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 2024
Institutional positions in SEI Investments Co as of Mar 31, 2024. 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
- 475
- −10 vs. Q4 2023
- Shares held
- 94.2M
- +1.49M (+1.6%) vs. Q4 2023
- Total value
- $6.77B
- +$876.6M (+14.9%) vs. Q4 2023
- New holders
- 47
- 141 more added
- Sold out
- 57
- 185 more reduced
6 institutions that held it in Q4 2023 haven't filed for Q1 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2023: 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 2024
Shares, value and share of portfolio for each institution holding SEI Investments Co; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 11,843,595 | $851.6M | 0.02% | −44,924−0.4% | Reduced |
| BlackRock Inc. | 11,714,580 | $842.3M | 0.02% | +551,844+4.9% | Added |
| Loomis Sayles & Co L P | 9,367,304 | $673.5M | 0.96% | −123,943−1.3% | Reduced |
| Morgan Stanley | 5,949,459 | $427.8M | 0.03% | +8,378+0.1% | Added |
| State Street Corp | 5,822,092 | $418.6M | 0.02% | −129,799−2.2% | Reduced |
| Beutel, Goodman & Co Ltd. | 4,018,347 | $288.9M | 1.49% | −1,6320.0% | Reduced |
| Bank of America Corp | 3,049,728 | $219.3M | 0.02% | +34,101+1.1% | Added |
| Invesco Ltd. | 2,371,421 | $170.5M | 0.04% | +1,020,957+75.6% | Added |
| Geode Capital Management, LLC | 2,100,876 | $150.8M | 0.01% | +137,194+7.0% | Added |
| Royce & Associates LP | 1,464,385 | $105.3M | 0.94% | +1,816+0.1% | Added |
| Boston Trust Walden Corp | 1,300,080 | $93.5M | 0.67% | −14,885−1.1% | Reduced |
| Dimensional Fund Advisors LP | 1,157,680 | $83.2M | 0.02% | −7,222−0.6% | Reduced |
| Bank of New York Mellon Corp | 1,149,629 | $82.7M | 0.02% | −41,608−3.5% | Reduced |
| Citadel Advisors LLC | 1,084,130 | $77.9M | 0.08% | −546,453−33.5% | Reduced |
| First Trust Advisors LP | 1,053,365 | $75.7M | 0.08% | +899,520+584.7% | Added |
| Northern Trust Corp | 930,834 | $66.9M | 0.01% | −114,347−10.9% | Reduced |
| Great West Life Assurance Co | 912,565 | $65.7M | 0.13% | −621,740−40.5% | Reduced |
| Legal & General Group Plc | 892,791 | $64.2M | 0.02% | +8,473+1.0% | Added |
| Tandem Investment Advisors, Inc. | 721,270 | $51.9M | 2.01% | −214,207−22.9% | Reduced |
| Brown Advisory Inc | 698,726 | $50.2M | 0.07% | +6,389+0.9% | Added |
| Natixis Advisors, L.P. | 678,329 | $48.8M | 0.11% | +1,795+0.3% | Added |
| Charles Schwab Investment Management Inc | 652,395 | $46.9M | 0.01% | −3,023−0.5% | Reduced |
| Azora Capital LP | 620,782 | $44.6M | 3.23% | +620,782 | New |
| Royal Bank of Canada | 549,447 | $39.5M | 0.01% | −86,133−13.6% | Reduced |
| Caisse de Depot Et Placement du Quebec | 528,453 | $38.0M | 0.09% | +291,920+123.4% | Added |
| Raymond James & Associates | 500,573 | $36.0M | 0.02% | +23,087+4.8% | Added |
| ProShare Advisors LLC | 462,313 | $33.2M | 0.09% | −80,798−14.9% | Reduced |
| Thrivent Financial for Lutherans | 443,052 | $31.9M | 0.06% | +183,948+71.0% | Added |
