USDC Captured 79% of Stablecoin On-Chain Volume in Q3

Crypto Economy and U.Today reported that Circle’s USDC handled 79% of total stablecoin transaction volume in the third quarter of 2026. Both outlets put the corresponding on-chain activity at $13.9 trillion, illustrating the scale of stablecoin transfers amid increased use of blockchain-based payments and markets. Crypto Economy provided additional operating figures, reporting that average daily issuance and redemption activity reached $2.3 billion. Minting and redemptions totaled $208 billion for the quarter. The outlet also linked Circle’s ecosystem expansion to the launch of Arc Mainnet, while U.Today concentrated on USDC’s dominant transaction share and the sharp increase in on-chain stablecoin activity. The two sources corroborate the report’s principal figures without conflict: both identify Q3 2026 as the measurement period, both cite 79% for USDC’s transaction-volume share and both cite $13.9 trillion in on-chain volume. Their main difference is emphasis, with Crypto Economy supplying issuance, redemption and Arc Mainnet details that were not included in the U.Today summary. Circle’s broader role is also reflected in current supply and valuation data. DeFiLlama lists USDC’s circulating supply at $71.12 billion, while live market data places its market capitalization at $70.87 billion. These figures show that the token supporting most reported stablecoin transaction volume also has one of the sector’s largest circulating bases. USDC was trading at $0.999677, up 0.01% over both 24 hours and seven days. The wider crypto market capitalization stood at $2.75 trillion and was broadly higher, with Bitcoin up 3.10% over 24 hours; however, the Fear and Greed index remained at 34, or Fear. The combination of rising market activity and cautious sentiment provides the context in which USDC’s transaction dominance was recorded. Future disclosures on issuance and redemption levels and adoption associated with Arc Mainnet would offer further indicators of the expansion described in the report.