That led analysts at Citigroup to conclude in a note to clients that management effectively indicated 15% of the outflows happened in December. Finma's scrutiny adds to the challenges faced by Credit Suisse, which has been rocked by scandals in recent years. The lender has embarked on a sweeping overhaul to restore profitability by exiting certain investment banking activities and focusing on managing money for the wealthy. In early October a social media storm triggered by an unsubstantiated report about the bank's financial health prompted wealthy customers to move deposits elsewhere.