Crafting an Announcement to Explain Abnormal Share Price Movements Post-Listing

The frequency of abnormal share price or trading volume movements (“volatility events”) among newly listed companies on the Hong Kong Stock Exchange (HKEX) has intensified in the 2024-2025 financial year, creating a critical compliance bottleneck for issuers and their boards. According to data compiled by the HKEX from its daily disclosure reports, the number of “Price and Volume Inquiries” issued to newly listed companies (within 12 months of listing) increased by 17.3% year-on-year in Q1 2025 compared to Q1 2024. This surge is not merely a statistical anomaly; it reflects a structural shift in market dynamics driven by concentrated retail participation in small-to-mid-cap IPOs and the proliferation of algorithmic trading. For a listed company, the 24 to 48 hours following a volatility event are a minefield of regulatory obligations under the HKEX Listing Rules and the SFC Code on Conduct. A poorly drafted or delayed announcement explaining the movement can trigger a trading suspension, a formal SFC investigation under Section 179 of the Securities and Futures Ordinance (Cap. 571), or a class-action lawsuit. This article dissects the regulatory mechanics of crafting a compliant “announcement to explain” under Main Board Rule 13.10 and GEM Rule 17.11, providing a structured framework for directors, company secretaries, and their legal counsel to navigate these high-stakes communications.

The Regulatory Trigger: When and Why an Announcement is Mandatory

The Definition of “Abnormal” Under HKEX Rules

The obligation to publish an announcement arises not from the movement itself, but from the HKEX’s inquiry. Listing Rule 13.10(1) (Main Board) and GEM Rule 17.11(1) state that an issuer must, upon request by the Exchange, “announce any information necessary to avoid a false market in its securities or to enable the public to properly appraise the position of the issuer.” The Exchange typically issues an inquiry when a stock’s price or volume moves by more than 20% in a single trading day, or by a cumulative 30% over three trading days, relative to the market or sector index. However, the threshold is not mechanical; the Exchange also considers the context of the company’s recent listing, its market capitalisation, and the liquidity of its shares.

A critical nuance for post-listing companies: the HKEX Guidance Letter HKEX-GL86-16 (updated January 2024) clarifies that a newly listed entity (within the first 12 months) is subject to enhanced scrutiny. The Exchange presumes that any significant price movement in the first 90 days of listing is “abnormal” unless the issuer can demonstrate otherwise. This presumption shifts the burden of proof onto the issuer to proactively assess whether an announcement is needed, even before receiving a formal inquiry.

The “Inside Information” Overlay

The obligation under Rule 13.10 is compounded by the statutory duty under Part XIVA of the Securities and Futures Ordinance (SFO). Section 307B of the SFO requires a listed corporation to disclose “inside information” as soon as reasonably practicable. A significant share price movement is itself a strong indicator that inside information may have been leaked or is being traded upon. The SFC’s “Guidelines on Disclosure of Inside Information” (June 2012, revised 2023) explicitly state that a price movement “may be a signal that information has entered the market.” Therefore, an issuer cannot simply state “we are not aware of any reason for the movement.” It must conduct a reasonable inquiry into the existence of any inside information, including potential corporate actions, financial results, or changes in business operations. The announcement must either (a) disclose that information, or (b) confirm that after due inquiry, no inside information exists.

The 24-Hour Window

The operational timeline is tight. HKEX Listing Decision HKEX-LD100-2023 (a recent decision on price inquiry compliance) reinforced that an issuer must respond to a HKEX inquiry within 24 hours, or by the start of the next trading day, whichever is earlier. Failure to do so results in an automatic trading halt under Rule 6.05. This 24-hour window is non-negotiable. It forces the board, the company secretary, and the sponsor (if still engaged under a post-listing mandate) to convene an emergency meeting, conduct a factual investigation, and draft an announcement that satisfies both the Exchange and the SFO’s disclosure standard.

Anatomy of a Compliant Announcement: Structure and Content

The “No Inside Information” Template: A Double-Edged Sword

The most common response to a price inquiry is a “negative confirmation” announcement. The standard template, often found in HKEX’s “Guidance on Price Sensitive Information” (Annex A), states: “The board of directors of [Company] is not aware of any reasons for the [price/volume] movements. The board confirms that there is no inside information which needs to be disclosed under Part XIVA of the SFO.”

While this template is a starting point, it is a dangerous one if used mechanically. The SFC’s enforcement action against China Metal Recycling Holdings Limited (2015) serves as a cautionary precedent. The company issued a “no inside information” announcement after a price drop, only for the SFC to later discover that the company’s financial statements were materially misstated. The court found the announcement to be misleading, as the board had not conducted a “reasonable inquiry” into the underlying financial irregularities. To avoid this trap, a compliant announcement must include:

• A detailed scope of inquiry: Explicitly state that the board has consulted with management, the company secretary, the sponsor (if applicable), and major shareholders.
• A list of excluded matters: Specifically deny the existence of any pending corporate actions (e.g., merger, acquisition, disposal, change in control, dividend, or capital restructuring). This is not merely a boilerplate; it is a factual representation that the Exchange will scrutinise.
• A timestamp: The announcement should reference the exact time and date of the board meeting or the inquiry conducted.

