I don't know how USDC is set up. But I thought stablecoins work like this: The creator sells their coins at $1.01, so it will never go beyond $1.01 as it would be cheaper to by from the creator. They buy their coin at $0.99. So it will never go below $0.99 as it would be better to sell to the creator.
That is definitely not how USDC is set up. The creator takes 1 USD, and gives back 1 USDC and vice versa. In this case, some of the USD held at SVB disappeared, so Circle has less money for the USDC -> USD redemptions. There needs to be a 1:1 backing, otherwise a stable coin is just smoke and mirrors.
I don't know how USDC is set up. But I thought stablecoins work like this: The creator sells their coins at $1.01, so it will never go beyond $1.01 as it would be cheaper to by from the creator. They buy their coin at $0.99. So it will never go below $0.99 as it would be better to sell to the creator.