SEI Investments Co
SEIC- Exchange
- Nasdaq
- Industry
- Security Brokers, Dealers & Flotation Companies
- SEC CIK
- 0000350894
In the last 90 days, SEI Investments Co insiders filed 0 open-market purchases and 10 sales; 575 institutions reported holding it in 13F filings for Q2 2026, worth $7.94B in total; Markel Group is the only superinvestor holding it.
13F holders, Q2 2025
Institutional positions in SEI Investments Co as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 564
- +26 vs. Q1 2025
- Shares held
- 90.1M
- −3.55M (−3.8%) vs. Q1 2025
- Total value
- $8.09B
- +$829.7M (+11.4%) vs. Q1 2025
- New holders
- 105
- 184 more added
- Sold out
- 79
- 197 more reduced
8 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting SEIC on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 575 | $7.94B |
| Q1 2026 | 569 | $7.06B |
| Q4 2025 | 562 | $7.31B |
| Q3 2025 | 550 | $7.51B |
| Q2 2025 | 564 | $8.09B |
| Q1 2025 | 546 | $7.27B |
| Q4 2024 | 540 | $7.52B |
| Q3 2024 | 502 | $6.35B |
| Q2 2024 | 493 | $6.02B |
| Q1 2024 | 475 | $6.77B |
| Q4 2023 | 491 | $5.90B |
| Q3 2023 | 462 | $5.63B |
| Q2 2023 | 458 | $5.53B |
| Q1 2023 | 444 | $5.36B |
| Q4 2022 | 446 | $5.45B |
| Q3 2022 | 433 | $4.63B |
| Q2 2022 | 456 | $5.18B |
| Q1 2022 | 465 | $5.81B |
| Q4 2021 | 472 | $5.94B |
| Q3 2021 | 446 | $5.73B |
| Q2 2021 | 440 | $6.04B |
| Q1 2021 | 443 | $5.97B |
Institutions, Q2 2025
Shares, value and share of portfolio for each institution holding SEI Investments Co; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Amundi | 157,857 | $14.5M | 0.01% | −624,178−79.8% | Reduced |
| Trexquant Investment LP | 163,649 | $14.7M | 0.17% | +163,649 | New |
| Markel Group Inc.SuperinvestorMarkel Group | 173,200 | $15.6M | 0.13% | 00.0% | Unchanged |
| Vestcor Inc | 174,472 | $15.7M | 0.47% | −2,316−1.3% | Reduced |
| California Public Employees Retirement System | 178,461 | $16.0M | 0.01% | +19,194+12.1% | Added |
| Treasurer of the State of North Carolina | 186,329 | $16.7M | 0.05% | +98,782+112.8% | Added |
| State of Alaska, Department of Revenue | 198,665 | $17.9M | 0.19% | −665−0.3% | Reduced |
| Leith Wheeler Investment Counsel Ltd. | 200,409 | $18.0M | 1.28% | −5,400−2.6% | Reduced |
| Crestwood Advisors Group LLC | 201,193 | $18.1M | 0.32% | −6,780−3.3% | Reduced |
| Citadel Advisors LLC | 202,576 | $18.2M | 0.02% | +202,576 | New |
| Swiss National Bank | 204,100 | $18.3M | 0.01% | +204,100 | New |
| Principal Financial Group Inc | 214,908 | $19.3M | 0.01% | −16,131−7.0% | Reduced |
| Man Group plc | 222,953 | $20.0M | 0.04% | −130,623−36.9% | Reduced |
| Martingale Asset Management L P | 228,004 | $20.5M | 0.50% | −3,639−1.6% | Reduced |
| Interval Partners, LP | 229,753 | $20.6M | 0.47% | −22,438−8.9% | Reduced |
| Nuveen, LLC | 236,776 | $21.3M | 0.01% | −38,987−14.1% | Reduced |
| Legal & General Group Plc | 241,531 | $21.7M | 0.01% | −160,739−40.0% | Reduced |
| Two Sigma Investments, LP | 249,399 | $22.4M | 0.04% | +173,705+229.5% | Added |
| JLB & Associates Inc | 268,261 | $24.1M | 3.36% | −8,343−3.0% | Reduced |
| Retirement Systems of Alabama | 274,629 | $24.7M | 0.09% | −1,695−0.6% | Reduced |
