Large self-directed custodian Mainstar Trust is a well-established self-directed retirement custodian with a sizable 120,000+ customer base and $8.5 billion in custody assets, indicating a potentially receptive audience for advanced custodial services and scalable solutions.

Growth opportunity With revenue in the mid range of $25M-$50M and an expanding customer footprint, there may be opportunities to upsell enhanced compliance, reporting, and efficiency tools tailored for mid-sized retirement accounts.

Outsourcing and tech Existing tech stack includes cloud-based and security-focused tools (Cloudflare, Windows Server, analytics) suggesting receptivity to modernization, security enhancements, and API integrations to streamline operations.

Customer-first positioning Strong emphasis on exceptional customer service and experienced staff presents a pathway to offer CRM, concierge support platforms, client onboarding improvements, or training services to further elevate service levels.

Competitive landscape Competes with larger players and peers in the self-directed space; selling points could focus on cost efficiency, scalable custody solutions, regulatory support, and differentiated service levels to win share from competitors.