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The stablecoin sector continues its relentless expansion, and the numbers as of mid-May 2026 tell a story of sustained capital inflows into dollar-pegged crypto assets .

The total market capitalization has climbed to approximately $324.8 billion, with multiple data sources confirming figures between $322.7 billion and $324.8 billion depending on the tracking methodology . Just over a week ago the sector had added more than $2 billion in net capital, and the weekly inflows have remained positive since .

Here is how the largest stablecoins currently rank.

Tether's USDT still dominates at $189.6 billion, commanding roughly 58.7% of the total market. It remains the liquidity backbone of crypto trading pairs across practically every major exchange .

Circle's USDC has been the standout in recent weekly flows. It now sits at approximately $79 billion after absorbing around $1.6 billion in new inflows between early and mid-May, signaling that the market continues to trust fully regulated, U.S.-domiciled issuers alongside the established leader .

Sky's USDS holds third at $7.88 billion despite a weekly decline, while Sky's DAI remains in fourth at roughly $4.66 billion . World Liberty Financial's USD1 and Ethena's yield-bearing USDe round out the mid-tier, with USDe at approximately $3.96 billion and showing a reversal of previous outflow pressure . PayPal's PYUSD completes the top group at $3.41 billion .

On the blockchain distribution side, Ethereum remains the dominant settlement layer with roughly $167.76 billion in stablecoin supply, followed by TRON at $87.29 billion and Solana at $14.31 billion .

The broader context here is that stablecoins are no longer just trading liquidity. They are becoming financial infrastructure. The IMF published its 2026 Stablecoin Shock Report recently, the ECB flagged concerns about euro-denominated lag, and behaviorally stablecoin payments are starting to look more like debit card transactions than speculative crypto flows . When the market adds billions in a single week during a period of sideways BTC price action, it suggests these inflows are structural rather than purely speculative.

For anyone trading on Gate, stablecoin liquidity directly impacts order book depth, funding rates on perpetuals, and the ease of rotating between positions. A growing stablecoin pie generally means more dry powder sitting on the sidelines, ready to move when conviction returns.

Which stablecoin are you primarily holding right now, and has the GENIUS Act changed how you think about reserve transparency when choosing between USDT, USDC, or the newer entrants?

This post is for informational purposes only and does not constitute financial advice.

#Stablecoins #USDT #USDC #CryptoMarkets
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