Core Insights - Tether's USDT has reached an all-time high in circulating supply, with a market capitalization of $187.3 billion in Q4 2025, despite bearish conditions in the broader crypto market following a liquidation season in October [1][2] - The average number of monthly active USDT wallets increased to 24.8 million, representing 70% of all wallets holding stablecoins, while quarterly transfer volume surged to $4.4 trillion [4] - USDT is at risk of unpegging from its $1 value, recently dropping to $0.9980, which is its weakest peg in over five years, raising concerns among analysts about a potential full untethering [5] Market Dynamics - The competitive landscape for stablecoins has not significantly affected Tether, as it continues to maintain its dominance despite the emergence of new stablecoins [2] - Circle's USDC, the second-largest stablecoin, experienced fluctuations but closed the quarter largely unchanged, while Ethena's USDe saw a significant 57% drawdown [3] - Tether's total reserves increased to $192.9 billion by the end of Q4 2025, a notable rise from $11.7 billion in the previous quarter, with net equity recorded at approximately $6.3 billion [4] Regulatory Developments - In Q4 2025, USDT was officially recognized as an Accepted Fiat-Referenced Token (AFRT) by the Abu Dhabi Global Market (ADGM), allowing its use across multiple blockchains [6]