JPMorgan, Wells Fargo, Goldman Sachs and Citi kicked off earnings season on Wednesday with their December-quarter results.

Big bank profits surged in the fourth quarter and Wall Street roared back to life, with net income rising 50% at JPMorgan Chase and more than doubling at Goldman Sachs.

JPMorgan’s net income soared 50% to more than $14 billion in the fourth quarter as the bank’s profit and revenue easily beat Wall Street forecasts, and other major banks reported banner earnings for the year.