The aggregate stablecoin market cap now stands at $300 billion, with on-chain utility—not just trading demand—driving the bulk of new supply absorption.
Tether's USDT and Circle's USDC remain the dominant assets, providing deep liquidity across centralized exchanges and on-chain protocols. MakerDAO's DAI holds meaningful share as well, backed by a diversified collateral basket. The GENIUS Act, signed into law in 2025, established a federal regulatory framework for payment stablecoin issuers, giving the asset class a clearer compliance path.
Stablecoins are load-bearing infrastructure in DeFi lending. Aave and Compound both rely on USDT and USDC deposits to fund billions in outstanding loans, with depositors earning yield on the other side of that capital.
On the DEX side, Uniswap and Curve run stablecoin pairs as core routing infrastructure. Stable-to-stable and stablecoin-to-crypto pools keep slippage tight, which matters for on-chain arbitrage and any LP trying to manage inventory efficiently.
Bridge flows into Arbitrum, Optimism and other L2s tell a similar story. Capital migrates from Ethereum mainnet to access yield differentials and lower execution costs, with stablecoins functioning as the de facto settlement layer across that movement.
