Circle’s USDC added roughly $1.5 billion to $2 billion in market capitalization over seven days, the largest gain among major stablecoins during that period. Its circulation reached approximately $72.7 billion to $73.7 billion by mid-August 2026, representing about 24% of the $303 billion stablecoin market tracked by DeFiLlama. With the broader market expanding by about $2.2 billion, USDC accounted for between two-thirds and nearly all of the new capital flowing into dollar-pegged tokens. USDC remains the second-largest stablecoin behind Tether’s USDT. Circle publishes regular reserve attestations, while the company says it plans to launch the Arc blockchain mainnet in September 2026. The growth may reflect both new money entering crypto and capital rotating among stablecoins, with USDC’s reserve transparency and backing by short-term US Treasuries and cash equivalents appealing to hedge funds and corporate treasury departments. Circle Internet Group, traded under CRCL, has a market capitalization of roughly $21 billion to $24 billion. Because Circle earns yield on assets backing USDC, a $2 billion weekly increase in supply adds corresponding yield-bearing assets to its balance sheet, although the company’s valuation already reflects expectations for continued growth and leaves limited room for a contraction in supply.