The two institutions said in a joint statement that Credit Suisse "meets the capital and liquidity requirements imposed on systemically important banks".

The comments come after the bank's stock plunged more than 30% on Wednesday and follow months of turmoil. Governments and at least one bank were putting pressure on Switzerland to act, said people familiar with the matter.

The SNB and FINMA also said "there are no indications of a direct risk of contagion for Swiss institutions due to the current turmoil in the US banking market."

(Reporting by Tom Sims; editing by John O'Donnell)