Stablecoin Supply Sits $10B Below Its May Peak

Total stablecoin supply stood at $312.23 billion on Sunday, about $10 billion below the peak it set in May, according to figures compiled by CoinDesk Data and RWA.xyz. Most of that ground was lost in June, which took $7.7 billion out of the market, the largest monthly decline in dollar terms since the collapse of Terra-Luna in May 2022. The percentage comparison is far less dramatic: the present drawdown amounts to roughly 3%, against 26% in 2022. Both of the two dominant tokens are smaller than they were earlier in the year, with Tether's USDT down about $6 billion from its May level and Circle's USDC down nearly $7 billion from a March high.

The Measure: A Count of Tokens, Not a Market Price

Stablecoin supply is usually quoted as a market capitalization, but it behaves nothing like the market cap of a volatile asset. Each token is designed to be worth one dollar and to stay there, so the aggregate number is in practice a count of how many tokens exist. It cannot fall because prices fell. It falls only when holders hand tokens back to the issuer and take dollars out — a redemption — after which those tokens are destroyed, and it rises only when new dollars arrive and new tokens are minted. A $10 billion gap since May therefore describes net withdrawals of cash from the system rather than a repricing of anything, which is why the figure is watched as a rough gauge of how much spending power is staged on-chain and ready to be deployed.

The Components: USDT at $184.15B, USDC at $73.41B

USDT accounted for $184.15 billion of the July total, a 59% share of all stablecoins outstanding, down roughly $6 billion from about $190 billion in May. USDC stood at $73.41 billion on the RWA.xyz reading, with CoinDesk putting it at approximately $73 billion, a small discrepancy between the two datasets. That is close to $7 billion below the token's March 2026 peak of around $80 billion, a proportionally deeper decline than Tether's given the smaller base. Redemptions on this scale are settled out of the reserves that issuers hold against the tokens in circulation, which is the mechanical reason supply shrinks: the cash leaves the reserve and the corresponding tokens are retired.

The Other Direction: $1.78 Trillion of Adjusted Volume

Usage did not follow supply down. The same month that removed $7.7 billion from the outstanding stock saw $1.78 trillion of adjusted transfer volume, a measure that filters out duplicated and inorganic transactions to approximate genuine economic activity. The split within that total is the more striking detail. USDC accounted for $1.21 trillion of the volume and USDT for $573 billion, meaning the smaller token moved more than twice as much value as the one with nearly two and a half times its float. Stock and flow are separate series, and a shrinking stock that is turning over faster is a different condition from a market simply emptying out.

What Is Unresolved: Whether the Gap Closes From Here

Nothing in the July data indicates that supply had begun to rebuild. The market was smaller in mid-July than in May, smaller than in March by the USDC measure, and the contraction that produced most of the gap ran through a single month. Paul Howard, senior director at the trading firm Wincent, argued against reading too much into it, saying that "the recent decline in stablecoin market cap represents a relatively small pullback in what we believe is a long-term growth market." Whether that holds depends on something observable rather than interpretive: net minting has to resume for the aggregate to move back toward its May level, and until it does, the $10 billion is capital that has left the on-chain dollar system rather than capital rotating inside it.