Cullen/Frost is a regional US bank with around $50 billion in assets (as of 2024 year-end), and it focuses exclusively on the Texas market. The bank has deep expertise in this market. It has implemented a relationship-based approach to banking that has garnered a strong market share in San Antonio. Cullen/Frost is also expanding into Houston, Dallas, and Austin market regions through branch openings. The bank's sweet spot is small to medium-size Texas-based commercial clients.