What We Learned From Big Bank Earnings on Friday

Key TakeawaysJPMorgan Chase, Citigroup, and Wells Fargo reported first-quarter results Friday—all three posted lower net interest income.However, these banks' earnings all increased from the fourth quarter as investment banking and trading revenue surged.Each big bank reduced the amount it set aside for potential credit losses, although average loan balances fell slightly. Large U.S. banks kicked off the first-quarter earnings report season by disclosing higher-than-expected profits. But their net interest ...