**USDC vs USDT Summary (Sept 2026)**

- **USDT (Tether)**: Larger (~$184B supply, ~60% market share), deepest global liquidity, preferred for trading & remittances. Reserves include Treasuries + gold, Bitcoin & loans. Less transparent (quarterly reports).
- **USDC (Circle)**: Smaller (~$75B, ~25% share) but leads in real transaction volume (~70%). Fully cash + short-term Treasuries, monthly Deloitte attestations, publicly traded issuer, MiCA & U.S. regulated. Preferred by institutions.

**Quick Verdict**:
USDT wins on size & liquidity.
USDC wins on safety, transparency & regulatory compliance.

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