Stablecoin market tops $300 billion as USDT share rises to 60%

The global stablecoin market surpassed $300 billion in total capitalization in May 2026, marking a significant milestone for the digital asset sector. This growth, however, reflects a consolidation of liquidity rather than new capital inflows, with Tether's USDT gaining dominance as other major stablecoins contracted.

Tether added approximately $5 billion to its supply over the last month, raising its market share to nearly 60%. Meanwhile, competing assets like USD Coin (USDC), PayPal's PYUSD, and Ethena's synthetic dollar USDe saw a combined contraction of roughly $4.2 billion. This left the overall stablecoin market with net growth of just $900 million, or 0.3%. The dynamics indicate capital is rotating into USDT from other stablecoins, not entering the ecosystem anew.

The sharpest decline was seen in USDe, which fell 28% over the past month and approximately 34% year-to-date. Analysts attribute this to compressed funding rates in perpetual futures contracts, which weakened the yield mechanism supporting the synthetic dollar. PYUSD also struggled, dropping 13% in the same period.

This consolidation highlights two converging forces. First, a regulatory environment increasingly...