Revenue at the world’s 10 largest investment banks rose 9%, year-on-year, to $44.9 billion in the first quarter, as financial market volatility and central bank stimulus measures boosted profits.

Barclays, trying to stanch an exodus of senior dealmakers, posted a bigger- than-estimated drop in first-quarter profit as a fall in revenue from trading bonds, currencies, and commodities cut earnings from the investment bank by 49%.