Uniswap Labs released the L2 Swap trading volume data on X platform for January this year: Arbitrum's trading volume was $9.29 billion, an increase of about 785% year-on-year; Polygon's trading volume was $1.99 billion, a year-on-year increase of about 74.56%; Optimism's trading volume was $1.36 billion, a year-on-year increase of approximately 130.5%.