Charles Schwab will begin piloting 24-hour weekday trading for clients using its thinkorswim trading platform, opening expanded access to stocks in the S&P 500, the Nasdaq-100 and hundreds of exchange-traded funds, the company said in a press release.

The move comes less than a week after the New York Stock Exchange announced plans to shift to 22-hour trading days for the U.S.-listed stocks, ETFs and closed-end funds on its Arca platform.

Until now, the Schwab thinkorswim offering, absorbed as part of the TD Ameritrade acquisition in 2020, included just two dozen ETFs.

“Our expansion in overnight trading combined with our steady stream of meaningful platform enhancements demonstrates our overall commitment to keeping our foot on the pedal and continually innovating to meet traders’ rapidly evolving needs,” said James Kostulias, managing director and head of trading services at Schwab, in the release. “That has always been part of our firm’s DNA.”

Alongside Schwab, Fidelity and Pershing make up the three largest custodians in the registered investment advisory space. Neither Fidelity nor Pershing immediately responded to inquiries about whether they would be following suit with 24/5 trading.

The new Schwab trading hours will begin with a small group of clients, with most clients having 24-hour trading access five days a week in 2025, the release said.

“Our goal has always been to offer and expand access to 24/5 trading in a responsible way that takes into account client demand, the evolving dynamics of the overnight trading market, and—importantly—providing clients with the full library of Schwab’s educational content and 24-hour support to help them balance the opportunities and risks, as well as the unique considerations of overnight trading,” Kostulias said.