The stablecoin market cap has reached $319.75 billion as of December 29, with Tether (USDT) leading at $199.08 billion and USD Coin (USDC) at $76.1 billion. Notably, PYUSD has seen a significant $810 million transfer between Ethena Labs and Copper Custody, indicating potential institutional interest. Despite these movements, the overall market remains stable with no major price fluctuations reported.