SEI Investments Company (SEIC) ownership: Top institutional holder: VANGUARD GROUP INC ($908.07M). Insider activity: Net Seller (2 buys, 18 sells). 2 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 11071365.00 | $908.07M | 2025-12-31 |
| BlackRock, Inc. | 10110337.00 | $793.36M | 2026-03-31 |
| LOOMIS SAYLES & CO L P | 8628879.00 | $677.11M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6125643.00 | $480.68M | 2026-03-31 |
| MORGAN STANLEY | 4792279.00 | $376.05M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4741716.00 | $372.08M | 2026-03-31 |
| STATE STREET CORP | 4185178.00 | $328.41M | 2026-03-31 |
| BlackRock Fund Advisors | 5369171.00 | $265.02M | 2016-12-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-04 | |
| Sell | null | 2026-05-04 | |
| Sell | null | 2026-05-04 | |
| Sell | null | 2026-05-04 | |
| Sell | null | 2026-04-28 | |
| Sell | null | 2026-04-28 | |
| Sell | null | 2026-04-28 | |
| Sell | null | 2026-04-23 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.