from https://tether.to/en/fees/ the 'fee per fiat withdrawal' is 'The greater of $1,000 or 0.1%' so it would theoretically make sense for the peg to be 0.1% off as there is no more profit from redemptions at that level.
coinmarketcap/coingecko are generally not very reliable for evaluating the stability of stablecoin pegs most liquidity tends to aggregate on dexes like Curve, which is also where you could have seen the whole LUNA/UST…
from https://tether.to/en/fees/ the 'fee per fiat withdrawal' is 'The greater of $1,000 or 0.1%' so it would theoretically make sense for the peg to be 0.1% off as there is no more profit from redemptions at that level.
coinmarketcap/coingecko are generally not very reliable for evaluating the stability of stablecoin pegs most liquidity tends to aggregate on dexes like Curve, which is also where you could have seen the whole LUNA/UST…