Capital One is buying fintech company Brex for $5.15 billion in cash and stock. Brex, which focuses on corporate credit card technology and manages nearly $13 billion in deposits, will enhance Capital One's capabilities in serving corporate clients. The announcement came alongside Capital One's strong quarterly earnings report.

Capital One has completed its acquisition of Discover Financial Services for $35 billion, marking a significant move in the financial services industry. The deal is expected to enhance Capital One's market position and expand its customer base.