The London Stock Exchange is thinking about staying open long after the closing bell and possibly running right through the night. A study is underway to test whether the trading systems, rule-book, and staff could cope if the market never shuts. This potential shift to London Stock Exchange 24-hour trading reflects changing habits among small investors, global market pressures, and competitive forces from the New York Stock Exchange, Cboe Global Markets, and the Intercontinental Exchange.
How Extended Trading Hours Affect Retail Investors and Global Access
Many retail investors now use smartphone apps to buy and sell shares and contracts for differences at any hour. Across the Atlantic, exchanges are moving toward extended trading hours: NYSE Arca has asked the US Securities and Exchange Commission for a 22-hour trading day, while Cboe Global Markets wants to run its EDGX market 24 hours from Monday to Friday. Expanding London Stock Exchange trading hours could help the market compete globally while providing access to financial data and stock price information at all times.
The change also reflects globalization. Investors in Asia and the Middle East could trade during their own daylight hours instead of waiting for London to open. Adjusting London Stock Exchange hours and introducing extended-hours trading could make the market more accessible to international retail investors. Such a move may also have regulatory implications, requiring compliance with new regulatory requirements and oversight from relevant authorities.
Benefits and Risks of Extending London Stock Exchange Trading Hours
Round-the-clock trading could help multinationals that list shares on both sides of the Atlantic. Constant prices would narrow gaps between London shares and their matching U.S. receipts, while allowing companies to raise cash whenever news breaks. This may also encourage more public listings in the UK and increase trading activity, supporting financial data availability for investors.
But there is no guarantee traders will show up. In the U.S, where after-hours dealing has been available for years, night-time business still makes up only about 2% of daily volume. For smaller listed companies, especially those on AIM, thin liquidity could become an even bigger problem.
Unlisted firms could also feel the impact. Venture capital and private-equity investors often use public stock trading prices to set valuations, meaning extra overnight swings could influence funding rounds. On the upside, the FCA’s new PISCES sandbox may leverage the same technology required for all-night markets, supporting the London Stock Exchange’s 24-hour trading infrastructure.
Can London Stay Competitive?
London faces the risk of losing more companies to the New York Stock Exchange. Flutter Entertainment, the owner of Paddy Power and FanDuel, recently moved its main listing to Wall Street, saying it could reach more investors there. If that decision proves successful, other firms may follow.
Implementing extended trading hours also affects settlement and clearing. The UK is moving toward a one-day, or “T+1,” settlement cycle from October 2027. Expanding London Stock Exchange hours would require robust data and analytics, a reliable digital board, and careful management of regulatory issues and regulatory questions.
Will London Stock Exchange 24-Hour Trading Succeed?
Supporters say extending London Stock Exchange trading hours could make the city look modern again and stop more companies from crossing the Atlantic. Critics argue that while technology can open the doors at three in the morning, it can’t force investors to walk in.
Ultimately, the success of London Stock Exchange 24-hour trading will depend on real trading volume. If enough buyers and sellers take part, London could reclaim some lost ground. If not, the city may end up hosting the world’s quietest all-night market.
