Bank of America Merrill Lynch and JP Morgan both made money on every single trading day in the first quarter, according to regulatory filings.

Bank of America Merrill Lynch said in its quarterly 10-Q filing with the Securities and Exchange Commission that positive trading-related revenue was recorded for 100% of the 60 trading days in the three months ended March 31. The bank said it made gains of over $25m on 58 of these days.