White Mountains Insurance Group has committed $125 million in strategic capital to Bishop Street Underwriters, a RedBird Capital Partners portfolio company, marking a significant expansion of the managing general agent's financial resources. The investment reflects Bishop Street's operational momentum, as the MGA achieved over $650 million in gross written premium during 2025 through organic growth initiatives.
Under the terms of the partnership, White Mountains will assume a strategic growth role aimed at accelerating Bishop Street's market expansion and enhancing its competitive position within the MGA sector. The capital injection provides the platform with enhanced financial flexibility to pursue organic development opportunities and strengthen its operational infrastructure across key markets.
This transaction underscores continued investor appetite for established MGA platforms demonstrating consistent premium growth and operational discipline. Bishop Street's achievement of $650 million in gross written premium reflects the sector's ongoing consolidation and the market's demand for specialized underwriting capabilities in niche insurance segments.