Earlier quoted context omitted.
> Banks are different. A random drop in their stock price will lead to a perceptions failure that trigger run conditions. This is how Signature and Credit Suisse were, at least proximately, done in. You have the cause & effect wrong, the stocks tanks because the bank is failing. Tons of banks that are not publicly traded fail too.
Credit Suisse had a 14% CET1 ratio, higher than JPMorgan. The stock price was depressed because it wasn't turning a profit but it was nowhere near a level of losses where it would be a concern from a creditor point of view.
> (March 9) Credit Suisse shares drop as annual report delayed following SEC call > Postponement comes as regulator weighs in on 2019 cash flow statements
> (March 14) Credit Suisse finds ‘material weaknesses’ in financial reporting controls > Swiss bank says it lacked effective processes to identify risk of misstatements