| JPMorgan Chase & Co | 436,385 | $31.4M | 0.00% | +2,928+0.7% | Added |
| Acadian Asset Management LLC | 435,054 | $31.3M | 0.11% | −16,188−3.6% | Reduced |
| Ophir Asset Management Pty Ltd | 415,255 | $29.9M | 5.23% | +415,255 | New |
| UBS Asset Management Americas Inc | 410,722 | $29.5M | 0.01% | −157,215−27.7% | Reduced |
| KBC Group NV | 384,420 | $27.6M | 0.09% | +124,610+48.0% | Added |
| Principal Financial Group Inc | 384,371 | $27.6M | 0.02% | +8,222+2.2% | Added |
| HSBC Holdings PLC | 379,608 | $27.3M | 0.02% | −171,866−31.2% | Reduced |
| Ameriprise Financial Inc | 377,099 | $27.1M | 0.01% | −18,595−4.7% | Reduced |
| Envestnet Asset Management Inc | 376,716 | $27.1M | 0.01% | −9,960−2.6% | Reduced |
| Deutsche Bank AG | 360,820 | $25.9M | 0.01% | +152,635+73.3% | Added |
| Rhumbline Advisers | 344,375 | $24.8M | 0.02% | −2,169−0.6% | Reduced |
| AQR Capital Management LLC | 325,981 | $23.4M | 0.04% | +21,269+7.0% | Added |
| Qube Research & Technologies Ltd | 320,290 | $23.0M | 0.04% | −145,949−31.3% | Reduced |
| Norges Bank | 316,012 | $22.7M | 0.00% | −190,064−37.6% | Reduced |
| American Capital Management Inc | 305,609 | $22.0M | 0.70% | −1,339−0.4% | Reduced |
| American Century Companies Inc | 289,827 | $20.8M | 0.01% | +177,035+157.0% | Added |
| Millennium Management LLC | 287,212 | $20.7M | 0.02% | −288,273−50.1% | Reduced |
| JLB & Associates Inc | 286,443 | $20.6M | 2.74% | −2,707−0.9% | Reduced |
| Retirement Systems of Alabama | 284,188 | $20.4M | 0.08% | −600.0% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 279,950 | $20.1M | 0.01% | −2,605−0.9% | Reduced |
| Renaissance Technologies LLC | 274,526 | $19.7M | 0.03% | +49,400+21.9% | Added |
| Nuveen Asset Management, LLC | 270,285 | $19.4M | 0.01% | −2,331−0.9% | Reduced |
| Two Sigma Advisers, LP | 258,900 | $18.6M | 0.04% | −22,400−8.0% | Reduced |
| Barclays PLC | 257,491 | $18.5M | 0.01% | +11,476+4.7% | Added |
| Arrowstreet Capital, Limited Partnership | 253,276 | $18.2M | 0.02% | +119,856+89.8% | Added |
| New York State Common Retirement Fund | 244,939 | $17.6M | 0.02% | −7,434−2.9% | Reduced |
| Amundi | 264,044 | $17.4M | 0.01% | −115,952−30.5% | Reduced |
| Two Sigma Investments, LP | 232,290 | $16.7M | 0.04% | −23,431−9.2% | Reduced |
| FMR LLC | 225,128 | $16.2M | 0.00% | +35,857+18.9% | Added |
| Franklin Resources Inc | 223,814 | $16.1M | 0.01% | +131,215+141.7% | Added |
| Goldman Sachs Group Inc | 221,101 | $15.9M | 0.00% | −21,020−8.7% | Reduced |
| Leith Wheeler Investment Counsel Ltd. | 217,306 | $15.6M | 1.52% | +200+0.1% | Added |
| Citigroup Inc | 215,640 | $15.5M | 0.02% | −44,356−17.1% | Reduced |
| Credit Suisse AG | 214,209 | $15.4M | 0.01% | +44,587+26.3% | Added |
| Interval Partners, LP | 201,034 | $14.5M | 0.55% | +18,787+10.3% | Added |
| State of Alaska, Department of Revenue | 198,835 | $14.3M | 0.16% | 00.0% | Unchanged |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 197,111 | $14.2M | 0.04% | +197,111 | New |
