Sei Investments CompanySEIC
13F holders, Q4 2025 (December 31)561holders +12
59new positions
55sold out
9famous investors
$82.06avg. 13F price*
At the end of Q4 2025, 561 institutions reported holding Sei Investments Company (SEIC) in their 13F filings, up 12 from Q3 2025. 59 opened new positions and 55 sold out. The largest holders were Vanguard Group Inc. ($908.1M), BlackRock, Inc. ($790.5M) and Loomis Sayles & Co. L P ($717.2M). 9 famous investors held it, including Tom Gayner (0.1% of Markel Group's portfolio), Ray Dalio (0.1% of Bridgewater Associates's portfolio) and Jim Simons / Peter Brown (0.1% of Renaissance Technologies's portfolio).
- Company
- Sei Investments Company
- CUSIP
- 784117103
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 59 | $55.3M |
| Exits | 55 | $74.4M |
All 13F filers, Q3 2025 → Q4 2025: 4,722,453 shares bought and 5,656,041 shares sold, net −933,588 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 561 holders
| Vanguard Group Inc. | 0.01% | Reduce -1.7% | 11,071,365 | $908.1M |
| BlackRock, Inc. | 0.01% | Add +4.0% | 9,637,840 | $790.5M |
| Loomis Sayles & Co. L P | 0.87% | Reduce -2.6% | 8,744,634 | $717.2M |
| Morgan Stanley | 0.02% | Reduce -9.3% | 5,075,178 | $416.3M |
| State Street Corp. | 0.01% | Reduce -5.6% | 4,283,065 | $353.5M |
| Bank of America Corp. | 0.02% | Reduce -6.4% | 2,922,323 | $239.7M |
| Geode Capital Management, LLC | 0.01% | Add +4.0% | 2,894,317 | $237.4M |
| Lord, Abbett & Co. LLC | 0.51% | Add +19.2% | 1,917,370 | $157.3M |
| Beutel, Goodman & Co Ltd. | 0.95% | Reduce -7.0% | 1,882,427 | $154.4M |
| Dimensional Fund Advisors LP | 0.03% | Reduce -0.5% | 1,853,144 | $152.0M |
| First Trust Advisors LP | 0.11% | Add +4.4% | 1,800,938 | $147.7M |
| Invesco Ltd. | 0.01% | Add +0.1% | 1,732,384 | $142.1M |
| Caisse de depot et placement du Quebec | 0.19% | Add +2.8% | 1,380,997 | $113.3M |
| FMR LLC | 0.01% | Reduce -0.5% | 1,343,174 | $110.2M |
| Boston Trust Walden Corp | 0.67% | Reduce -1.9% | 1,084,790 | $89.0M |
| Bank of New York Mellon Corp | 0.01% | Reduce -2.3% | 990,651 | $81.3M |
| Royce & Associates LP | 0.75% | Add +0.3% | 906,339 | $74.3M |
| Northern Trust Corp. | 0.01% | Reduce -3.4% | 891,476 | $73.1M |
| Ameriprise Financial Inc. | 0.02% | Add +0.7% | 821,461 | $67.4M |
| Franklin Resources Inc. | 0.02% | Add +28.2% | 818,694 | $67.1M |
| Charles Schwab Investment Management Inc. | 0.01% | Add +0.3% | 664,349 | $54.5M |
| Norges Bank | 0.01% | — | 652,868 | $53.5M |
| Prana Capital Management, LP | 1.94% | Reduce -8.5% | 651,166 | $53.4M |
| Clark Capital Management Group, Inc. | 0.33% | Add +2333.2% | 645,859 | $53.0M |
| UBS Group AG | 0.01% | Add +43.4% | 636,192 | $52.2M |
| Royal Bank of Canada | 0.01% | Reduce -35.7% | 611,174 | $50.1M |
| American Capital Management Inc. | 2.08% | Add +1.7% | 574,819 | $47.1M |
| Qube Research & Technologies Ltd | 0.07% | Reduce -26.6% | 563,212 | $46.2M |
| Raymond James Financial Inc. | 0.01% | Add +0.8% | 532,358 | $43.7M |
| PFA Pension, Forsikringsaktieselskab | 0.12% | — | 519,312 | $43.2M |
| Natixis Advisors, LLC | 0.05% | Reduce -7.9% | 470,476 | $38.6M |
| Arrowstreet Capital, Limited Partnership | 0.02% | Add +40.5% | 463,646 | $38.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.01% | Reduce -48.6% | 454,136 | $37.2M |
| AQR Capital Management | 0.02% | Reduce -3.3% | 451,873 | $37.1M |
| JPMorgan Chase & Co. | 0.00% | Add +13.7% | 433,470 | $35.6M |
| Envestnet Asset Management Inc. | 0.01% | Add +18.4% | 427,787 | $35.1M |
| ProShare Advisors LLC | 0.06% | Add +4.0% | 405,354 | $33.2M |
| Renaissance Technologies | 0.05% | Add +2.7% | 397,226 | $32.6M |
| Victory Capital Management Inc. | 0.02% | Add +183.3% | 382,841 | $31.4M |
| Voloridge Investment Management, LLC | 0.11% | Reduce -6.9% | 378,214 | $31.0M |
| Millennium Management | 0.02% | Reduce -43.3% | 371,635 | $30.5M |
| Bridgewater Associates | 0.10% | Add +31.8% | 345,877 | $28.4M |
| Man Group plc | 0.05% | Add +6.2% | 333,568 | $27.4M |
| Goldman Sachs Group Inc. | 0.00% | Add +32.8% | 319,208 | $26.2M |
| Barclays PLC | 0.01% | Add +100.6% | 311,803 | $25.6M |
