Stablecoin supply hits $315B in Q1 as USDC rises, USDT falls

Stablecoin market data from CEX.IO shows total stablecoin supply rose about $8B to a record $315B in Q1 2026, even as broader crypto markets contracted. The shift is driven by stablecoin issuer divergence: Circle’s USDC gained market share while Tether’s USDT posted its first net quarterly supply decline since Q2 2022. USDT supply fell by roughly $3B in Q1 2026. The article links the drop to two structural headwinds: weaker retail stablecoin transfers (CEX.IO data cited a 16% decline in retail-sized transfers) and tighter regulatory access, including EU Markets in Crypto-Assets (MiCA) constraints that reduce distribution through EU-regulated venues. The piece also notes ongoing institutional concerns about Tether reserve transparency. Meanwhile, USDC circulating supply reached about $78B by Q1 close, up around 220% since Q4 2023. Growth is concentrated on Ethereum and Solana, where USDC is used heavily in DeFi settlement, on-chain trading, and B2B payments. The article describes transaction behavior consistent with programmatic usage (average transfer around $557 and high velocity). Overall, stablecoin dominance is reinforced by the quarter’s record liquidity: stablecoins are said to represent 75% of total crypto trading volume and $28T in total stablecoin transaction volume. For traders, this suggests stablecoin liquidity is strengthening, with relative preference moving toward USDC as compliance expectations intensify. Keywords: stablecoin, USDC, USDT, liquidity, regulation.