Coinbase (COIN) opened stock and exchange-traded fund (ETF) trading to all U.S. customers, expanding beyond digital assets as part of its plan to become an “everything exchange.”

The roll-out allows users to buy and sell U.S.-listed stocks and ETFs on the same platform they use for crypto. Trading runs 24 hours a day, five days a week, with no commission. Customers can fund trades with U.S. dollars or USDC and buy fractional shares starting at $1.

Coinbase outlined the expansion in December, when it said it intended to bring multiple asset classes under one roof. Earlier this month, it debuted a predictions market, enabling users to trade on the outcomes of real-world events. Stock trading marks another step in that strategy.

The move…