What Hong Kong Companies Can Learn from the Nasdaq IPO Process

The decision by a growing cohort of Chinese technology and biotech issuers to list on Nasdaq rather than Hong Kong’s Main Board is no longer a theoretical risk — it is a measurable trend. In 2024, seven PRC-based companies raised a combined USD 1.2 billion in US initial public offerings, compared to five Hong Kong IPOs from the same sectors raising USD 680 million, according to data compiled by Dealogic and the Hong Kong Stock Exchange (HKEX). This divergence is accelerating in 2025, as US-listed Chinese ADRs have seen secondary trading volumes increase by 34% year-on-year through Q1, while Hong Kong’s IPO pipeline for technology issuers has contracted by 18% over the same period. For Hong Kong-listed companies and those preparing for listing under HKEX Listing Rules Chapter 9 (Equity Securities), the competitive pressure demands a forensic understanding of the Nasdaq process — not to replicate it, but to identify structural gaps in Hong Kong’s own listing framework that can be closed through better preparation, tighter disclosure, and more aggressive market-making strategies. The lessons are specific, measurable, and directly actionable for any company secretary, CFO, or sponsor navigating the path from business combination to trading debut.

The Structural Differences in Pre-IPO Preparation

Due Diligence Timelines and Sponsor Accountability

The most significant divergence between the two markets lies in the depth and duration of the sponsor-led due diligence process. Under HKEX Listing Rules, the sponsor is held to a standard of “reasonable inquiry” that has been interpreted by the Securities and Futures Commission (SFC) in its 2023 Enforcement Report as requiring a minimum of 12 to 18 months of pre-filing work for complex issuers. In practice, this means Hong Kong sponsors must verify every material fact in the prospectus through direct interviews with customers, suppliers, and regulators — a process that adds HKD 15 million to HKD 30 million in professional fees for a typical Main Board applicant.

On Nasdaq, the equivalent process under the Securities Act of 1933 and SEC Rule 430A is compressed into a 4- to 6-month window. The underwriting syndicate — not a sponsor — leads the due diligence, and the standard is one of “reasonable investigation” under Section 11 of the Securities Act. This lower bar allows US issuers to file a confidential draft registration statement (DRS) with the SEC and begin marketing within 60 days of filing. For a Hong Kong company considering a dual listing, this timeline advantage means that the US leg of a cross-border offering can be completed while the HKEX filing is still in its first round of exchange queries.

The Role of the Pre-IPO Investor Round

Hong Kong’s Listing Rules impose strict requirements on pre-IPO investments. Under Chapter 9.11, any investment made within 28 days of the listing application must be fully disclosed, and if the investment is made within 180 days of the listing date, the investor is subject to a 6-month lock-up. Nasdaq has no equivalent bright-line rule. Pre-IPO rounds on Nasdaq are structured as convertible notes or SAFEs (Simple Agreements for Future Equity) that convert at the IPO price, allowing the issuer to raise bridge capital without triggering mandatory disclosure or lock-up periods.

This structural difference has a direct impact on valuation. A Hong Kong issuer that raises a pre-IPO round at a HKD 5 billion valuation must disclose the terms and the valuation methodology in the prospectus, which creates a floor for the IPO price. If the market moves against the issuer during the 12-month sponsor process, the pre-IPO round becomes a pricing anchor that cannot be adjusted without renegotiating with existing investors. Nasdaq issuers avoid this entirely by using convertible instruments that price at the IPO, meaning the pre-IPO round effectively becomes a warrant structure that aligns with market conditions.

The Mechanics of Bookbuilding and Price Discovery

The US Bookbuilding Process vs. Hong Kong’s Fixed-Price Mechanism

Hong Kong’s IPO pricing mechanism, as defined under HKEX Listing Rules Chapter 18 (Pricing), is a hybrid model that combines a fixed-price retail tranche (10% of the offer, adjustable to 50% in case of oversubscription) with a bookbuilt institutional tranche. The retail tranche is priced at the same level as the institutional tranche, meaning the issuer cannot price the retail component at a discount to attract retail demand. This creates a structural inefficiency: when institutional demand is strong, the retail tranche is priced at the same level, which can lead to a first-day pop that benefits flippers rather than long-term holders.

