Concern around a potential U.S. recession has deepened in recent months as an unabating rise in inflation pushes the Federal Reserve to aggressively hike interest rates, increasing market volatility. The market moves have dried up underwriting and advisory fees for investment bankers who drove Wall Street's profit during the depths of COVID-19. The Treasury and Trade Solutions business - Citi's crown jewel - posted a 33% jump in revenue to $3 billion thanks to higher net interest income and fee growth.