$USDT how today?

USDC showed the tighter peg over the sampled 30-day period, while USDT traded slightly farther below $1 and with a wider observed range. Both remained broadly stable, with no large depeg visible in the data.

Deep Dive

USDC had the smaller deviation

USDC’s sampled prices stayed between $0.99978 and $1.00000, a range of $0.00022, or 2.2 basis points. It is currently at $0.99989, about 1.1 basis points below $1, and is down 0.003% over 30 days.

USDT was more variable

USDT’s sampled prices ranged from $0.99932 to $0.99985, a $0.00053 range, or 5.3 basis points. It is currently at $0.99913, about 8.7 basis points below $1, and is down 0.064% over 30 days.

The comparison uses roughly three-day price observations, so it measures sampled spot stability rather than every intraday deviation. On that basis, USDC was the steadier peg, while USDT’s current discount is the more notable reading.

Bottom line: USDC had the stronger peg stability over this 30-day sample, while USDT remained functional but showed more downside drift and variability. The read would change if USDT returned close to $1 and its subsequent sampled range narrowed relative to USDC.