Sei Investments CompanySEIC
13F holders, Q2 2025 (June 30)564holders +17
100new positions
77sold out
10famous investors
$89.86avg. 13F price*
At the end of Q2 2025, 564 institutions reported holding Sei Investments Company (SEIC) in their 13F filings, up 17 from Q1 2025. 100 opened new positions and 77 sold out. The largest holders were Vanguard Group Inc. ($1.0B), BlackRock, Inc. ($826.9M) and Loomis Sayles & Co. L P ($794.5M). 10 famous investors held it, including Tom Gayner (0.1% of Markel Group's portfolio), Jim Simons / Peter Brown (0.1% of Renaissance Technologies's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Sei Investments Company
- CUSIP
- 784117103
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 100 | $235.2M |
| Exits | 77 | $168.6M |
All 13F filers, Q1 2025 → Q2 2025: 8,148,365 shares bought and 11,701,560 shares sold, net −3,553,195 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 564 holders
| Vanguard Group Inc. | 0.02% | Reduce -2.0% | 11,229,621 | $1.0B |
| BlackRock, Inc. | 0.02% | Reduce -19.1% | 9,202,020 | $826.9M |
| Loomis Sayles & Co. L P | 1.00% | Add +1.4% | 8,841,249 | $794.5M |
| Morgan Stanley | 0.03% | Reduce -2.8% | 5,634,328 | $506.3M |
| State Street Corp. | 0.02% | Reduce -17.3% | 4,745,485 | $426.4M |
| Bank of America Corp. | 0.02% | Add +4.4% | 3,160,636 | $284.0M |
| Beutel, Goodman & Co Ltd. | 1.33% | Reduce -2.8% | 2,600,616 | $233.7M |
| Geode Capital Management, LLC | 0.02% | Reduce -4.2% | 2,576,037 | $231.5M |
| Dimensional Fund Advisors LP | 0.04% | Add +5.7% | 1,831,099 | $164.5M |
| First Trust Advisors LP | 0.13% | Add +9.2% | 1,727,334 | $155.2M |
| Invesco Ltd. | 0.03% | Reduce -2.4% | 1,662,650 | $149.4M |
| Lord, Abbett & Co. LLC | 0.45% | Add +122.3% | 1,482,849 | $133.2M |
| Boston Trust Walden Corp | 0.88% | Add +3.3% | 1,369,674 | $123.1M |
| Royce & Associates LP | 1.13% | Reduce -4.2% | 1,226,752 | $110.2M |
| Royal Bank of Canada | 0.02% | Add +79.4% | 1,123,136 | $100.9M |
| Caisse de depot et placement du Quebec | 0.20% | Add +39.2% | 1,026,054 | $92.2M |
| Bank of New York Mellon Corp | 0.02% | Reduce -9.9% | 1,020,339 | $91.7M |
| Northern Trust Corp. | 0.01% | Reduce -13.2% | 914,465 | $82.2M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.02% | Add +7.5% | 861,490 | $77.4M |
| FMR LLC | 0.00% | Reduce -8.3% | 838,078 | $75.3M |
| Azora Capital LP | 3.16% | Add +109.3% | 777,952 | $69.9M |
| Charles Schwab Investment Management Inc. | 0.01% | Reduce -0.8% | 666,581 | $59.9M |
| Norges Bank | 0.01% | Add +15.5% | 619,682 | $55.7M |
| Ameriprise Financial Inc. | 0.01% | Add +19.4% | 594,661 | $53.4M |
| Millennium Management | 0.05% | Reduce -25.8% | 581,434 | $52.2M |
| Franklin Resources Inc. | 0.01% | Add +0.2% | 545,359 | $49.0M |
| Raymond James Financial Inc. | 0.02% | Add +1.9% | 542,591 | $48.8M |
| Natixis Advisors, LLC | 0.08% | Reduce -1.6% | 529,634 | $47.6M |
| American Capital Management Inc. | 1.73% | Reduce -11.0% | 463,776 | $41.7M |
| ProShare Advisors LLC | 0.08% | Add +25.0% | 452,154 | $40.6M |
| Prana Capital Management, LP | 1.44% | Add +15.2% | 442,288 | $39.7M |
| Goldman Sachs Group Inc. | 0.01% | Add +92.9% | 423,894 | $38.1M |
| Renaissance Technologies | 0.05% | Add +113.3% | 421,926 | $37.9M |
| Qube Research & Technologies Ltd | 0.05% | Add +76.1% | 420,079 | $37.7M |
| Jupiter Asset Management Ltd. | 0.31% | New | 417,205 | $37.5M |
| AQR Capital Management | 0.03% | Reduce -3.4% | 392,505 | $35.3M |
| UBS Group AG | 0.01% | Reduce -4.5% | 381,094 | $34.2M |
| Jane Street Group, LLC | 0.06% | Add +56.1% | 378,372 | $34.0M |
| JPMorgan Chase & Co. | 0.00% | Reduce -23.8% | 372,028 | $33.4M |
| Arrowstreet Capital, Limited Partnership | 0.02% | Add +33.9% | 366,742 | $33.0M |
| Envestnet Asset Management Inc. | 0.01% | Reduce -9.9% | 356,037 | $32.0M |
| Rhumbline Advisers | 0.02% | Reduce -6.0% | 316,381 | $28.4M |
| Voloridge Investment Management, LLC | 0.09% | Reduce -50.5% | 285,697 | $25.7M |
| Alps Advisors Inc. | 0.14% | Reduce -0.7% | 276,449 | $24.8M |
| Retirement Systems of Alabama | 0.09% | Reduce -0.6% | 274,629 | $24.7M |
