Circle’s USDC Dominates Stablecoin Market With 79% Share of Transaction Volume
Circle's USDC accounted for 79% of stablecoin transaction volume in the third quarter of 2026, as total on-chain activity reached $13.9 trillion. The share shows USDC consolidating its position as the dominant stablecoin for on-chain settlement. Traders care because stablecoin volume is a proxy for real crypto liquidity and activity, and USDC's lead strengthens its role as the market's preferred settlement asset.