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, Q1 2025
Institutional positions in SEI Investments Co as of Mar 31, 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
- 546
- +16 vs. Q4 2024
- Shares held
- 93.7M
- +2.84M (+3.1%) vs. Q4 2024
- Total value
- $7.27B
- −$226.7M (−3.0%) vs. Q4 2024
- New holders
- 68
- 192 more added
- Sold out
- 52
- 186 more reduced
10 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding SEI Investments Co; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 11,461,187 | $889.7M | 0.02% | −139,086−1.2% | Reduced |
| BlackRock, Inc. | 11,370,412 | $882.7M | 0.02% | −132,245−1.1% | Reduced |
| Loomis Sayles & Co L P | 8,720,051 | $676.9M | 0.98% | −117,256−1.3% | Reduced |
| Morgan Stanley | 5,795,918 | $449.9M | 0.03% | +167,485+3.0% | Added |
| State Street Corp | 5,737,811 | $445.4M | 0.02% | +55,158+1.0% | Added |
| Bank of America Corp | 3,027,579 | $235.0M | 0.02% | +180,925+6.4% | Added |
| Geode Capital Management, LLC | 2,687,583 | $208.3M | 0.02% | +106,846+4.1% | Added |
| Beutel, Goodman & Co Ltd. | 2,675,610 | $207.7M | 1.20% | +11,741+0.4% | Added |
| Dimensional Fund Advisors LP | 1,732,511 | $134.5M | 0.03% | +111,065+6.8% | Added |
| Invesco Ltd. | 1,702,962 | $132.2M | 0.03% | −552,075−24.5% | Reduced |
| First Trust Advisors LP | 1,582,545 | $122.9M | 0.11% | +1,099,970+227.9% | Added |
| Boston Trust Walden Corp | 1,325,479 | $102.9M | 0.75% | +19,150+1.5% | Added |
| Royce & Associates LP | 1,280,192 | $99.4M | 1.08% | −77,047−5.7% | Reduced |
| Bank of New York Mellon Corp | 1,132,943 | $88.0M | 0.02% | −38,800−3.3% | Reduced |
| Northern Trust Corp | 1,053,848 | $81.8M | 0.01% | −14,333−1.3% | Reduced |
| FMR LLC | 914,241 | $71.0M | 0.00% | −318,984−25.9% | Reduced |
| UBS Asset Management Americas Inc | 801,056 | $62.2M | 0.02% | +45,019+6.0% | Added |
| Millennium Management LLC | 783,619 | $60.8M | 0.06% | +605,252+339.3% | Added |
| Amundi | 782,035 | $57.5M | 0.02% | +543,753+228.2% | Added |
| Caisse de Depot Et Placement du Quebec | 737,247 | $57.2M | 0.12% | +204,911+38.5% | Added |
| Charles Schwab Investment Management Inc | 671,672 | $52.1M | 0.01% | +3,339+0.5% | Added |
| Lord, Abbett & Co. LLC | 666,918 | $51.8M | 0.18% | +666,918 | New |
| Royal Bank of Canada | 625,919 | $48.6M | 0.01% | +238,721+61.7% | Added |
| Voloridge Investment Management, LLC | 577,695 | $44.8M | 0.17% | +119,487+26.1% | Added |
| Franklin Resources Inc | 544,506 | $42.3M | 0.01% | +98,098+22.0% | Added |
| Natixis Advisors, L.P. | 538,464 | $41.8M | 0.08% | −10,182−1.9% | Reduced |
| Norges Bank | 536,378 | $41.6M | 0.01% | −45,691−7.8% | Reduced |
| Raymond James Financial Inc | 532,195 | $41.3M | 0.02% | +16,337+3.2% | Added |
| American Capital Management Inc | 520,906 | $40.4M | 1.65% | +23,706+4.8% | Added |
| Ameriprise Financial Inc | 498,088 | $38.7M | 0.01% | +22,296+4.7% | Added |