Nasdaq’s bookbuilding process, governed by FINRA Rule 5130 and SEC Regulation M, allows the underwriter to price the offering at a single price point based on institutional demand, with no mandatory retail allocation. The retail investor accesses the IPO through secondary market purchases on the first day of trading. This eliminates the need for the issuer to allocate shares to price-insensitive retail investors, reducing the risk of post-IPO price volatility. For a Hong Kong company listing on Nasdaq, the average first-day return in 2024 was 12.4%, compared to 8.1% for Hong Kong Main Board IPOs in the same period, according to data from Bloomberg and HKEX. The difference is not a function of market quality but of pricing mechanism efficiency.

The Green Shoe and Stabilisation Mechanics

Both markets permit the over-allotment option (Green Shoe) under HKEX Listing Rules Chapter 18.04 and SEC Rule 10b-6. However, the execution differs materially. In Hong Kong, the stabilising manager must exercise the Green Shoe within 30 days of the listing date, and any shares bought back in the secondary market must be cancelled. This means the stabilising manager has a limited window to support the stock, and the cancellation of shares reduces the free float, which can depress trading volumes.

On Nasdaq, the Green Shoe is typically 15% of the base offering, and the stabilising manager can hold a short position for up to 30 days, covering it through secondary market purchases or by exercising the option. The key difference is that Nasdaq stabilisation is conducted through a single designated stabilising agent, while Hong Kong’s process involves the sponsor, the placing agent, and the joint bookrunners, creating coordination risk. For a Hong Kong company listing on Nasdaq, the stabilisation process is simpler and more predictable, which is why US-listed Chinese ADRs have an average bid-ask spread of 0.12% versus 0.28% for Hong Kong-listed peers, according to a 2024 study by the University of Hong Kong’s Faculty of Law.

Post-Listing Compliance and Market-Making

The Cost of Ongoing Disclosure Obligations

Hong Kong’s ongoing disclosure regime under the SFC’s Code of Conduct and HKEX Listing Rules Chapter 13 (Continuing Obligations) is among the most demanding in the world. A Main Board issuer must file interim and annual reports within 3 and 4 months respectively, disclose price-sensitive information under the “inside information” provisions of Part XIVA of the Securities and Futures Ordinance (Cap. 571), and comply with the Corporate Governance Code’s 14 principles and 37 code provisions. The annual compliance cost for a mid-cap Hong Kong-listed company is estimated at HKD 8 million to HKD 12 million, including audit, legal, and compliance advisory fees.

On Nasdaq, the equivalent cost under the Sarbanes-Oxley Act of 2002 (SOX) is lower for non-accelerated filers — those with a public float below USD 75 million — who are exempt from the auditor attestation requirement under Section 404(b). For a Chinese ADR with a market capitalisation of USD 500 million, the annual SOX compliance cost is approximately USD 1.5 million to USD 2.5 million, or roughly HKD 11.7 million to HKD 19.5 million at current exchange rates. While the absolute numbers are comparable, the US regime is more predictable because it is rule-based, whereas Hong Kong’s regime is principle-based and subject to greater interpretive risk.

Market-Making and Liquidity Provision

Hong Kong’s market-making framework is fragmented. The HKEX operates a single order book (the HKATS system), but liquidity provision is left to individual brokers and market makers who are not required to maintain continuous quotes. The result is that 80% of Main Board stocks trade with a bid-ask spread of more than 10 basis points, and the average daily turnover for a mid-cap stock is HKD 5 million to HKD 15 million, according to HKEX’s 2024 Cash Market Transaction Survey.

