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Hong Kong’s Trading Hours Under Scrutiny After South Korea’s Extension

By Drooid · · How we work

Extended Trading Hours in South Korea Prompt Hong Kong Review

South Korea’s primary exchange, the Korea Exchange, recently added a real-time after-market session that runs from 4 p.m. to 8 p.m., extending the total weekday trading window to ten and a half hours. The move follows similar ambitions announced by Nasdaq and the London Stock Exchange to approach near-24-hour trading. An industry participant in Hong Kong has said the development puts fresh pressure on local regulators to accelerate a review of the city’s own trading schedule.

Current Trading Schedules and Recent Changes

Hong Kong’s main market currently operates for five and a half hours each weekday, from 9:30 a.m. to 4 p.m., with a one-hour lunch break. By contrast, the Korea Exchange’s new structure more than doubles that duration. The extension represents a notable shift in regional market practices, as other major bourses explore longer or continuous trading windows.

Industry Reaction in Hong Kong

The unnamed industry source argues that Hong Kong’s relatively short session may disadvantage local issuers and investors when competing with markets that offer extended or after-hours trading. The comment reflects broader concerns among market participants that the city’s trading framework could appear less attractive to global capital flows if it remains unchanged.

Potential Implications for Market Competitiveness

If Hong Kong were to lengthen its trading day, it could align more closely with the operating hours of neighboring exchanges, potentially improving liquidity and enabling more timely price discovery for cross-border investors. Conversely, extending hours would require adjustments to market infrastructure, clearing processes, and participant staffing, all of which could entail significant operational costs.

Data Snapshot

  • Korea Exchange regular session: 9 a.m.–3:30 p.m. (6.5 hours)
  • Korea Exchange after-market: 4 p.m.–8 p.m. (4 hours)
  • Total Korea Exchange weekday trading: 10.5 hours
  • Hong Kong market weekday trading: 9:30 a.m.–4 p.m. (5.5 hours, plus 1-hour lunch break)

The discussion remains ongoing, with Hong Kong’s regulators expected to consider the industry’s call for a faster review of trading-hour policies.