| JLB & Associates Inc. | 3.36% | Reduce -3.0% | 268,261 | $24.1M |
| Two Sigma Investments, LP | 0.04% | Add +229.5% | 249,399 | $22.4M |
| Legal & General Group Plc | 0.01% | Reduce -40.0% | 241,531 | $21.7M |
| Nuveen, LLC | 0.01% | Reduce -14.1% | 236,776 | $21.3M |
| Interval Partners, LP | 0.47% | Reduce -8.9% | 229,753 | $20.6M |
| Martingale Asset Management L P | 0.50% | Reduce -1.6% | 228,004 | $20.5M |
| Man Group plc | 0.04% | Reduce -36.9% | 222,953 | $20.0M |
| Principal Financial Group Inc. | 0.01% | Reduce -7.0% | 214,908 | $19.3M |
| Swiss National Bank | 0.01% | New | 204,100 | $18.3M |
| Citadel Advisors | 0.02% | New | 202,576 | $18.2M |
| Crestwood Advisors Group, LLC | 0.32% | Reduce -3.3% | 201,193 | $18.1M |
| Leith Wheeler Investment Counsel Ltd. | 1.28% | Reduce -2.6% | 200,409 | $18.0M |
| State of Alaska, Department of Revenue | 0.19% | Reduce -0.3% | 198,665 | $17.9M |
| Treasurer of the State of North Carolina | 0.05% | Add +112.8% | 186,329 | $16.7M |
| California Public Employees Retirement System | 0.01% | Add +12.1% | 178,461 | $16.0M |
| Vestcor Inc | 0.47% | Reduce -1.3% | 174,472 | $15.7M |
| Markel Group | 0.13% | No change | 173,200 | $15.6M |
| Trexquant Investment LP | 0.17% | New | 163,649 | $14.7M |
| Amundi | 0.01% | Reduce -79.8% | 157,857 | $14.5M |
| KLP Kapitalforvaltning As | 0.06% | Reduce -4.2% | 155,500 | $14.0M |
| Brandywine Global Investment Management, LLC | 0.10% | Add +101.5% | 154,577 | $13.9M |
| Barclays PLC | 0.01% | Add +33.3% | 154,078 | $13.8M |
| Victory Capital Management Inc. | 0.01% | Reduce -12.1% | 153,536 | $13.8M |
| Foyston, Gordon & Payne Inc | 3.10% | Add +6.9% | 151,481 | $13.6M |
| D. E. Shaw & Co. | 0.01% | New | 145,566 | $13.1M |
| Russell Investments Group, Ltd. | 0.02% | Reduce -19.3% | 145,003 | $13.0M |
| Allianz Asset Management GmbH | 0.02% | Reduce -25.8% | 143,855 | $12.9M |
| Schonfeld Strategic Advisors LLC | 0.10% | Add +59.4% | 143,685 | $12.9M |
| Osaic Holdings, Inc. | 0.02% | Add +7.3% | 139,654 | $12.5M |
| King Luther Capital Management Corp. | 0.05% | Add +31.2% | 138,265 | $12.4M |
| State Board of Administration of Florida Retirement System | 0.02% | Reduce -3.7% | 137,129 | $12.3M |
| Janney Montgomery Scott LLC | 0.03% | Add +5005.9% | 135,511 | $12.2M |
| Van Eck Associates Corp. | 0.01% | Add +121.9% | 135,196 | $12.1M |
| Squarepoint Ops LLC | 0.03% | New | 133,094 | $12.0M |
| Bridgewater Associates | 0.05% | Reduce -11.6% | 129,587 | $11.6M |
| Alliancebernstein L.P. | 0.00% | Reduce -0.7% | 126,533 | $11.4M |
| TD Asset Management Inc | 0.01% | Reduce -13.3% | 125,676 | $11.3M |
| Bank of Montreal | 0.01% | Reduce -8.6% | 123,098 | $11.1M |
| New York State Teachers Retirement System | 0.02% | Reduce -0.4% | 117,501 | $10.6M |
| Bank of Nova Scotia | 0.02% | Add +2917.0% | 117,000 | $10.5M |
| American Century Companies Inc. | 0.01% | Add +17.0% | 116,161 | $10.4M |
| Cubist Systematic Strategies, LLC | 0.11% | New | 116,093 | $10.4M |
| Truist Financial Corp. | 0.02% | Reduce -0.4% | 115,153 | $10.3M |
| Hahn Capital Management LLC | 4.80% | Reduce -1.5% | 113,207 | $10.2M |
| Abn Amro Investment Solutions | 0.19% | Reduce -2.5% | 107,850 | $9.7M |
| California State Teachers Retirement System | 0.01% | Reduce -20.6% | 104,769 | $9.4M |
| Acadian Asset Management LLC | 0.02% | Reduce -58.3% | 104,687 | $9.4M |
| Thrivent Financial for Lutherans | 0.02% | Reduce -20.6% | 104,293 | $9.4M |
| HRT Financial LP | 0.04% | New | 103,030 | $9.3M |
| Quantinno Capital Management LP | 0.04% | Add +124.2% | 103,006 | $9.3M |
| Susquehanna Portfolio Strategies, LLC | 0.20% | New | 100,596 | $9.0M |
| Rockefeller Capital Management L.P. | 0.02% | New | 100,037 | $9.0M |
| LPL Financial LLC | 0.00% | Add +6.0% | 99,055 | $8.9M |
| Wells Fargo & Company | 0.00% | Add +51.5% | 95,667 | $8.6M |
| Teacher Retirement System of Texas | 0.04% | Reduce -70.2% | 94,711 | $8.5M |
"% of holder's portfolio" is SEIC's weight in each manager's 13F, not the share of Sei Investments Company the manager owns.