Investors 'searching for weakness' across banks -adviser

STORY: Still, Yang says that "Credit Suisse has been a story that's been playing out for a number of years.... It's still generally a story of bad corporate management."

Switzerland is under pressure from at least one major government to intervene quickly on Credit Suisse, a source familiar with the situation told Reuters, after the Swiss bank led a rout of European bank stocks on Wednesday.

Banking stocks have been on a roller-coaster ride this week, tumbling at the start of the week in the face of assurances from U.S. President Joe Biden before jumping on Tuesday on hopes the worst of the market rout was over.