# Arbitrum extends lead over Optimism as Uniswap posts record volume on L2
“# Arbitrum extends lead over Optimism as Uniswap posts record volume on L2 ” The world’s most popular decentralized exchange, Uniswap, is seeing layer two volumes surge as Ethereum transaction fees surge once again. On Oct. 19, Uniswap founder Hayden Adams tweeted that daily volume across v3 deployments of the decentralized exchange on layer-two networks…