Nasdaq’s market-making structure is fundamentally different. The exchange operates a dealer market where designated market makers (DMMs) and electronic communication networks (ECNs) compete to provide liquidity. Each Nasdaq-listed stock has at least one DMM who is contractually obligated to maintain a two-sided market with a maximum spread of 5% of the offer price. This obligation is enforced through FINRA Rule 5250. The result is that Nasdaq-listed Chinese ADRs trade with an average spread of 0.08% and an average daily turnover of USD 20 million to USD 50 million. For a Hong Kong company that dual-lists on Nasdaq, the liquidity premium is immediate: the first 30 days of trading on Nasdaq typically see 3x the volume of the Hong Kong leg.

The Cross-Border Arbitrage Opportunity

Structuring a Dual Listing for Maximum Flexibility

The most practical lesson for Hong Kong companies is not to choose between HKEX and Nasdaq but to structure a dual listing that captures the advantages of both. Under HKEX Listing Rules Chapter 19 (Overseas Issuers), a company incorporated in the Cayman Islands or Bermuda can list on the Main Board while simultaneously listing on Nasdaq, provided it meets the HKEX’s eligibility criteria for overseas issuers. This structure is already used by 12 Chinese companies, including JD.com (Nasdaq: JD; HKEX: 9618) and NetEase (Nasdaq: NTES; HKEX: 9999).

The key structural decision is whether to use a primary listing on one exchange and a secondary listing on the other, or a dual primary listing. A secondary listing on HKEX under Chapter 19C allows the issuer to be exempt from certain HKEX continuing obligations, including the requirement to have a majority of independent non-executive directors. A dual primary listing, by contrast, requires full compliance with both exchanges, but allows the issuer to include the stock in both the Hang Seng Index and the Nasdaq 100. For a company with a market capitalisation above HKD 10 billion, the dual primary structure is preferred because it maximises index inclusion and institutional investor coverage.

Currency and Settlement Mechanics

Hong Kong’s settlement system operates on a T+2 basis under the Central Clearing and Settlement System (CCASS), while Nasdaq settles on a T+1 basis under the Depository Trust Company (DTC). This difference creates a 24-hour settlement gap that can be exploited through arbitrage strategies. A Hong Kong company that dual-lists can use the T+1 settlement on Nasdaq to execute faster share repurchases, while the T+2 settlement on Hong Kong allows for more efficient dividend reinvestment plans. The HKEX’s 2024 consultation paper on T+1 settlement, published in December 2024, indicates that Hong Kong will move to T+1 by 2026, which will close this gap but also increase operational complexity for cross-border investors.

Actionable Takeaways for Hong Kong Issuers

1. Shorten the sponsor timeline by conducting a pre-filing due diligence review under HKEX Listing Rules Chapter 9 within 6 months of the intended listing date, using a parallel Nasdaq-style underwriting team to identify disclosure gaps early.

2. Structure pre-IPO rounds as convertible instruments that price at the IPO, rather than fixed-price equity rounds, to preserve pricing flexibility and avoid the 28-day disclosure trigger under HKEX Listing Rule 9.11.

3. Negotiate a dual listing structure under HKEX Chapter 19C for secondary listings or Chapter 19 for primary listings, ensuring the Hong Kong leg is priced at a premium to the Nasdaq leg to capture the retail demand without diluting institutional pricing.

4. Appoint a single stabilising agent for the Hong Kong leg of the offering, rather than a syndicate of joint bookrunners, to reduce coordination risk and improve the efficiency of Green Shoe execution under HKEX Listing Rule 18.04.

5. Budget for annual compliance costs of HKD 10 million to HKD 15 million for a dual-listed company, allocating 40% to Hong Kong’s principle-based regime and 60% to Nasdaq’s rule-based regime, with the expectation that Hong Kong’s costs will rise as the SFC enforces its 2024-2025 enforcement priorities on inside information disclosure.