Ally Financial's stock plummeted 5.89% in pre-market trading following the release of its fourth-quarter earnings report. The company reported adjusted earnings of $1.09 per share, beating the FactSet estimate of $1.02, but net revenue of $2.12 billion fell short of the expected $2.14 billion.

Investors reacted negatively to the mixed results, with additional concerns arising from the company's provision for credit losses, which totaled $487 million for the quarter. While Ally Financial posted a net income of $300 million, reversing a year-ago loss, the revenue miss and credit loss provisions appear to have overshadowed the positive earnings performance.