shares of credit suisse fell close to their lowest level in 30 years after a report said the swiss lender’s chairman is being investigated by regulators for remarks he made last year axel lehmann made several public statements in early december saying that outflows from the bank had virtually stopped after which shares stabilized switzerland’s finma is looking into whether lehmann knew clients were still withdrawing funds reuters reported citing unidentified people familiar with the situation  credit suisse was down 65 in zurich trading on tuesday to 259 francs the stock has lost 66 in the past year