Coinbase reported holding $331.9 billion worth of Bitcoin on its platform as of September 30, 2025, according to newly released figures. The total represents roughly 2.8 million BTC, giving the exchange custody over about 14% of the cryptocurrency’s circulating supply.

The sharp increase from the prior year’s $143.2 billion highlights accelerating institutional and retail engagement on the platform. Coinbase says its Assets on Platform metric reflects customer-held crypto and USDC balances, underscoring rising market activity ahead of anticipated regulatory and product