Spark and Uniswap launch FX Layer, a stablecoin swap pool on Ethereum seeded with $150M in USDS, USDT, and PYUSD liquidity using concentrated liquidity.

Spark is establishing a "liquidity foundation" for the new pool by migrating $150 million from its USDS ecosystem to Uniswap v4.

The protocols are building shared liquidity and trading infrastructure for a future with hundreds of competing digital currencies on blockchain rails.