| Alps Advisors Inc | 276,449 | $24.8M | 0.14% | −1,879−0.7% | Reduced |
| Voloridge Investment Management, LLC | 285,697 | $25.7M | 0.09% | −291,998−50.5% | Reduced |
| Rhumbline Advisers | 316,381 | $28.4M | 0.02% | −20,173−6.0% | Reduced |
| Envestnet Asset Management Inc | 356,037 | $32.0M | 0.01% | −39,248−9.9% | Reduced |
| Arrowstreet Capital, Limited Partnership | 366,742 | $33.0M | 0.02% | +92,763+33.9% | Added |
| JPMorgan Chase & Co | 372,028 | $33.4M | 0.00% | −116,251−23.8% | Reduced |
| Jane Street Group, LLC | 378,372 | $34.0M | 0.05% | +136,033+56.1% | Added |
| UBS Group AG | 381,094 | $34.2M | 0.01% | −17,842−4.5% | Reduced |
| AQR Capital Management LLC | 392,505 | $35.3M | 0.03% | −13,744−3.4% | Reduced |
| Jupiter Asset Management Ltd | 417,205 | $37.5M | 0.31% | +417,205 | New |
| Qube Research & Technologies Ltd | 420,079 | $37.7M | 0.05% | +181,586+76.1% | Added |
| Renaissance Technologies LLC | 421,926 | $37.9M | 0.05% | +224,100+113.3% | Added |
| Goldman Sachs Group Inc | 423,894 | $38.1M | 0.01% | +204,195+92.9% | Added |
| Prana Capital Management, LP | 442,288 | $39.7M | 1.44% | +58,327+15.2% | Added |
| ProShare Advisors LLC | 452,154 | $40.6M | 0.08% | +90,474+25.0% | Added |
| American Capital Management Inc | 463,776 | $41.7M | 1.73% | −57,130−11.0% | Reduced |
| Natixis Advisors, L.P. | 529,634 | $47.6M | 0.08% | −8,830−1.6% | Reduced |
| Raymond James Financial Inc | 542,591 | $48.8M | 0.02% | +10,396+2.0% | Added |
| Franklin Resources Inc | 545,359 | $49.0M | 0.01% | +853+0.2% | Added |
| Millennium Management LLC | 581,434 | $52.2M | 0.05% | −202,185−25.8% | Reduced |
| Ameriprise Financial Inc | 594,661 | $53.4M | 0.01% | +96,573+19.4% | Added |
| Norges Bank | 619,682 | $55.7M | 0.01% | +83,304+15.5% | Added |
| Charles Schwab Investment Management Inc | 666,581 | $59.9M | 0.01% | −5,091−0.8% | Reduced |
| Azora Capital LP | 777,952 | $69.9M | 3.16% | +406,287+109.3% | Added |
| FMR LLC | 838,078 | $75.3M | 0.00% | −76,163−8.3% | Reduced |
| UBS Asset Management Americas Inc | 861,490 | $77.4M | 0.02% | +60,434+7.5% | Added |
| Northern Trust Corp | 914,465 | $82.2M | 0.01% | −139,383−13.2% | Reduced |
| Bank of New York Mellon Corp | 1,020,339 | $91.7M | 0.02% | −112,604−9.9% | Reduced |
| Caisse de Depot Et Placement du Quebec | 1,026,054 | $92.2M | 0.20% | +288,807+39.2% | Added |
| Royal Bank of Canada | 1,123,136 | $100.9M | 0.02% | +497,217+79.4% | Added |
| Royce & Associates LP | 1,226,752 | $110.2M | 1.13% | −53,440−4.2% | Reduced |
| Boston Trust Walden Corp | 1,369,674 | $123.1M | 0.88% | +44,195+3.3% | Added |
| Lord, Abbett & Co. LLC | 1,482,849 | $133.2M | 0.43% | +815,931+122.3% | Added |
| Invesco Ltd. | 1,662,650 | $149.4M | 0.03% | −40,312−2.4% | Reduced |
| First Trust Advisors LP | 1,727,334 | $155.2M | 0.12% | +144,789+9.1% | Added |
| Dimensional Fund Advisors LP | 1,831,099 | $164.5M | 0.04% | +98,588+5.7% | Added |
| Geode Capital Management, LLC | 2,576,037 | $231.5M | 0.02% | −111,546−4.2% | Reduced |
| Beutel, Goodman & Co Ltd. | 2,600,616 | $233.7M | 1.33% | −74,994−2.8% | Reduced |
| Bank of America Corp | 3,160,636 | $284.0M | 0.02% | +133,057+4.4% | Added |
