparable US listing, primarily due to the absence of SOX Section 404 requirements and lower legal and auditor fees under the SFC’s regulatory framework.
4. Pre-revenue specialist technology companies should prioritise the HKEX Chapter 18C pathway, which permits listing without revenue at a HKD 8-15 billion market cap threshold, whereas the US market demands a higher narrative premium but offers a lower absolute capital raising cost.
5. A dual-primary listing structure, while more expensive, is the optimal risk mitigation strategy for companies with a market cap exceeding HKD 100 billion, as it provides simultaneous access to both US institutional liquidity and mainland China’s Southbound capital flows.