According to Paolo Ardoino, Tether's CEO, the circulating supply of USDT has reached $155 billion as of June 9, 2025 (source: @paoloardoino on Twitter). This marks a new all-time high for the stablecoin, indicating robust demand and increased liquidity across major crypto exchanges. For traders, the expansion of USDT supply often reflects heightened market activity and deeper trading pairs, potentially reducing slippage and tightening spreads. The milestone also underscores Tether’s dominance in stablecoin trading volume, which can impact Bitcoin, Ethereum, and altcoin liquidity, making it critical for crypto market participants to track USDT’s growth for informed trading strategies.