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, Q4 2023
Institutional positions in SEI Investments Co as of Dec 31, 2023. 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
- 491
- +37 vs. Q3 2023
- Shares held
- 92.8M
- −426.6K (−0.5%) vs. Q3 2023
- Total value
- $5.90B
- +$270.9M (+4.8%) vs. Q3 2023
- New holders
- 69
- 142 more added
- Sold out
- 32
- 182 more reduced
8 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2023
Shares, value and share of portfolio for each institution holding SEI Investments Co; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 11,888,519 | $755.5M | 0.02% | −94,942−0.8% | Reduced |
| BlackRock Inc. | 11,162,736 | $709.4M | 0.02% | −197,206−1.7% | Reduced |
| Loomis Sayles & Co L P | 9,491,247 | $603.2M | 0.92% | −121,927−1.3% | Reduced |
| State Street Corp | 5,951,891 | $380.9M | 0.02% | +155,520+2.7% | Added |
| Morgan Stanley | 5,941,081 | $377.6M | 0.03% | −7,577−0.1% | Reduced |
| Beutel, Goodman & Co Ltd. | 4,019,979 | $255.5M | 1.35% | −16,395−0.4% | Reduced |
| Bank of America Corp | 3,015,627 | $191.6M | 0.02% | −27,059−0.9% | Reduced |
| Geode Capital Management, LLC | 1,963,682 | $124.6M | 0.01% | +23,053+1.2% | Added |
| Citadel Advisors LLC | 1,630,583 | $103.6M | 0.10% | +332,840+25.6% | Added |
| Great West Life Assurance Co | 1,534,305 | $96.9M | 0.21% | −44,669−2.8% | Reduced |
| Royce & Associates LP | 1,462,569 | $92.9M | 0.86% | +34,272+2.4% | Added |
| Invesco Ltd. | 1,350,464 | $85.8M | 0.02% | +224,805+20.0% | Added |
| Boston Trust Walden Corp | 1,314,965 | $83.6M | 0.63% | +24,621+1.9% | Added |
| Bank of New York Mellon Corp | 1,191,237 | $75.7M | 0.02% | +9,152+0.8% | Added |
| Dimensional Fund Advisors LP | 1,164,902 | $74.0M | 0.02% | −12,869−1.1% | Reduced |
| Northern Trust Corp | 1,045,181 | $66.4M | 0.01% | −98,596−8.6% | Reduced |
| Tandem Investment Advisors, Inc. | 935,477 | $59.5M | 2.38% | −282,790−23.2% | Reduced |
| Legal & General Group Plc | 884,318 | $56.2M | 0.02% | −68,046−7.1% | Reduced |
| Brown Advisory Inc | 692,337 | $44.0M | 0.06% | +10,700+1.6% | Added |
| Natixis Advisors, L.P. | 676,534 | $43.0M | 0.11% | −27,476−3.9% | Reduced |
| Charles Schwab Investment Management Inc | 655,418 | $41.7M | 0.01% | +12,453+1.9% | Added |
| Royal Bank of Canada | 635,580 | $40.4M | 0.01% | −13,888−2.1% | Reduced |
| Millennium Management LLC | 575,485 | $36.6M | 0.03% | +9,239+1.6% | Added |
| UBS Asset Management Americas Inc | 567,937 | $36.1M | 0.01% | −130,691−18.7% | Reduced |
| HSBC Holdings PLC | 551,474 | $35.0M | 0.03% | +4,212+0.8% | Added |
| ProShare Advisors LLC | 543,111 | $34.5M | 0.11% | −3,594−0.7% | Reduced |
| Norges Bank | 506,076 | $32.2M | 0.01% | −124,552−19.8% | Reduced |
| Raymond James & Associates | 477,486 | $30.3M | 0.02% | +2,650+0.6% | Added |
| Qube Research & Technologies Ltd | 466,239 | $29.6M | 0.07% | +62,225+15.4% | Added |
| Acadian Asset Management LLC | 451,242 | $28.7M | 0.11% | −26,739−5.6% | Reduced |
| JPMorgan Chase & Co | 433,457 | $27.5M | 0.00% | +138,417+46.9% | Added |
| Ameriprise Financial Inc | 395,694 | $25.1M | 0.01% | −201,654−33.8% | Reduced |
| Envestnet Asset Management Inc | 386,676 | $24.6M | 0.01% | +5,639+1.5% | Added |
| Principal Financial Group Inc | 376,149 | $23.9M | 0.02% | −5,100−1.3% | Reduced |
| Amundi | 379,996 | $23.7M | 0.01% | +72,275+23.5% | Added |
| Rhumbline Advisers | 346,544 | $22.0M | 0.02% | +3,463+1.0% | Added |
| American Capital Management Inc | 306,948 | $19.5M | 0.67% | −10,289−3.2% | Reduced |
| AQR Capital Management LLC | 304,712 | $19.4M | 0.04% | +9,222+3.1% | Added |
| JLB & Associates Inc | 289,150 | $18.4M | 2.64% | +1,834+0.6% | Added |
| Retirement Systems of Alabama | 284,248 | $18.1M | 0.08% | +11,948+4.4% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 282,555 | $18.0M | 0.01% | −34,938−11.0% | Reduced |
| Two Sigma Advisers, LP | 281,300 | $17.9M | 0.04% | +226,400+412.4% | Added |
| Nuveen Asset Management, LLC | 272,616 | $17.3M | 0.01% | −13,775−4.8% | Reduced |
| Citigroup Inc | 259,996 | $16.5M | 0.02% | +39,280+17.8% | Added |
