United States $11.3 Billion Private Investment Firm Aquiline to Buy SEI Family Office Services Business (Archway Platform) with $723 Billion Assets for $120 Million, Archway Provides Technology & Outsourced Services for Accounting, Investment Management & Reporting Functions
1st March 2025 | Hong Kong
United States private investment firm Aquiline ($11.3 billion AUM) has announced to buy SEI Family Office Services business (Archway Platform) with $723 billion assets for $120 million. Archway provides technology & outsourced services for accounting, investment management & reporting functions. Announcement (27/2/25): “Aquiline, a private investment firm specializing in financial services and technology, and SEI® (NASDAQ:SEIC) today announced that the companies have entered into a definitive agreement for Aquiline to acquire SEI’s Family Office Services business. Following the transaction’s close, the business will operate as Archway, capitalizing on the well-known and respected brand of the Archway Platform within the family office market. SEI’s Family Office Services business delivers technology and outsourced services that connect and power the accounting, investment management, and reporting functions of family offices and family office divisions of financial intermediaries. SEI’s Archway Platform is designed to streamline family office operations and deliver advanced financial reporting for ultra-high-net-worth families. As of Dec. 31, 2024, SEI’s Family Office Services business had $723 billion in assets on the Archway Platform. As part of the transaction, Family Office Services employees in SEI’s Indianapolis, Denver, and Oaks offices, including members of the Family Office Services business’ core leadership team, will transition with the business. The total purchase price is $120 million, and the transaction is expected to close in late second quarter 2025, subject to applicable regulatory approval and other customary closing conditions. Morgan Stanley & Co. LLC served as financial advisor to Aquiline, and Ropes & Gray LLP served as legal counsel to Aquiline. Holland & Knight served as legal counsel to SEI.”
“ United States $11.3 Billion Private Investment Firm Aquiline to Buy SEI Family Office Services Business (Archway Platform) with $723 Billion Assets for $120 Million, Archway Provides Technology & Outsourced Services for Accounting, Investment Management & Reporting Functions “
Aquiline – Aquiline Capital Partners LP (“Aquiline”) is a private investment firm based in New York, London, and Philadelphia, that is dedicated to financial services and technology. As of September 30, 2024, Aquiline has approximately $11.3 billion of assets under management and has deployed approximately $7.0 billion of capital across the firm’s three strategies in private equity, venture, and credit.
SEI – SEI (NASDAQ:SEIC) is a leading global provider of financial technology, operations, and asset management services within the financial services industry. SEI tailors its solutions and services to help clients more effectively deploy their capital—whether that’s money, time, or talent—so they can better serve their clients and achieve their growth objectives. As of Dec. 31, 2024, SEI manages, advises, or administers approximately $1.6 trillion in assets.
United States $11.3 Billion Private Investment Firm Aquiline to Buy SEI Family Office Services Business (Archway Platform) with $723 Billion Assets for $120 Million, Archway Provides Technology & Outsourced Services for Accounting, Investment Management & Reporting Functions

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