Capital One Financial Corp. has announced a definitive agreement to acquire Brex, a fintech company specializing in corporate cards and expense management, for $5.15 billion. The deal consists of approximately 50% cash and 50% stock. This acquisition marks a significant move by Capital One to expand its offerings in business payments and technology services.

The announcement was made in conjunction with Capital One's fourth-quarter earnings report. Following the news, Capital One's shares saw a decline of over 4%. The transaction is expected to close in mid-2026, pending regulatory approval. The acquisition is part of Capital One's strategy to integrate advanced technology and AI-powered tools to modernize financial operations for businesses.