Stablecoin Supply Shrinks $7.7 Billion, But Transaction Volume Just Hit a Record $1.83 Trillion

Stablecoin market cap has fallen about 4.3% from its May peak of $322.4 billion to $308.5 billion, with June alone accounting for a $7.7 billion drop, the sharpest monthly decline since Terra's collapse in May 2022.

Tether's USDT slid from $189.54 billion on May 1 to roughly $184 billion by late July. Circle's USDC dropped from $77.27 billion to $72.41 billion over the same stretch. Compared with 2022's 26% market collapse, this contraction is modest, but it's still the biggest single-month drop in years.

The more interesting number sits on the other side of the ledger. Adjusted stablecoin transaction volume hit a record $1.83 trillion in June, 60% higher than May and more than double what it was a year earlier. Fewer dollars are parked, and the ones still in circulation are moving through payments, trading and settlement far faster than before.

Some of the missing supply has a clear destination: tokenized Treasury products, which pay yield that payment stablecoins legally can't. The GENIUS Act, signed in July 2025, bars issuers from paying interest directly on payment stablecoins, which pushes treasurers to park savings in tokenized funds and hold stablecoins only when they actually need to pay someone. That tokenized Treasury sector has grown to over $16 billion, up from about $11 billion in March, according to rwa.xyz.

Standard Chartered estimated in a March 2026 note that stablecoins now turn over roughly six times a month, about double the rate from two years ago. Visa data backs this up: a stablecoin dollar moves far more often than a dollar sitting in a conventional US bank account.

USDC has become the leading settlement asset despite carrying a smaller total supply than USDT. It processed about $1.21 trillion in adjusted volume in June versus $576 billion for USDT, suggesting the two stablecoins are increasingly being used for different jobs, USDC for settlement infrastructure, USDT for broader circulation.

Not every transfer is a real payment. Exchange transfers, automated activity and wash trading inflate the raw numbers. McKinsey and Artemis data cited by Forbes estimated identifiable real-world payments at about $390 billion in 2025, with $226 billion in business-to-business transactions and roughly $90 billion in payroll and remittances. That's still a small share of total volume, but it's expanded sharply over two years.

The takeaway: market cap used to be the headline number for stablecoins because issuers earn interest on reserves. Increasingly, transaction frequency is the number that matters more, and June's data suggests stablecoins are shifting from parked digital dollars into active payments infrastructure.