| Thrivent Financial for Lutherans | 0.05% | Add +23.5% | 311,567 | $25.6M |
| Rhumbline Advisers | 0.02% | Reduce -5.2% | 309,335 | $25.4M |
| Retirement Systems of Alabama | 0.08% | Reduce -0.7% | 287,932 | $23.6M |
| Arbejdsmarkedets Tillaegspension | 0.60% | — | 285,176 | $23.4M |
| JLB & Associates Inc. | 2.88% | Reduce -2.4% | 260,197 | $21.3M |
| Alps Advisors Inc. | 0.11% | Reduce -5.6% | 223,077 | $18.3M |
| Azora Capital LP | 1.12% | New | 216,465 | $17.8M |
| Swiss National Bank | 0.01% | Add +1.0% | 207,100 | $17.0M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.04% | Add +302.1% | 204,267 | $16.8M |
| Principal Financial Group Inc. | 0.01% | Reduce -4.1% | 200,362 | $16.4M |
| Leith Wheeler Investment Counsel Ltd. | 1.21% | Reduce -3.4% | 196,383 | $16.1M |
| California Public Employees Retirement System | 0.01% | Reduce -2.8% | 193,650 | $15.9M |
| Legal & General Group Plc | 0.00% | Reduce -17.3% | 190,243 | $15.6M |
| Interval Partners, LP | 0.35% | Reduce -9.3% | 184,896 | $15.2M |
| HSBC Holdings PLC | 0.01% | Add +185.4% | 180,716 | $14.9M |
| Brandywine Global Investment Management, LLC | 0.10% | Add +8.0% | 179,610 | $14.7M |
| Public Employees Retirement Association of Colorado | 0.05% | No change | 178,435 | $14.6M |
| Vestcor Inc | 0.41% | No change | 174,337 | $14.3M |
| Nuveen, LLC | 0.00% | Reduce -26.6% | 173,330 | $14.2M |
| Markel Group | 0.11% | No change | 173,200 | $14.2M |
| Foyston, Gordon & Payne Inc | 3.08% | Add +11.0% | 172,580 | $14.2M |
| Citadel Advisors | 0.01% | Reduce -26.3% | 152,276 | $12.5M |
| Osaic Holdings, Inc. | 0.02% | Add +4.1% | 150,076 | $12.3M |
| Rockefeller Capital Management L.P. | 0.02% | Add +25.1% | 150,008 | $12.3M |
| Janney Montgomery Scott LLC | 0.03% | Add +6.9% | 148,911 | $12.2M |
| LPL Financial LLC | 0.00% | Add +31.6% | 148,123 | $12.1M |
| Schonfeld Strategic Advisors LLC | 0.06% | Reduce -5.2% | 147,300 | $12.1M |
| King Luther Capital Management Corp. | 0.05% | Add +10.2% | 137,439 | $11.3M |
| Jane Street Group, LLC | 0.01% | Add +24.4% | 137,237 | $11.3M |
| M&G PLC | 0.06% | Add +9.4% | 134,004 | $11.0M |
| Tidal Investments LLC | 0.05% | Add +26.8% | 133,322 | $10.9M |
| American Century Companies Inc. | 0.01% | Add +14.6% | 128,507 | $10.5M |
| KLP Kapitalforvaltning As | 0.04% | Add +0.2% | 127,200 | $10.5M |
| Alliancebernstein L.P. | 0.00% | Reduce -3.8% | 124,986 | $10.3M |
| Capital Fund Management S.A. | 0.09% | Add +27.4% | 121,390 | $10.0M |
| Teacher Retirement System of Texas | 0.03% | Add +18.2% | 120,925 | $9.9M |
| Engineers Gate Manager LP | 0.12% | Add +24.3% | 120,721 | $9.9M |
| Point72 Asset Management | 0.02% | New | 118,712 | $9.7M |
| State Board of Administration of Florida Retirement System | 0.02% | Reduce -6.8% | 116,370 | $9.5M |
| New York State Teachers Retirement System | 0.02% | Reduce -3.7% | 111,829 | $9.2M |
| Truist Financial Corp. | 0.01% | Add +2.5% | 111,295 | $9.1M |
| TD Asset Management Inc | 0.01% | Reduce -0.9% | 110,200 | $9.0M |
| Creative Planning | 0.01% | Add +165.8% | 110,041 | $9.0M |
| Wells Fargo & Company | 0.00% | Reduce -10.1% | 107,472 | $8.8M |
| Bank of Montreal | 0.00% | Reduce -1.5% | 106,077 | $8.7M |
| Quantinno Capital Management LP | 0.02% | Reduce -31.1% | 104,590 | $8.6M |
| Van Eck Associates Corp. | 0.01% | Add +1.4% | 102,390 | $8.4M |
| Hahn Capital Management LLC | 4.51% | Reduce -6.0% | 101,877 | $8.4M |
| Schroder Investment Management Group | 0.01% | Add +0.7% | 100,359 | $8.3M |
| California State Teachers Retirement System | 0.01% | Reduce -0.2% | 99,027 | $8.1M |
| Stifel Financial Corp. | 0.01% | Add +200.8% | 96,685 | $7.9M |
| Kathmere Capital Management, LLC | 0.51% | Reduce -0.1% | 92,934 | $7.6M |
| State of Wisconsin Investment Board | 0.02% | Add +3.2% | 88,440 | $7.3M |
| Robeco Institutional Asset Management B.V. | 0.01% | Reduce -33.1% | 87,786 | $7.2M |
| Martingale Asset Management L P | 0.18% | Reduce -60.5% | 85,767 | $7.0M |
"% of holder's portfolio" is SEIC's weight in each manager's 13F, not the share of Sei Investments Company the manager owns.