Circle's USDC stablecoin experienced a $2 billion increase in circulation over the past week, reaching approximately $72.5 billion. This surge, noted from September 4, 2025, underscores growing institutional demand and USDC's expanding role in digital finance. Key figures in this development include Circle's Co-founder and CEO, Jeremy Allaire, and Chief Strategy Officer Dante Disparte. The increase in USDC circulation is impacting DeFi protocols and financial markets by enhancing liquidity and trading efficiency. This growth highlights USDC's importance as a stablecoin collateral in Ethereum-based DeFi protocols, aligning with regulatory compliance and market transparency. The expansion is attributed to broader market adoption and strategic adjustments by financial institutions utilizing stablecoins.