Discover Financial Services (NYSE:DFS) reported Q4 earnings of $1.54 per share, missing estimates of $2.52 and down 58% from last year. Revenue was $4.196 billion, exceeding estimates and up 13% year-over-year. Total loans grew by 15%, but the net charge-off rate increased to 4.11% from 2.13% last year. The provision for credit losses rose by $1 billion year-over-year to $1.9 billion. Despite these challenges, interim CEO John Owen highlighted strong asset and deposit growth, a resilient net interest margin, and the launch of a new product, Cashback Debit. After the report, DFS shares dropped 6.20% in after-hours trading.