Stablecoins Reach $321B Market Cap as $1B Inflows Lift Sector to New High

Following a week marked by an absence of both inflows and outflows, the stablecoin economy recorded $1.08 billion in inflows from April 26 through May 3. Data further indicates that, as of Sunday, the sector’s total market valuation stands at $321.759 billion, based on figures logged by defillama.com.

Key Takeaways:

• Stablecoin market hits $321.759B after $1.08B inflows, signaling continued sector expansion.
• Tether ( USDT) holds 58.90% share near $200B, while Circle’s USDC grows 0.61% to $78.296B.
• Sky’s USDS jumps 6.08% as capital rotates, suggesting shifting preferences may reshape rankings.

Stablecoins Add $1B in Inflows as Market Cap Climbs

Defillama.com stats show the sector has reached yet another all-time high this year, climbing to $321.759 billion as the market posted a 0.34% gain over the past seven days, bolstered by $1.08 billion in inflows.

Within that total, Tether’s USDT holds a dominant 58.90% share, carrying a valuation of $189.525 billion. The world’s leading stablecoin now stands just $10.475 billion shy of the unmet milestone of $200 billion. Still, USDT posted a seven-day decline of 0.14%, shedding more than $271 million over the course of the week.

Image source: Defillama.com on May 3. Trailing behind, Circle’s USDC has moved in the opposite direction, advancing 0.61% during the same period and lifting its market capitalization to $78.296 billion. As a result, USDC now accounts for 24.33% of the sector’s total valuation.

The third-largest stablecoin, Sky’s USDS, has posted notable gains, climbing 6.08% over the past seven days to reach a market capitalization of $8.776 billion. Since April 26, USDS has expanded by more than $503 million, reflecting steady upward movement.

By contrast, Sky’s older stablecoin, DAI, holds the fourth position and has edged lower, slipping 1.02% over the week to a market cap of $4.619 billion. Rounding out the top five, World Liberty Financial’s USD1 stablecoin advanced 3.18% over the seven-day stretch, bringing its market capitalization to $4.531 billion.

That 3.18% increase translated into more than $139 million in inflows for USD1. Among the remaining five contenders in the top ten, two registered outflows, as Paypal’s PYUSD declined 1.78%, shedding just over $61 million, while Circle’s USYC dropped 10.93% with more than $317 million exiting.

Taken together, the week’s movements reflect a sector still expanding but increasingly defined by internal rotation rather than uniform growth. Capital appears to be shifting between issuers as participants refine preferences around liquidity, yield, and trust.

If this pattern continues, the competitive hierarchy could evolve further, with newer entrants and established players alike contending for share in a market that remains structurally significant.