CMC Markets has launched 24-hour US stock trading, five days a week, for UK customers using CMC Invest, combining extended market access with fractional investing.
The new service allows CMC Invest customers to trade eligible US shares during extended and overnight sessions, giving investors the ability to respond to company earnings, breaking news and other market-moving events outside normal US market hours.
This combines CMC Markets’ extended-hours trading with CMC’s fractional share trading, two areas the broker has been expanding this year.
Fractional investing enables investors to buy part of a share rather than having to purchase a whole one, making high-priced US stocks more accessible to smaller investors. CMC says fractional shares support all available order types, including market orders, during extended and overnight trading sessions.
Investing through CMC Invest remains available at 0% commission, although other charges may apply.
CMC says the launch forms part of a broader strategy to bring its trading and investing businesses closer together and create a more connected multi-asset offering.
Lachlan Rourke-Davies, Senior Product Manager at CMC Markets, said:
“Bringing 24/5 trading and fractional investing together gives investors the freedom to respond when markets move and invest the amount that works for them.
“It’s a major step forward for CMC and another example of how we’re building a more flexible, modern investing experience.”
Laurence Booth, Global Head of Markets at CMC Markets, said the company’s ambition was to give customers more control over when and how they access financial markets.
He added: “US markets don’t stop moving when the core session closes, and now our clients don’t have to either.”
With US markets accounting for some of the world’s most actively traded companies, the extended-hours rollout gives CMC clients greater flexibility to manage positions and respond to breaking news whenever markets are moving, rather than being restricted to the traditional New York trading session.
The expansion also builds on CMC Markets’ recent push into wealth management and investing. Earlier this month, the broker introduced fractional investing, allowing customers to buy portions of US shares and ETFs across Stocks & Shares ISAs, SIPPs and General Investment Accounts, as it continues to integrate its CMC Invest services more closely with its trading platform.

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