$USDC USDC (USD Coin) is rapidly expanding in 2025, with circulation growing over 78% year-over-year and a market cap around $61.5 billion, making it one of the largest stablecoins globally. Monthly transaction volumes hit $1 trillion in November 2024 alone, surpassing $18 trillion in all-time volume. USDC is widely accessible through over 500 million wallets and integrated with major payment networks like Visa and Mastercard, boosting its use in global commerce and finance.