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SEI
SEI was founded in 1968 by Alfred P. West Jr., who remains chairman and CEO, making it one of the longest-tenured independent asset management firms in...
SEI
SEI was founded in 1968 by Alfred P. West Jr., who remains chairman and CEO, making it one of the longest-tenured independent asset management firms in the US. The firm went public in 1980 and has since expanded from its original back-office processing for banks into a full-service asset management and technology platform serving institutional investors, private banks, and independent advisors. SEI's investment strategy spans multiple asset classes including private credit, infrastructure, real estate, and hedge funds, with a particular emphasis on outsourced CIO and managed account solutions. The firm maintains direct investment programs alongside a fund-of-funds approach, with known exposures to Blackstone and other alternative managers. Its geographic footprint is primarily North America, with additional operations in Europe and Asia. SEI employs over 4,000 professionals globally across offices including New York, Washington DC, London, Dublin, and Singapore. In 2024, the firm launched a new private credit fund targeting middle-market direct lending opportunities, reflecting its shift toward alternative assets. The firm's philanthropic arm, the SEI Foundation, supports financial literacy and community development programs. SEI's structural differentiator is its vertically integrated model: it builds the technology that powers its investment platforms, processes trades for half of the US mutual fund industry, and manages its own funds — creating a data moat that few competitors replicate. The firm's succession planning is notable for West's extended tenure, though the board has begun transitioning operational leadership in recent years.
General information
Firm type
Asset Manager
Year founded
1968
AUM
Undisclosed
Location
Region
North America
Country
United States
City
New York
Corporate office
New York, NY, United States
Additional offices
Washington, DC, United States
Principals
Alfred P. West Jr.
Founder, Chairman, and CEO
Sector focus
Frequently asked questions
Who runs investment decisions at SEI?
Alfred P. West Jr., the founder, remains chairman and CEO. Investment decisions are managed by a combination of internal portfolio managers and outsourced CIO teams, with SEI's Investment Management Unit overseeing asset-allocation and manager selection for its funds.
How does SEI source proprietary deal flow?
SEI's scale as a technology provider to the wealth management industry gives it unique data on advisor and investor behavior. It also leverages relationships with alternative managers like Blackstone to access private deals, though its primary sourcing remains through its own manager research and due diligence teams.
Is SEI structured as a family office or does it operate more like a venture firm?
SEI is a publicly-traded corporation, not a family office. It operates as an asset manager and fintech provider, with a structure more akin to BlackRock or Fidelity than a family office. The founding West family retains significant ownership but does not manage the firm as a single-family vehicle.
Does SEI participate in fund commitments or only direct deals?
SEI does both. It commits capital to external funds as part of its managed-account strategies and also makes direct investments through its private credit and infrastructure vehicles. The firm is known for its fund-of-funds approach in alternatives.
What investment stages does SEI typically target?
SEI targets a broad range from mid-market private credit to large-cap infrastructure, with a focus on income-producing assets. Its hedge fund exposure spans multi-strategy and event-driven funds, while private credit focuses on direct lending to established middle-market companies.
Which sectors does SEI explicitly avoid?
SEI does not publicly publish a list of excluded sectors. However, its private credit funds tend to avoid early-stage venture, commodity speculation, and pure-play crypto exposures based on reported portfolio compositions.
How is SEI related to its philanthropic foundation?
The SEI Foundation operates as a separate 501(c)(3) entity funded by SEI corporate profits. It focuses on financial literacy and community development, distinct from the firm's for-profit asset management and technology operations.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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