Credit Suisse is expected to be the best performing investment bank this year and next as it increasingly becomes a “cash cow” on the back of market gains in its fixed-income flow businesses, although cleaner results are helping to slowly fuel the turnaround of “supertanker” UBS, according to a new report.

JP Morgan's bank analysts said in a note to clients that Credit Suisse was their top pick among investment banks globally due in large part to its market share gains in investment banking, restructuring of cost and risk-taking businesses within investment banking, no management turnover, limited credit risk and its capital strength.