The stablecoin market hit $321.759 billion on May 3, another all-time high. DefiLlama data shows $1.08 billion in net inflows over the past week, breaking a stretch of flat activity where neither inflows nor outflows moved the needle. The headline number looks straightforward. The breakdown underneath is not.
Tether still dominates but bled $271 million in a week
USDT holds 58.9% of the sector at $189.5 billion. It is $10.5 billion away from $200 billion, a number that seemed inevitable a month ago. But this week Tether posted a 0.14% decline, losing $271 million while the rest of the market grew. That is not a crisis. It is a signal.
The money went somewhere. USDC gained 0.61%, pushing to $78.3 billion. Sky’s USDS jumped 6.08%, adding over $503 million to reach $8.78 billion. That single-week USDS gain is larger than the entire market cap of most DeFi protocols. Meanwhile DAI, Sky’s older stablecoin, slipped 1.02% to $4.62 billion. Capital is rotating from legacy products to newer ones within the same issuer.
Top 5 Stablecoins by Market Cap (May 3, 2026)
| Stablecoin | Market Cap | Share | 7-Day Change |
|---|---|---|---|
| USDT (Tether) | $189.5B | 58.90% | -0.14% |
| USDC (Circle) | $78.3B | 24.33% | +0.61% |
| USDS (Sky) | $8.78B | 2.73% | +6.08% |
| DAI (Sky) | $4.62B | 1.44% | -1.02% |
| USD1 (WLFI) | $4.53B | 1.41% | +3.18% |
USD1 quietly climbed to fifth place
World Liberty Financial’s USD1 stablecoin gained 3.18% over the week, adding $139 million in inflows. It now sits at $4.53 billion, just below DAI. That puts a Trump-family-linked project in the top five stablecoin issuers by market cap. The stablecoin is growing even as WLFI’s governance token hits all-time lows.
PayPal’s PYUSD went the other direction, dropping 1.78% with $61 million in outflows. Circle’s yield-bearing USYC fell 10.93%, shedding over $317 million. Yield products are losing ground this week while plain dollar pegs are gaining.
Internal rotation, not uniform growth
The pattern here is clear. The sector is growing, but the growth is not evenly distributed. Capital is moving between issuers based on liquidity, yield expectations, and regulatory positioning. The CLARITY Act stablecoin yield compromise that cleared the Senate last week will reshape these dynamics further. The deal lets crypto firms offer stablecoin rewards while shielding bank yield products, drawing a line between who can offer what.
Meanwhile the USDT vs USDC competition continues to tighten. USDC has gained share for six consecutive weeks. Tether reported $1.04 billion in Q1 profit and an $8.23 billion reserve buffer, but the market is diversifying anyway. When the overall pie grows while your slice shrinks, it is the competitive signal that matters, not the profit report.
$321 billion. A year ago it was $160 billion. The sector doubled. The question now is not whether stablecoins matter. It is which ones survive the regulatory sorting that just started.
