The Hong Kong stock market is exploring a potential shift in its trading schedule to bring it in line with most other major global exchanges, with a key proposal being the removal of its traditional midday break, according to sources with knowledge of the discussions.
Hong Kong Exchanges & Clearing Ltd. has communicated various potential plans to key brokers and trading firms in recent weeks, said the sources, who requested anonymity as the information is not yet public.
One of the options under consideration involves starting the trading day 30 minutes earlier at 9 a.m. and eliminating the one-hour lunch break that currently begins at noon, the sources indicated.
Hong Kong is one of the few significant financial markets, alongside mainland China and Tokyo, that still maintains a formal lunch break. The topic of trading hours has been a point of debate for years among the city's more than 500 brokerage firms, with previous attempts to extend the session prompting protests over a decade ago.
HKEX is also evaluating the possibility of introducing an evening trading session, potentially from 8 p.m. to midnight, to allow local investors to react to early market activity in the United States, the sources said. The standard market close would remain at 4 p.m. to facilitate clearing and settlement processes.
If implemented, this late session would likely be restricted to a select group of larger, more liquid stocks that attract greater investor interest, according to some of the people. The exchange aims to boost trading volumes for companies that also have American depository receipts listed overseas.
A related consideration is whether mainland China's markets would agree to extend trading hours for the more than 600 stocks eligible for the Southbound Stock Connect program, two sources noted.
As of 2025, approximately 23% of the total turnover on Hong Kong's equity market was driven by the Southbound Stock Connect, which provides a channel for mainland Chinese investors to trade Hong Kong-listed shares.
Initial feedback suggests some market participants are doubtful about the value of a proposed evening session, citing high trading costs in Hong Kong. Some investors may prefer to use U.S.-listed options for hedging purposes instead, according to several sources.
The exchange is still assessing multiple proposals, and the plans are subject to change, the people added. A broader consultation with market participants is expected later this year once the proposals are more developed.
In a statement, HKEX said it is "committed to continuously enhancing Hong Kong’s competitiveness" as an international financial center and is reviewing opportunities to improve market accessibility, including examining trading hours.
The exchange noted it regularly explores various ideas, but any enhancements to the cash equity market are at "a very early, exploratory stage." Any future changes would require a thorough assessment of market impact, stakeholder input, and coordination with linked markets like Stock Connect.
Hong Kong's Securities and Futures Commission stated it has held preliminary talks with the exchange "regarding the possible enhancements to trading hours to assess their impact, and remains committed to working closely with stakeholders."
Globally, traditional stock exchanges are moving towards longer trading hours, aiming for near-continuous operation. This trend is partly inspired by round-the-clock cryptocurrency markets and driven by plans from exchanges like Nasdaq to operate for 23 hours a day.
HKEX has already taken steps to increase market resilience, keeping its markets open during severe weather events since 2024 instead of closing for typhoons, which has bolstered its readiness for extended trading sessions.
Hong Kong's derivatives market for futures and options already operates well past midnight, with major contracts trading until 3 a.m. The exchange has previously proposed further extensions to trading hours.
"Our current focus in the first instance is on the proposed enhancement of derivatives market trading hours, which remains subject to further market engagement and regulatory approval," the exchange added.
Historical Context and Market Structure
Trading hours have historically been a contentious issue in Hong Kong. In 2011, the exchange extended hours by moving the morning session start from 10 a.m. to 9:30 a.m. and gradually reducing the lunch break from two hours to one.
This change was met with significant opposition at the time, with around 1,000 stockbrokers protesting in the streets against then-CEO Charles Li. They argued the shorter break harmed work-life balance and reduced client networking opportunities. Despite the protest, the reform was implemented and remains in effect.
Market concentration is high in Hong Kong. As of May, the top 65 brokerage firms accounted for nearly 97% of total market turnover, while 443 smaller firms shared the remaining 3.44%.
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