SEC Filing Summary: SEI Investments Co (13F-HR)
Business Context and Reporting Period
This Form 13F-HR is a 13F Combination Report filed by SEI Investments Co for the quarter ended March 31, 2026. The filing covers holdings managed by SEI and its subsidiaries: SEI Investments Management Corporation, SEI Trust Company, and SEI Investments Canada Company. SEI disclaims direct investment discretion for these positions, which are exercised by its operating subsidiaries. The report includes holdings managed directly by SEI subsidiaries as well as those managed by sub-advisers (Manager of Managers structure).
Key Financial Metrics
As a Form 13F filing, this document reports portfolio holdings rather than the operating financial performance (revenue, profit, cash flow) of SEI Investments Co itself. Key portfolio metrics reported include:
- Total Portfolio Value: $108,447,233,183
- Total Number of Holdings Entries: 6,108
- Number of Included Managers: 3 (SEI subsidiaries)
- Number of Other Managers Reporting: 48 (Sub-advisers listed in the filing)
Note: Revenue, profit margins, debt, and liquidity metrics for SEI Investments Co are not contained in this filing.
Material Changes and Portfolio Composition
The filing does not provide a comparative table of changes versus the prior period (December 31, 2025) within the provided text. However, the report structure indicates a complex "Manager of Managers" approach where SEI retains oversight while sub-advisers execute trades. The list of other managers reporting for this manager includes major institutions such as BlackRock, Goldman Sachs, Neuberger Berman, and Baillie Gifford, indicating a diversified allocation across various external strategies.
Guidance, Risks, and Contingencies
Voting Authority: Voting authority resides with SEI's operating subsidiaries. Although SEI disclaims voting authority, it reports these securities as "Sole Voting Authority" pursuant to Form 13F instructions to ensure compliance.
Risk Disclosure: The filing includes a standard SEC disclaimer stating that the Commission has not reviewed the information for accuracy or completeness. Investors should not assume the data is accurate or complete without independent verification.
Unusual Items: None explicitly flagged in the provided text.
Investor Verification Checklist
- Verify the total portfolio value of $108.4 billion against SEI's quarterly earnings report (10-Q) to confirm asset under management (AUM) growth.
- Review the list of 48 sub-advisers to understand the concentration of risk in external managers versus internal strategies.
- Confirm the specific holdings within the 6,108 entries to assess sector exposure and top 10 positions, which are not detailed in this summary text.
- Check for any amendments or restatements filed after the signing date of May 13, 2026.