Investors eager to trade around the clock are getting more choices.

Charles Schwab ( SCHW ) on Wednesday announced the broad availability of trading 24 hours a day, five days a week, saying in a press release that its retail clients will have extended trading access for stocks in the S&P 500 and Nasdaq 100, as well as a range of exchange-traded funds.

The company had already offered pilot versions of the service starting last year. On Wednesday, it said that activity was busiest between 8-9 p.m. ET, and 3- 4 a.m. ET, with the most-traded stocks by volume including big tech names like Tesla ( TSLA ), Nvidia ( NVDA ), Palantir ( PLTR ), MicroStrategy ( MSTR )—which recently rebranded as Strategy —and Advanced Micro Devices ( AMD ).

“Trading behavior more or less mirrored what we typically see during standard market hours,” said James Kostulias, Schwab’s head of trading services, of the pilot period. “Traders appear to follow the same fundamental principles that define their activities during the standard trading day.”

A range of other companies , including Robinhood ( HOOD ) and Intercontinental Exchange ( ICE ), have been moving toward extended trading hours that go beyond both the regular session, during which volumes are highest, and the traditional premarket and after-hours sessions.

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