Coinbase's CUSHY fund brings institutional credit to tokenized stablecoins. Float economics look endangered.

Per Coinbase, stablecoin transaction volume crossed $33 trillion in 2025, with 89 million addresses holding stablecoins on any given day. Those numbers have one obvious implication: the stablecoin layer is now large enough to support institutional credit products sitting on top of it. CUSHY, launched this week by Coinbase Asset Management, is the first real attempt to build that layer at scale.

CUSHY is a tokenized credit fund for qualified investors. Coinbase Prime handles prime services. Northern Trust administers. Superstate's FundOS issues the tokenized shares on Base, Solana, and Ethereum.

The fund targets three buckets: public credit, private and opportunistic credit (higher yield, less liquid), and structural alpha, which combines credit positions with tokenization premiums and protocol incentives. That last bucket is the one that sounds like marketing but isn't: DeFi protocol rewards stacked on top of credit yield is a genuinely new structure that didn't exist in traditional credit funds.

The pressure this creates for Tether and Circle is structural, not existential, but it's real. Both issuers make their money on the float: they hold dollars in reserves, earn the yield on short-duration Treasuries, and pass none of it to stablecoin holders. That math works as long as nobody builds a product that returns yield to the institution holding stablecoins. CUSHY doesn't solve that for retail. But for a corporate treasury that parks $50 million in stablecoins for DeFi operations, a credit fund denominated in the same infrastructure competes for exactly that capital.

Think of it like the repo market buildout of the early 1990s: money that corporations parked in overnight deposits started flowing into repo agreements offering marginally better yield with the same liquidity profile. The banks didn't lose those deposits overnight, but the economics shifted and never fully shifted back. CUSHY is too new and too institutional to move that needle today. But it's exactly the kind of product that, five years from now, looks obvious.

Coinbase's edge is vertical integration. CBAM manages the fund. Coinbase Prime provides custody and trading. Base is the natural on-chain settlement layer.

Superstate supplies the FundOS rails. Northern Trust provides regulatory-grade fund administration, which is what the institutional buyer actually cares about. None of the pieces are unprecedented individually. Assembled this way, they are.