What ADR holders should know about HFCAA and Hong Kong dual-listing

If you hold a US-listed Chinese ADR, one worry sits underneath all the others: "Could a rule I have no control over force my stock off the US market — and if it does, what happens to my shares?" This guide answers that from a holder's point of view: the audit-inspection rule at the heart of the Holding Foreign Companies Accountable Act (HFCAA), what a US delisting would actually do to an ADR programme, which names already carry a Hong Kong line to fall back on, and how the conversion path works. It is general information, not investment advice, and not a recommendation to buy, sell or convert anything.

The audit-inspection rule, in one paragraph

US law requires that the Public Company Accounting Oversight Board (PCAOB) be able to inspect the auditor of any company listed on a US exchange. The HFCAA, passed in 2020, says that if the PCAOB cannot inspect a company's auditor for three consecutive years, the SEC must remove that company from US exchanges. Because China long restricted inspection of mainland- and Hong-Kong-based auditors on national-security grounds, US-listed Chinese companies sit under this mechanism as a group. A 2022 agreement gave inspectors access and paused the clock, but the arrangement can be revoked and the underlying legal conflict was never resolved. For the full policy history — the PCAOB dispute, the 2026 escalation and the first completed removals — see Chinese ADR delisting risk.

Why the question is live again

The risk resurfaced in February 2025, when the US administration issued an "America First Investment Policy" memo signalling renewed scrutiny of Chinese listings and the possibility of tougher enforcement. The scale is large: according to the US-China Economic and Security Review Commission (USCC), as of 7 March 2025 there were 286 Chinese companies listed on US exchanges with a combined market capitalisation of about US$1.1 trillion (USCC, Chinese Companies Listed on Major U.S. Stock Exchanges, March 2025). Commentators note that companies with a Hong Kong dual-primary or eligible secondary listing are the best protected, because they keep a trading venue even if the US listing ends (White & Case; China Briefing). These are external, dated facts — verify current figures before relying on them.

What a delisting does to an ADR programme

An ADR is a receipt issued by a depositary bank against the company's underlying shares. A US delisting removes those receipts from the NYSE/Nasdaq — it does not cancel the underlying ownership. In practice, for US-listed Chinese names the common outcomes are:

• Convert to the Hong Kong line. Where the company also trades in Hong Kong, brokers increasingly let holders convert the ADR into the Hong Kong ordinary shares. This is the single biggest reason a dual listing matters.
• Trade over-the-counter (OTC). Delisted ADRs often continue trading OTC in the US, typically with thinner liquidity and wider spreads.
• Depositary programme changes. The depositary may terminate or amend the programme, which can trigger fees or a wind-down window — the mechanics vary by programme and broker.

The mechanics are no longer hypothetical. The maintained China ADR delisting watch logs one completed, dated removal in this cycle — most recently Tian Ruixiang Holdings (TIRX), nasdaq removal completed on 2026-07-06. Each row cites its own filing; the page never fabricates an event. As a backdrop, roughly 174 issuers sit on the SEC's HFCAA identification framework (as of 2026-07-09) — a name with no Hong Kong or Singapore secondary listing is the most exposed, since holders can be left without a ready venue.

Which names already hold a Hong Kong line

The single most useful thing to check about any holding is whether a Hong Kong line already exists. The table below is generated directly from the WealthyTec universe: it lists the US-listed names in our data whose issuer also trades on the Hong Kong Stock Exchange (HKEX). It reports only the observable fact that a Hong Kong ticker exists; it does not assert whether that line is dual-primary or secondary — confirm the structure on the company's own filings. Names with no Hong Kong twin in our dataset are shown as n/a further below rather than assumed either way.

Every US symbol above links to its own company page. The list is derived from the dataset, so it stays honest as the universe changes — but listing structures move, so treat it as a starting point and confirm the current status on the company's filings.

The other side of the check matters just as much. Some of the most-cited US-listed Chinese names show no Hong Kong twin in our dataset — for example PDD Holdings (PDD) (which operates Pinduoduo and Temu) and Full Truck Alliance (YMM). For those, the Hong Kong column is n/a: there is no observable Hong Kong fallback in our data, which is exactly the exposure the HFCAA conversation is about. This is a factual, dataset-level observation, not a call on either company. For the share-class mechanics underneath, see ADR vs H-share vs A-share and Chinese ADRs explained.

Three structures — and why the difference matters

• Dual primary listing. Independently listed in both the US and Hong Kong; a US removal leaves the Hong Kong listing essentially unaffected — the most insulated position.
• Secondary listing. The Hong Kong line is secondary to the US primary and is designed to convert to primary automatically if the US listing is removed, with a possible grace period on the listing rules.
• No Hong Kong line at all. The messiest path — an OTC interim, a scramble to establish a Hong Kong listing, or a broker-dependent conversion. This is the exposure to watch.

Where a Hong Kong line also qualifies for Southbound trading it draws on mainland liquidity too; for why an eligible Hong Kong listing lowers delisting exposure in the first place, see Southbound Stock Connect explained.

The conversion path, in practice

If you hold the US ADR of a company that also trades in Hong Kong, the route from ADR to Hong Kong ordinary shares looks like this:

• The depositary bank is the hinge. A conversion is that bank cancelling your ADRs and releasing the corresponding Hong Kong shares to your broker.
• You need Hong Kong market access. Your account has to be able to hold and trade HKEX-listed shares — the first thing to confirm with your broker.
• Timeline: on the order of a couple of business days. A conversion is a settlement process, not an instant swap.
• Fees and the share ratio apply. Expect a per-share ADR cancellation fee, Hong Kong stamp duty and market charges, and possibly a broker fee; one ADR often represents several (or a fraction of) Hong Kong shares.

Frequently asked questions

Sources

External figures cited above: U.S.-China Economic and Security Review Commission, "Chinese Companies Listed on Major U.S. Stock Exchanges" (March 2025) — the 286-company / ~US$1.1 trillion figures (as of 7 March 2025); White & Case, "The HFCAA and consequences for US-listed China-based companies" and China Briefing, "US Delisting Risks Drive Chinese Companies to Hong Kong" — on the February 2025 policy revival and Hong Kong dual-listing as the best-protected structure. The Hong Kong-line table is derived from the WealthyTec universe dataset. Listing-status and delisting-event data on this site trace to public filings via the delisting watch; verify current details before acting.