The bank said the advisors and associates who left had managed under 20% of wealth management assets, as of the end of the first quarter.

The San Francisco bank, on shaky ground after two regional peers failed last month, said that customers pulled more than 40% of their deposits last quarter. It's been forced to turn to more expensive sources of funding, which analysts said will squeeze its profitability.

The outflows and expected losses this year at key businesses such as wealth and investment banking highlight the risks for UBS of its planned integration over the next four years.

More than $12.6 billion flows into equity exchange-traded funds in April, the most since January.

The giant custodian's parent company, BNY Mellon, is working on how best to help it work together with its other businesses, CEO Robin Vince said.

Wealth management lifted the firm's bottom line, as the unit's revenues rose 11% over the past year and it hauled in assets across multiple channels.

Although the bank's wealth businesses logged strong organic growth for the quarter, revenue fell and hiring languished after two strong quarters of headcount gains under then-president Andy Sieg's leadership.

CEO David Solomon sees potential for business in the wake of a merger involving two of its rivals for business among the ultrawealthy, he told analysts.

The giant financial institution's performance during the first three months of 2023 is being closely watched by the wealth management industry.

The firm followed rival wirehouses that no longer share their exact number of brokers, which is a critical metric for industry recruiting trends.