| JPMorgan Chase & Co | 488,279 | $37.9M | 0.00% | +29,398+6.4% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 468,327 | $36.4M | 0.10% | +79,005+20.3% | Added |
| Legal & General Group Plc | 402,270 | $31.2M | 0.01% | +2,200+0.5% | Added |
| AQR Capital Management LLC | 406,249 | $31.0M | 0.03% | −13,431−3.2% | Reduced |
| UBS Group AG | 398,936 | $31.0M | 0.01% | +19,489+5.1% | Added |
| Envestnet Asset Management Inc | 395,285 | $30.7M | 0.01% | −11,295−2.8% | Reduced |
| Prana Capital Management, LP | 383,961 | $29.8M | 1.21% | +84,948+28.4% | Added |
| Danske Bank A/S | 374,235 | $29.1M | 0.09% | +143,338+62.1% | Added |
| Azora Capital LP | 371,665 | $28.9M | 1.96% | +371,665 | New |
| Aware Super Pty Ltd as trustee of Aware Super | 363,058 | $28.2M | 0.48% | +75,593+26.3% | Added |
| ProShare Advisors LLC | 361,680 | $28.1M | 0.06% | −89,674−19.9% | Reduced |
| Man Group plc | 353,576 | $27.4M | 0.08% | +147,334+71.4% | Added |
| HSBC Holdings PLC | 350,514 | $27.2M | 0.02% | −13,305−3.7% | Reduced |
| Rhumbline Advisers | 336,554 | $26.1M | 0.02% | −1,438−0.4% | Reduced |
| Teacher Retirement System of Texas | 317,599 | $24.7M | 0.10% | +58,643+22.6% | Added |
| Alps Advisors Inc | 278,328 | $21.6M | 0.13% | +24,495+9.7% | Added |
| JLB & Associates Inc | 276,604 | $21.5M | 2.99% | −4,582−1.6% | Reduced |
| Retirement Systems of Alabama | 276,324 | $21.5M | 0.08% | −1,795−0.6% | Reduced |
| Nuveen, LLC | 275,763 | $21.4M | 0.01% | +275,763 | New |
| Arrowstreet Capital, Limited Partnership | 273,979 | $21.3M | 0.02% | −29,099−9.6% | Reduced |
| KBC Group NV | 273,206 | $21.2M | 0.07% | −94,097−25.6% | Reduced |
| Interval Partners, LP | 252,191 | $19.6M | 0.69% | +52,718+26.4% | Added |
| Acadian Asset Management LLC | 251,081 | $19.5M | 0.06% | −99,664−28.4% | Reduced |
| Jane Street Group, LLC | 242,339 | $18.8M | 0.03% | +152,567+169.9% | Added |
| Qube Research & Technologies Ltd | 238,493 | $18.5M | 0.03% | −33,009−12.2% | Reduced |
| Martingale Asset Management L P | 231,643 | $18.0M | 0.46% | +972+0.4% | Added |
| Principal Financial Group Inc | 231,039 | $17.9M | 0.01% | −3,033−1.3% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 220,410 | $17.1M | 0.01% | +877+0.4% | Added |
| Goldman Sachs Group Inc | 219,699 | $17.1M | 0.00% | −2,785−1.3% | Reduced |
| Deutsche Bank AG | 216,212 | $16.8M | 0.01% | +63,810+41.9% | Added |
| Jacobs Levy Equity Management, Inc | 208,353 | $16.2M | 0.06% | +208,353 | New |
| Crestwood Advisors Group LLC | 207,973 | $16.1M | 0.31% | −1,059−0.5% | Reduced |
| Leith Wheeler Investment Counsel Ltd. | 205,809 | $16.0M | 1.11% | +2,592+1.3% | Added |
| State of Alaska, Department of Revenue | 199,330 | $15.5M | 0.18% | +125+0.1% | Added |
| Renaissance Technologies LLC | 197,826 | $15.4M | 0.02% | +127,400+180.9% | Added |
| Allianz Asset Management GmbH | 193,753 | $15.0M | 0.02% | −36,748−15.9% | Reduced |
