SEI Investments Management

SEI Investments Company is a publicly traded corporation (NASDAQ: SEIC), but founder Alfred P. West Jr. retains majority voting control through a dual-class share structure. Class B shares, overwhelmingly held by West and affiliated entities, carry ten votes per share. This gives the founder effective control over board elections and major corporate decisions despite a minority economic interest. The structure has kept strategic decision-making concentrated with long-tenured leadership since the firm's 1968 founding.

SEI typically reports two distinct figures. Platform assets include client money held on its technology infrastructure plus assets under discretionary management and advisement; the December 2023 figure was roughly $1.4 trillion. Assets under management (AUM) specifically reflect money where SEI acts as a fiduciary investment manager, a much smaller subset. Discretionary management often involves selecting and monitoring outside sub-advisors rather than directly picking securities, a 'manager of managers' model built for the bank trust and independent advisor channels.

No. SEI is categorized as a public asset manager whose founding family retains voting control, not as a single-family office managing personal wealth. Alfred P. West Jr. and his family hold a significant portion of SEI stock personally, but the firm itself manages external client assets aggregating over a trillion dollars. There is no publicly disclosed family-office vehicle sitting beside SEI for exclusive management of West family wealth; the family's largest asset is the SEI stake itself.

SEI primarily uses an open-architecture manager-of-managers model for equity and fixed-income mandates. It selects, contracts, and monitors dozens of third-party sub-advisors — including large institutions like LSV Asset Management and SSGA — rather than building all strategies internally. For private markets and alternatives, the firm has historically provided fund-of-funds access through its SEI Private Wealth Management unit and, more recently, revamped its alternative-investment team to develop a centralized private-markets platform for its U.S. wealth channel.

The dual-class share structure ensures that Alfred P. West Jr. or his designated successors can control the board regardless of public float. The firm appointed Ryan Hicke as CEO in 2022, a veteran of the organization, while West continued as Chairman. This transition followed a deliberate, multi-year succession process. Because voting power ultimately rests with the founding family, a hostile takeover is structurally impossible, suggesting the firm will remain independent and governed by its established strategic playbook for the foreseeable future.

The two are operationally integrated and commercially cross-subsidizing. SEI's SEI Wealth Platform, a cloud-based processing system for trust accounts and advisory portfolios, generates processing fees while simultaneously making SEI-managed funds the default or easily selectable investment options for client accounts on that platform. This bundling creates high client retention and makes it difficult for banks or RIAs to replace SEI with a piecemeal selection of competing custody, technology, and investment vendors.

SEI's historical base sits with community and regional bank trust departments, which use its technology and investment programs to serve retail trust accounts. That base has broadened to include independent RIAs, family offices, institutional retirement plans, and non-profit organizations. Outside the U.S., the firm runs significant platforms in the United Kingdom and Canada, serving wealth managers and institutional investors respectively. The common thread across all segments is selling an integrated 'outsourced investment office' solution rather than a standalone fund.