Dougan said there was continued momentum with clients across many of the bank's key businesses, including "the highest net asset inflows in our strategic businesses since the first quarter of 2011 and a meaningful increase in the share of assets under management from ultra-high-net-worth clients."
"At the same time, we maintained resilient leverage and capital positions and remain on track to meet our long term targets, notwithstanding methodology changes which increased risk weighted assets in the quarter. We also made good progress toward resolving legacy litigation matters," he said in a statement.
Read MoreNY regulator subpoenas Credit Suisse in tax probe: Source
Overall, Dougan said the quarter was a "very good one for us".
Last week, the New York Department of Financial Services subpoenaed Credit Suisse as the regulator's tax evasion probe of the firm widens, a source told CNBC on Tuesday.
The subpoena sought e-mails, personnel files, travel records, expenses and other materials of employees of the company's New York office, the source said.