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

Wall Street expects JPMorgan Chase & Co. JPM to report quarterly earnings at $4.04 per share on revenue of $41.56 billion before the opening bell, according to data from Benzinga Pro. JPMorgan shares fell 0.1% to $247.22 in after-hours trading.