The stablecoin market keeps growing, and USDC is doing a lot of the heavy lifting. Circle’s flagship token added roughly $584M to its market cap over a single seven-day stretch, driving the bulk of a combined $1.0B increase shared across USDC, Ethena’s USDe, and PayPal’s PYUSD.
Where the stablecoin market stands right now
Total stablecoin supply has climbed to somewhere between $303B and $310B. USDC accounts for roughly $74B to $77B of that, which works out to about 24% of the total market.
Tether’s USDT still holds the commanding position at approximately $184B, or around 60% market share.
Where USDC consistently punches above its weight is in adjusted on-chain transaction volume. Despite trailing USDT in total supply, USDC has captured between 60% and 70% of adjusted transaction volume in multiple periods throughout 2026.
USDC also demonstrated significant momentum in August 2026, when it added $1.5B to its supply in a single week. The current $584M weekly gain is more modest but fits a pattern of consistent, repeatable minting demand rather than one-off spikes.
The three tokens doing the work
The $1.0B combined weekly increase came from USDC, USDe, and PYUSD, three tokens with very different architectures and risk profiles.
USDC is the straightforward one. Circle holds cash and short-term Treasuries as reserves, publishes regular attestations, and has built a reputation for regulatory compliance.
USDe, issued by Ethena, maintains its dollar peg through a delta-neutral strategy, holding spot ETH while simultaneously shorting ETH futures. USDe currently sits somewhere in the $4B to $6B range.
PYUSD, the PayPal-issued stablecoin built on infrastructure from Paxos, has experienced notable supply contractions in prior months, with drawdowns of between 11% and 35% at various points. Current supply sits in the $2.7B to $3.9B range.