Aquiline's Strategic Acquisition: SEI's Family Office Services Business

Aquiline Capital Partners LLC ("Aquiline"), a private investment firm specializing in financial services and technology, has announced its acquisition of SEI Investments Company's ("SEI") Family Office Services business. The transaction, valued at $120 million, is expected to close in late Q2 2025, subject to regulatory approval and customary closing conditions. Morgan Stanley & Co. LLC served as financial advisor to Aquiline, while Ropes & Gray LLP and Holland & Knight served as legal counsel to Aquiline and SEI, respectively.

The Family Office Services business, which will operate as Archway post-acquisition, provides technology and outsourced services for accounting, investment management, and reporting functions for ultra-high-net-worth families, family offices, and financial intermediaries. As of December 31, 2024, the Archway Platform had $723 billion in assets, demonstrating its significant market penetration and potential for growth.

Aquiline's acquisition of SEI's Family Office Services business aligns perfectly with its investment philosophy, focusing on stable, predictable, and consistent growth. The Archway Platform's strong reputation, extensive workflow capabilities, and comprehensive general ledger engine make it an attractive addition to Aquiline's portfolio. The transaction also includes the transition of Family Office Services employees from SEI's Indianapolis, Denver, and Oaks offices, ensuring operational continuity and preserving institutional knowledge.



The Family Office Services business has experienced remarkable growth, adding 20 new clients and $125 billion in platform assets since the beginning of 2021. This growth is a testament to the business's ability to meet the complex needs of family offices and its potential for continued expansion under Aquiline's ownership. The Archway Platform's strong reputation and extensive workflow capabilities, coupled with Aquiline's commitment to further investing in and extending the platform's capabilities, signal a promising future for the business.



The acquisition of SEI's Family Office Services business represents a strategic realignment in the specialized family office technology sector. The decision to revive the Archway brand name acknowledges the platform's strong market recognition prior to SEI's acquisition of the business in 2017. The $723 billion in assets on the platform demonstrates significant market penetration in the ultra-high-net-worth segment, though the explicit disclaimer that this figure "is not indicative of potential revenue" reveals the business operates on a software/service fee model rather than an asset-based revenue structure.

For Aquiline, this acquisition fits perfectly within its portfolio strategy. With previous successful investments in wealth management technology firms like Envestnet and Financeware, Aquiline brings specialized expertise in scaling financial technology platforms. Its commitment to "further invest and extend the platform" signals potential acceleration in product development and feature enhancement.

In conclusion, Aquiline's acquisition of SEI's Family Office Services business represents a strategic realignment in the specialized family office technology sector. The Archway Platform's strong reputation, extensive workflow capabilities, and comprehensive general ledger engine make it an attractive addition to Aquiline's portfolio. The transaction's potential for stable, predictable, and consistent growth aligns perfectly with Aquiline's investment philosophy, signaling a promising future for the business under its ownership.