Stablecoin Liquidity 2026: Supply, Volume and DeFi

Last updated: September 30, 2026. According to DefiLlama, total stablecoin circulating supply was $313.2 billion. USDT was $183.8 billion (58.7%) and USDC was $74.5 billion (23.8%), together 82.5%. By chain, Ethereum held $147.7 billion, Tron $94.1 billion, BSC $17.4 billion, Solana $16.4 billion, and Hyperliquid L1 $7.45 billion. Mid-tier USD stablecoins were USDS $6.92 billion, USDe $4.90 billion, DAI $4.78 billion, USD1 $4.43 billion, USDG $3.09 billion, PYUSD $2.73 billion, and RLUSD $2.52 billion.

Key Takeaways

Total stablecoin circulating supply was $313.2 billion on September 30, 2026 (DefiLlama).
USDT was $183.8 billion (58.7%) and USDC was $74.5 billion (23.8%), together 82.5%.
Ethereum held $147.7 billion and Tron held $94.1 billion, the two deepest chains by stablecoin supply.
BSC held $17.4 billion and Solana held $16.4 billion. Hyperliquid L1 held $7.45 billion.
Mid-tier balances were USDS $6.92 billion, USDe $4.90 billion, DAI $4.78 billion, USD1 $4.43 billion, USDG $3.09 billion, PYUSD $2.73 billion, and RLUSD $2.52 billion.

What this supply cut measures

Stablecoin liquidity is not one number. Supply says how many units exist. Velocity says how often they move. Venue depth says whether a trader, a payroll file, or a DeFi pool can actually use them without moving the price. This update refreshes only the first of those, plus where that supply sits by chain, because that is what DefiLlama publishes as circulating supply. It does not restate transfer-volume or bot-adjusted figures from earlier editions of this report.

Circulating supply is a stock, not a flow. A chain can hold a large stock of stablecoins and still be a poor place to pay someone if the local pool is one issuer, one bridge, or one exchange wallet. Read the chain table as a map of where balances sit, then check the venue you actually use.

The September 30, 2026 cut puts total circulating supply at $313.2 billion. That is the figure to quote for "how big is the market" until the next refresh. Older peak and settle figures that used to lead this page have been removed so the article does not mix two as-of dates. Broader context is in our stablecoin statistics for 2026.

Dominance: USDT and USDC

USDT was $183.8 billion, or 58.7% of circulating supply. USDC was $74.5 billion, or 23.8%. Together they were 82.5%. Everyone else shares the remaining slice. For payments routing, that concentration still matters more than the long tail: if a corridor is deep, it is usually deep in one of those two.

Dominance is not the same as usefulness. USDT's lead is a supply lead. It does not, by itself, say whether adjusted economic transfers are larger than USDC's. This page no longer makes that volume claim. If you are choosing a rail for fees and speed rather than for headline supply, use the TRC20, ERC20, and Solana comparison alongside this supply cut.

Venue depth by chain

Ethereum held $147.7 billion of stablecoin supply. That is the deepest general-purpose pool in this snapshot and the chain most DeFi protocols still assume. Tron held $94.1 billion, almost all of it the USDT that retail transfers and exchange withdrawals already use. Those two chains are the depth story. Everything else is a specialist pool.

BSC held $17.4 billion and Solana held $16.4 billion. Both are large enough for serious retail and app flows, and both are an order of magnitude smaller than Ethereum or Tron. Hyperliquid L1 held $7.45 billion. Treat that last figure as exchange-adjacent inventory, not as a public payments rail. A treasury that needs collateral looks at Ethereum first. A payout flow that needs cheap transfers still has to look at where USDT actually sits, which in this cut is Tron.

Chain supply is not an order book. It does not tell you the bid-ask on a particular pair, the withdrawal delay at a particular exchange, or whether a bridge will have liquidity at the hour you need it. It does tell you which networks can absorb a large balance without being the entire market.

Mid-tier stablecoins

On the same day, USDS was $6.92 billion, USDe was $4.90 billion, DAI was $4.78 billion, USD1 was $4.43 billion, USDG was $3.09 billion, PYUSD was $2.73 billion, and RLUSD was $2.52 billion. Each is big enough to be the local unit of account in a product, a chain, or a broker relationship. None of them replaces USDT or USDC when the requirement is "accepted almost everywhere."

Mid-tier liquidity fails in a specific way. A token can show a multi-billion supply and still have wide spreads once you leave its home venue. Before you promise a contractor, a marketplace, or a fund that a mid-tier stablecoin is "liquid," check the chain and the venue, not the global supply line.

DeFi utilization, without a fake TVL number

This update does not publish a protocol-by-protocol DeFi total, because that would be a different dataset and a different as-of time. The utilization point that does follow from the supply cut is simpler. Ethereum held $147.7 billion, which is where lending markets and DEX inventory still concentrate. Tron held $94.1 billion, which behaves like a transfer ledger for USDT more than like a collateral base. If your question is "where can this balance be reused inside DeFi," start with Ethereum. If your question is "where can this balance move cheaply as a payment," do not assume the DeFi chain is the answer.

Utilization risk is then the usual stack: a smart-contract bug on the venue, an issuer freeze on the token, an oracle print on the collateral, or a bridge that cannot refill. Supply figures do not price those risks. They only tell you how much stock would be affected if a venue or an issuer had a bad day.

How to use the figure

Quote $313.2 billion as total circulating supply as of September 30, 2026, and name DefiLlama. Quote $183.8 billion and $74.5 billion when the question is USDT versus USDC. Quote $147.7 billion and $94.1 billion when the question is which chain is deep. Do not quote a monthly volume from this page. The previous volume discussion was removed rather than left stale.

Refresh this page when the supply ranking or the chain order changes, not on a calendar slogan. A move of a few billion inside USDT does not change the story. A change in which chain is second, or a mid-tier token entering the top few, does.

Conclusion

As of September 30, 2026, stablecoin circulating supply was $313.2 billion. USDT was $183.8 billion (58.7%) and USDC was $74.5 billion (23.8%). Ethereum held $147.7 billion and Tron held $94.1 billion. That is the liquidity map this report will stand on until the next sourced cut.

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This content is provided for informational and educational purposes only and does not constitute financial, investment, legal, or tax advice; no material herein should be interpreted as a recommendation, endorsement, or solicitation to buy or sell any financial instrument, and readers should conduct their own independent research or consult a qualified professional.