Private investment firm Aquiline has announced it has reached a definitive agreement with SEI to acquire its family office services business for $120m.

Upon completion of the transaction, the business will operate as Archway, seeking to capitalise on the brand of the Archway Platform within the family office market.

SEI’s family office services business delivers technology and outsourced services for the accounting, investment management, and reporting functions of family offices and family office divisions of financial intermediaries.

The business had $723bn in assets on SEI’s Archway Platform, as at 31 December 2024.

As part of the deal, employees from across SEI’s family office services arm will transition with the business, including members of the core leadership team.

The transaction is expected to close late in the second quarter of 2025, subject to regulatory approval and other customary closing conditions.

Morgan Stanley & Co. LLC served as financial adviser to Aquiline, while Ropes & Gray LLP served as legal counsel to Aquiline. Holland & Knight served as legal counsel to SEI.

Commenting on the announcement, SEI family office services business head, Sandy Ewing, said: “As part of SEI’s broader growth strategy, we’re committed to investing in the areas of our business where we believe we can drive growth, and for more than seven years, we’ve made substantial investments in the solutions and capabilities we deliver for the family office segment.

“Our talented team has worked tirelessly to build and grow this business, evidenced by its strong reputation in the family office market and our award-winning Archway Platform.
“We’re proud of their contributions to SEI’s growth, and we could not be more appreciative of their dedication to advancing the technology solutions and delivering best-in-class service for our clients.

“Aquiline is a well-respected investment partner across the financial services industry. With their strategic commitment to transforming the client experience and streamlining complex family office operations, we believe they can accelerate growth and adoption of the Archway Platform across the private wealth landscape.”

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