Wall Street's biggest banks reaped almost $37bn in trading revenues in the first quarter of the year -- their best performance in more than a decade -- as Donald Trump's administration unleashed a barrage of market-moving announcements. The combined performance by JPMorgan Chase, Goldman Sachs, Morgan Stanley, Bank of America and Citigroup marks a return to favor for a business that until 2020 had been a shadow of its pre-financial crisis form.