| PGGM Investments | 195,352 | $14.0M | 0.20% | 00.0% | Unchanged |
| Man Group plc | 188,200 | $13.5M | 0.04% | −3,138−1.6% | Reduced |
| Vestcor Inc | 188,149 | $13.5M | 0.46% | −3,247−1.7% | Reduced |
| TD Asset Management Inc | 184,146 | $13.2M | 0.01% | −2,696−1.4% | Reduced |
| Voloridge Investment Management, LLC | 173,567 | $12.5M | 0.05% | +5,659+3.4% | Added |
| Markel Group Inc.SuperinvestorMarkel Group | 173,200 | $12.5M | 0.12% | 00.0% | Unchanged |
| Korea Investment CORP | 172,126 | $12.4M | 0.03% | +74,056+75.5% | Added |
| Prana Capital Management, LP | 167,491 | $12.0M | 0.54% | +64,579+62.8% | Added |
| California Public Employees Retirement System | 165,652 | $11.9M | 0.01% | −7,920−4.6% | Reduced |
| APG Asset Management N.V. | 178,516 | $11.9M | 0.02% | +13,900+8.4% | Added |
| Alliancebernstein L.P. | 164,947 | $11.9M | 0.00% | +16,145+10.8% | Added |
| Teacher Retirement System of Texas | 161,135 | $11.6M | 0.07% | −4,467−2.7% | Reduced |
| Danske Bank A/S | 156,408 | $11.2M | 0.04% | +156,408 | New |
| California State Teachers Retirement System | 148,490 | $10.7M | 0.01% | −6,112−4.0% | Reduced |
| Truist Financial Corp | 147,331 | $10.6M | 0.02% | −5,064−3.3% | Reduced |
| Victory Capital Management Inc | 146,372 | $10.5M | 0.01% | +18,929+14.9% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 145,536 | $10.4M | 0.02% | +58,808+67.8% | Added |
| New York State Teachers Retirement System | 138,238 | $9.94M | 0.02% | −100−0.1% | Reduced |
| Alps Advisors Inc | 135,267 | $9.73M | 0.07% | +20,414+17.8% | Added |
| American International Group, Inc. | 131,974 | $9.49M | 0.03% | −3,116−2.3% | Reduced |
| UBS Group AG | 131,087 | $9.43M | 0.00% | +9,118+7.5% | Added |
| Schonfeld Strategic Advisors LLC | 122,680 | $8.82M | 0.07% | −23,650−16.2% | Reduced |
| Pinebridge Investments, L.P. | 121,638 | $8.74M | 0.07% | −15,929−11.6% | Reduced |
| State Board of Administration of Florida Retirement System | 151,227 | $8.70M | 0.02% | +9,443+6.7% | Added |
| Advisor Group Holdings, Inc. | 120,284 | $8.65M | 0.02% | −4,305−3.5% | Reduced |
| Bank of Montreal | 119,590 | $8.61M | 0.00% | +6,543+5.8% | Added |
| Allianz Asset Management GmbH | 115,498 | $8.30M | 0.01% | +3,740+3.3% | Added |
| Russell Investments Group, Ltd. | 115,367 | $8.30M | 0.01% | +20,533+21.7% | Added |
| Sienna Gestion | 114,048 | $8.20M | 0.75% | +114,048 | New |
| Robeco Institutional Asset Management B.V. | 113,867 | $8.19M | 0.02% | +54,992+93.4% | Added |
| Abn Amro Investment Solutions | 109,195 | $7.85M | 0.14% | −6,260−5.4% | Reduced |
| Crestwood Advisors Group LLC | 108,764 | $7.82M | 0.17% | +488+0.5% | Added |
| Martingale Asset Management L P | 97,113 | $6.98M | 0.14% | +97,113 | New |
| Achmea Investment Management B.V. | 95,939 | $6.90M | 0.13% | 00.0% | Unchanged |
| Andra AP-fonden | 93,300 | $6.71M | 0.12% | +93,300 | New |