Citigroup swung to a profit in the fourth quarter, fueled by strength in trading and a recovery in dealmaking that drove up investment banking fees.

Citigroup’s fourth-quarter results just landed. The bank swung to a profit, boosted by stronger revenue in divisions including equity markets and investment banking. Some key numbers: Net income came in at $2.

Citigroup reported its fourth-quarter earnings Wednesday morning ahead of Wall Street's opening bell, beating estimates on the top and bottom lines and showing broad strength across the bank. Shares of the bank rose more than 3% in premarket trading.

Citigroup reported its fourth-quarter earnings Wednesday morning ahead of Wall Street's opening bell, beating estimates on the top and bottom lines. Shares of the bank rose more than 2% in premarket trading.