Coinbase claims crypto's only full-service prime brokerage crown

Coinbase Institutional head of strategy John D'Agostino says the exchange has crossed a threshold Wall Street would recognise immediately: it is now, by any traditional definition, the only full-service prime broker in crypto.

The checklist mirrors equities — trading, custody, financing, derivatives, cross-margining — with one crypto-native addition: staking. The final pillar, cross-margining between spot and derivatives, went live in March, cutting institutional capital requirements by 10–20%.

The numbers behind the claim are substantial. Coinbase Prime holds over $350 billion in assets under custody, roughly 12% of total crypto market cap, and acts as custodian for more than 80% of U.S. bitcoin and ether ETF assets. Quarterly trading volume runs around $236 billion across 470-plus assets on 20 blockchains.

D'Agostino draws a direct parallel to Goldman Sachs and Morgan Stanley in…