| Los Angeles Capital Management LLC | 186,416 | $14.5M | 0.06% | −137,320−42.4% | Reduced |
| Russell Investments Group, Ltd. | 179,622 | $13.9M | 0.02% | +72,730+68.0% | Added |
| Vestcor Inc | 176,788 | $13.7M | 0.46% | −8,164−4.4% | Reduced |
| Victory Capital Management Inc | 174,651 | $13.6M | 0.01% | +10,603+6.5% | Added |
| Markel Group Inc.SuperinvestorMarkel Group | 173,200 | $13.4M | 0.12% | 00.0% | Unchanged |
| KLP Kapitalforvaltning AS | 162,300 | $12.6M | 0.06% | 00.0% | Unchanged |
| California Public Employees Retirement System | 159,267 | $12.4M | 0.01% | −834−0.5% | Reduced |
| Achmea Investment Management B.V. | 154,627 | $12.0M | 0.17% | +71,767+86.6% | Added |
| Schroder Investment Management Group | 149,103 | $11.5M | 0.01% | +2,868+2.0% | Added |
| Bridgewater Associates, LP | 146,580 | $11.4M | 0.05% | +103,660+241.5% | Added |
| TD Asset Management Inc | 144,964 | $11.3M | 0.01% | +5,590+4.0% | Added |
| State Board of Administration of Florida Retirement System | 142,437 | $11.1M | 0.02% | 00.0% | Unchanged |
| Foyston, Gordon, & Payne Inc | 141,742 | $11.0M | 2.72% | +22,019+18.4% | Added |
| Candriam Luxembourg S.C.A. | 135,207 | $10.5M | 0.07% | +95,245+238.3% | Added |
| Bank of Montreal | 134,619 | $10.5M | 0.01% | −3,532−2.6% | Reduced |
| California State Teachers Retirement System | 131,961 | $10.2M | 0.01% | +1,406+1.1% | Added |
| Thrivent Financial for Lutherans | 131,408 | $10.2M | 0.02% | −40,725−23.7% | Reduced |
| Advisor Group Holdings, Inc. | 130,212 | $10.1M | 0.02% | +7,308+5.9% | Added |
| Alliancebernstein L.P. | 127,388 | $9.89M | 0.00% | −41,746−24.7% | Reduced |
| Pinebridge Investments, L.P. | 124,517 | $9.67M | 0.08% | −8,564−6.4% | Reduced |
| New York State Teachers Retirement System | 117,969 | $9.16M | 0.02% | −546−0.5% | Reduced |
| Truist Financial Corp | 115,642 | $8.98M | 0.01% | −4,349−3.6% | Reduced |
| Barclays PLC | 115,587 | $8.97M | 0.00% | −29,791−20.5% | Reduced |
| Hahn Capital Management LLC | 114,963 | $8.92M | 4.32% | −11,947−9.4% | Reduced |
| Korea Investment CORP | 114,684 | $8.90M | 0.02% | −74,800−39.5% | Reduced |
| Abn Amro Investment Solutions | 110,600 | $8.59M | 0.18% | +22,685+25.8% | Added |
| Banco Santander, S.A. | 107,467 | $8.34M | 0.09% | +65,897+158.5% | Added |
| Holocene Advisors, LP | 106,626 | $8.28M | 0.02% | +31,499+41.9% | Added |
| Corebridge Financial, Inc. | 106,499 | $8.27M | 0.05% | −4,372−3.9% | Reduced |
| King Luther Capital Management Corp | 105,371 | $8.18M | 0.04% | +73,308+228.6% | Added |
| ExodusPoint Capital Management, LP | 103,604 | $8.04M | 0.11% | +43,056+71.1% | Added |
| Robeco Institutional Asset Management B.V. | 102,105 | $7.93M | 0.02% | +1,020+1.0% | Added |
| American Century Companies Inc | 99,318 | $7.71M | 0.00% | −104,434−51.3% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 97,573 | $7.57M | 0.02% | −31,034−24.1% | Reduced |