Disclosing the Underlying Reason: When You Know the Cause

If the board identifies a reason for the movement—for example, a positive analyst report, a media article, a change in the company’s business outlook, or a shareholder transaction—the announcement must disclose that reason with specificity. Listing Rule 2.13 requires that announcements “contain sufficient detail to enable a recipient to understand the nature of the information.” A vague statement like “the company is aware of market speculation regarding a potential acquisition” is insufficient. The announcement must state:

• The nature of the speculation.
• Whether the speculation is accurate, inaccurate, or unconfirmed.
• If unconfirmed, the steps the company is taking to verify the information.

A practical example: If a price increase is triggered by a third-party research report, the announcement should name the report, the analyst, and state whether the company has reviewed the report’s conclusions. If the company believes the report is inaccurate, it must say so and, if necessary, provide corrective information to prevent a false market under Rule 6.10.

The “Trading Halt” Alternative

In some cases, the most prudent course is to request a trading halt under Rule 6.05 before publishing any explanation. This is advisable when:

• The board cannot complete its inquiry within 24 hours.
• The price movement is so extreme (e.g., >50% in one day) that any announcement would be insufficient to prevent a false market.
• The board suspects that inside information exists but is not yet ready to disclose it (e.g., a potential merger negotiation is at a sensitive stage).

A trading halt buys the board 24 to 48 hours to prepare a comprehensive announcement. The halt must be requested before the market opens or, if after market open, immediately upon discovery of the issue. The announcement to resume trading must then include the full explanation or a statement that the inside information has been disclosed. Rule 6.07 requires that the resumption announcement be “clear and unambiguous.”

Practical Pitfalls and Enforcement Trends

The “No Comment” Trap

A common error among newly listed companies is to issue a “no comment” or “we have no further information” announcement. This is a direct violation of Rule 13.10. The Exchange requires a definitive statement—either “we are not aware” or “we are aware and the reason is X.” A “no comment” response is treated as a failure to comply, leading to a trading suspension and a potential referral to the SFC for disciplinary action.

The Role of the Sponsor in Post-Listing Volatility

For companies within the first 12 months of listing, the sponsor remains on the record as a “sponsor for the listing” and is expected to assist with compliance matters, including price inquiry responses. The SFC’s “Code of Conduct for Persons Licensed by or Registered with the Securities and Futures Commission” (Chapter 17, paragraph 17.6) states that a sponsor must “take reasonable steps to ensure that the issuer’s directors understand their obligations under the Listing Rules.” This includes advising on the content of price-sensitive announcements. Failure to do so can result in the sponsor being censured, as seen in the SFC’s disciplinary action against a sponsor in 2022 (SFC press release, 15 June 2022) for inadequate post-listing compliance oversight.

Media and Social Media Amplification

The HKEX and SFC are increasingly monitoring social media and online forums for false or misleading information that drives price movements. SFC Circular to licensed corporations, 23 March 2024 specifically addressed the risk of “pump-and-dump” schemes on social media platforms targeting newly listed stocks. If a price movement is linked to a social media post, the announcement must address the post directly. The board should consider issuing a “clarification announcement” under Rule 2.13(2) to correct any misinformation, even if a formal inquiry has not been received. Proactive clarification is a defense against a subsequent finding of a false market.

The “Material Adverse Change” Trap

A price decline in the first year after listing is often attributed to a “material adverse change” (MAC) in the company’s business. However, a MAC is a specific legal concept under the Listing Agreement (Appendix 5) . An announcement that simply states “the company’s business is performing in line with expectations” may be insufficient if the price drop is severe. The board must assess whether the price movement reflects a genuine deterioration in fundamentals, or market sentiment. If the former, the announcement must disclose the change in performance, referencing the profit forecast or projection (if any) included in the prospectus. Listing Rule 11.19 requires that any departure from a profit forecast be announced immediately. Failure to do so exposes the company to claims of misrepresentation.

Actionable Takeaways

1. Implement a 24/7 price monitoring system: Designate a compliance officer or the company secretary to monitor the company’s share price and trading volume against a pre-set threshold (e.g., 15% movement) for the first 12 months post-listing, and to immediately convene a board meeting upon a breach.
2. Pre-draft a “negative confirmation” template: Work with your sponsor and legal counsel to create a compliant announcement template that includes a detailed scope of inquiry and a list of excluded matters, ready for rapid deployment within the 24-hour window.
3. Conduct a quarterly “inside information” audit: The board should formally document, on a quarterly basis, a list of all potential inside information items (e.g., pending contracts, litigation, financial results) to ensure that any price inquiry can be answered without delay.
4. Never issue a “no comment” or “no further information” statement: This is a direct violation of HKEX Listing Rules 13.10 and 17.11. Always provide a definitive “aware” or “not aware” statement, with supporting detail.
5. Proactively clarify false media or social media reports: If a price movement is linked to an external report, issue a clarification announcement under Rule 2.13(2) immediately, even without a formal inquiry, to prevent a false market and mitigate SFC enforcement risk.