USDT controls 59.6% of $308.2B stablecoin supply across 130 chains, but liquidity is fragmenting into isolated pools. New tokens start separate pockets, not competitive books.
The stablecoin market is splitting along chain-specific fault lines, creating liquidity pools that are deep where USDT trades and thin almost everywhere else.
Data from DeFiLlama puts total stablecoin capitalization near $308.2 billion. USDT alone accounts for roughly 59.6% of that supply, a share that reflects its presence on 130 blockchain networks, most exchange pairs, and every major settlement rail. The scale is a moat. A new token launching on a single chain does not compete for the same liquidity – it starts a separate pool.
Tether's expansion across so many chains has made the stablecoin market more accessible but also more fragmented. A billion dollars of USDT on Ethereum trades with tight spreads and deep books. The same amount on a smaller chain may sit in a liquidity pocket that is hard to exit without moving the price. Circulating supply on the network matters less than where the market makers are.
USDC tells a similar story from a different angle. Circle's stablecoin accounted for roughly 12.5% of total crypto trading volume in the second quarter of 2026, according to DeFiLlama, even as its circulating supply fell to nearly $73.5 billion. Volume concentration is holding up better than supply concentration. The difference is distribution – USDC is plugged into payment rails, exchange settlement layers, and the institutional custody systems that generate turnover.
New stablecoin entrants are targeting narrower niches. They focus on specific chains, payment apps, or financial use cases where they can offer unique features, regulatory advantages, or specialized functions. But a token does not create its own demand. Without users, market makers, and existing exchange connections, supply is just a number on a dashboard. The dominant tokens already have those connections.
The infrastructure side is tightening further. Visa's stablecoin initiatives and partnerships involving Mastercard, Stripe, BlackRock, and Coinbase are pushing digital dollar rails deeper into existing financial plumbing. For most businesses that want to accept or settle in stablecoins, the path of least resistance remains USDT or USDC. The tokens that win on distribution keep winning on liquidity.
The fragmentation is not going away. But it is not symmetrical either. One pool gets deeper; the other pools stay shallow.
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