The data highlights a strong wave of liquidity returning to the ecosystem, pushing the total circulating supply of USD Coin (USDC) to $76.9 billion.
Here is the breakdown of the weekly flow and exactly what is backing the digital currency:
The Weekly Numbers
For the week ending May 21, 2026, the net growth came down to a simple balance of aggressive minting outstripping redemptions:
1. $USDC Issued: ~$8.1 billion
2. USDC Redeemed: ~$7.7 billion
3. Net Weekly Increase: +$400 million
This rebound is a notable recovery from mid-May, which saw a temporary dip of $1.7 billion in circulation due to institutional capital rotations and shifting $DEFI volumes.
Why This Matters:
While #TETHER (USDT) maintains a larger overall market share (hovering around 59% of the stablecoin market), #USDC✅ continues to dominate institutional and high-velocity transaction volumes. Data from earlier this year showed USDC handling up to five times more monthly on-chain transfer value than its competitors.
A $400 million weekly expansion signals that institutional market makers, corporate B2B platforms, and automated AI settlement agents are actively injecting capital back into the crypto ecosystem, using $USDC as their preferred, highly regulated financial rail.