| State Street Corp | 4,745,485 | $426.4M | 0.02% | −992,326−17.3% | Reduced |
| Morgan Stanley | 5,634,328 | $506.3M | 0.03% | −161,590−2.8% | Reduced |
| Loomis Sayles & Co L P | 8,841,249 | $794.5M | 1.00% | +121,198+1.4% | Added |
| BlackRock, Inc. | 9,202,020 | $826.9M | 0.02% | −2,168,392−19.1% | Reduced |
| Vanguard Group Inc | 11,229,621 | $1.01B | 0.02% | −231,566−2.0% | Reduced |
| Activest Wealth Management | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| Aware Super Pty Ltd as trustee of Aware Super | 0 | $0 | 0.00% | −363,058−100.0% | Sold out |
| Sumitomo Mitsui Trust Holdings, Inc. | 0 | $0 | 0.00% | −220,410−100.0% | Sold out |
| Achmea Investment Management B.V. | 0 | $0 | 0.00% | −154,627−100.0% | Sold out |
| Candriam Luxembourg S.C.A. | 0 | $0 | 0.00% | −135,207−100.0% | Sold out |
| Holocene Advisors, LP | 0 | $0 | 0.00% | −106,626−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −106,499−100.0% | Sold out |
| Mitsubishi UFJ Trust & Banking Corp | 0 | $0 | 0.00% | −97,573−100.0% | Sold out |
| Zacks Investment Management | 0 | $0 | 0.00% | −89,116−100.0% | Sold out |
| Andra AP-fonden | 0 | $0 | 0.00% | −79,100−100.0% | Sold out |
| West Coast Financial LLC | 0 | $0 | 0.00% | −62,059−100.0% | Sold out |
| Vinva Investment Management Ltd | 0 | $0 | 0.00% | −48,792−100.0% | Sold out |
| PGGM Investments | 0 | $0 | 0.00% | −42,444−100.0% | Sold out |
| Railway Pension Investments Ltd | 0 | $0 | 0.00% | −39,900−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −38,744−100.0% | Sold out |
| Lansforsakringar Fondforvaltning AB (publ) | 0 | $0 | 0.00% | −35,376−100.0% | Sold out |
| Element Capital Management LLC | 0 | $0 | 0.00% | −34,813−100.0% | Sold out |
| Resona Asset Management Co.,Ltd. | 0 | $0 | 0.00% | −32,265−100.0% | Sold out |
| Fieldview Capital Management, LLC | 0 | $0 | 0.00% | −32,182−100.0% | Sold out |
| Mediolanum International Funds Ltd | 0 | $0 | 0.00% | −31,853−100.0% | Sold out |
| Bright Rock Capital Management, LLC | 0 | $0 | 0.00% | −27,600−100.0% | Sold out |
| Storebrand Asset Management AS | 0 | $0 | 0.00% | −26,904−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −26,840−100.0% | Sold out |
| TrimTabs Asset Management, LLC | 0 | $0 | 0.00% | −26,671−100.0% | Sold out |
| Skandinaviska Enskilda Banken AB (publ) | 0 | $0 | 0.00% | −25,385−100.0% | Sold out |
| Macquarie Group Ltd | 0 | $0 | 0.00% | −24,762−100.0% | Sold out |
| Forsta Ap-Fonden | 0 | $0 | 0.00% | −23,900−100.0% | Sold out |
| Oliver Luxxe Assets LLC | 0 | $0 | 0.00% | −22,606−100.0% | Sold out |
| British Columbia Investment Management Corp | 0 | $0 | 0.00% | −20,965−100.0% | Sold out |
| AlTi Global, Inc. | 0 | $0 | 0.00% | −18,991−100.0% | Sold out |
| DnB Asset Management AS | 0 | $0 | 0.00% | −18,920−100.0% | Sold out |
| Allstate Corp | 0 | $0 | 0.00% | −17,739−100.0% | Sold out |
| IFM Investors Pty Ltd | 0 | $0 | 0.00% | −16,391−100.0% | Sold out |
| Nissay Asset Management Corp | 0 | $0 | 0.00% | −13,897−100.0% | Sold out |
| FORA Capital, LLC | 0 | $0 | 0.00% | −12,758−100.0% | Sold out |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 0 | $0 | 0.00% | −12,553−100.0% | Sold out |