| KBC Group NV | 259,810 | $16.5M | 0.06% | +33,357+14.7% | Added |
| Thrivent Financial for Lutherans | 259,104 | $16.5M | 0.04% | +4,158+1.6% | Added |
| Two Sigma Investments, LP | 255,721 | $16.3M | 0.04% | +182,465+249.1% | Added |
| New York State Common Retirement Fund | 252,373 | $16.0M | 0.02% | −11,064−4.2% | Reduced |
| Barclays PLC | 246,015 | $15.6M | 0.01% | −1,256−0.5% | Reduced |
| Goldman Sachs Group Inc | 242,121 | $15.4M | 0.00% | −126,424−34.3% | Reduced |
| Caisse de Depot Et Placement du Quebec | 236,533 | $15.0M | 0.04% | +26,405+12.6% | Added |
| Renaissance Technologies LLC | 225,126 | $14.3M | 0.02% | −13,800−5.8% | Reduced |
| Leith Wheeler Investment Counsel Ltd. | 217,106 | $13.8M | 1.51% | −2,800−1.3% | Reduced |
| Deutsche Bank AG | 208,185 | $13.2M | 0.01% | +47,862+29.9% | Added |
| State of Alaska, Department of Revenue | 198,835 | $12.6M | 0.15% | −1,150−0.6% | Reduced |
| PGGM Investments | 195,352 | $12.4M | 0.19% | 00.0% | Unchanged |
| Vestcor Inc | 191,396 | $12.2M | 0.41% | −520.0% | Reduced |
| Man Group plc | 191,338 | $12.2M | 0.03% | – | – |
| FMR LLC | 189,271 | $12.0M | 0.00% | −171,461−47.5% | Reduced |
| TD Asset Management Inc | 186,842 | $11.9M | 0.01% | +226+0.1% | Added |
| Interval Partners, LP | 182,247 | $11.6M | 0.50% | +4,865+2.7% | Added |
| California Public Employees Retirement System | 173,572 | $11.0M | 0.01% | −6,196−3.4% | Reduced |
| Markel Group Inc.SuperinvestorMarkel Group | 173,200 | $11.0M | 0.12% | 00.0% | Unchanged |
| Schroder Investment Management Group | 171,346 | $10.9M | 0.01% | −24,427−12.5% | Reduced |
| Credit Suisse AG | 169,622 | $10.8M | 0.01% | −4,728−2.7% | Reduced |
| Voloridge Investment Management, LLC | 167,908 | $10.7M | 0.04% | +72,140+75.3% | Added |
| Teacher Retirement System of Texas | 165,602 | $10.5M | 0.07% | −8,293−4.8% | Reduced |
| Balyasny Asset Management LLC | 165,014 | $10.5M | 0.03% | +65,740+66.2% | Added |
| California State Teachers Retirement System | 154,602 | $9.82M | 0.01% | −5,670−3.5% | Reduced |
| First Trust Advisors LP | 153,845 | $9.78M | 0.01% | +8,222+5.6% | Added |
| Truist Financial Corp | 152,395 | $9.68M | 0.02% | −1,819−1.2% | Reduced |
| APG Asset Management N.V. | 164,616 | $9.47M | 0.02% | +17,400+11.8% | Added |
| Alliancebernstein L.P. | 148,802 | $9.46M | 0.00% | +2,689+1.8% | Added |
| Schonfeld Strategic Advisors LLC | 146,330 | $9.30M | 0.08% | +57,759+65.2% | Added |
| State Board of Administration of Florida Retirement System | 141,784 | $9.01M | 0.02% | +390.0% | Added |
| New York State Teachers Retirement System | 138,338 | $8.79M | 0.02% | +9,393+7.3% | Added |
| Pinebridge Investments, L.P. | 137,567 | $8.74M | 0.08% | −12,147−8.1% | Reduced |
| American International Group, Inc. | 135,090 | $8.58M | 0.04% | −6,644−4.7% | Reduced |
| Arrowstreet Capital, Limited Partnership | 133,420 | $8.48M | 0.01% | −15,013−10.1% | Reduced |
| Bridgewater Associates, LP | 132,836 | $8.44M | 0.05% | −66,215−33.3% | Reduced |
| Victory Capital Management Inc | 127,443 | $8.10M | 0.01% | +2,934+2.4% | Added |
| Advisor Group Holdings, Inc. | 124,589 | $7.92M | 0.01% | −123,951−49.9% | Reduced |
| UBS Group AG | 121,969 | $7.75M | 0.00% | −49,385−28.8% | Reduced |
| Abn Amro Investment Solutions | 115,455 | $7.34M | 0.13% | −3,635−3.1% | Reduced |
| Alps Advisors Inc | 114,853 | $7.30M | 0.06% | +16,143+16.4% | Added |
| Bank of Nova Scotia | 114,840 | $7.30M | 0.01% | +75,358+190.9% | Added |
| Bank of Montreal | 113,047 | $7.26M | 0.00% | −199,487−63.8% | Reduced |
| American Century Companies Inc | 112,792 | $7.17M | 0.00% | −10,884−8.8% | Reduced |
| Allianz Asset Management GmbH | 111,758 | $7.10M | 0.01% | +5,337+5.0% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 110,000 | $6.99M | 0.02% | +110,000 | New |
| Crestwood Advisors Group LLC | 108,276 | $6.88M | 0.16% | −116,141−51.8% | Reduced |
| Hahn Capital Management LLC | 104,906 | $6.67M | 2.67% | −6,668−6.0% | Reduced |
| Prana Capital Management, LP | 102,912 | $6.54M | 0.38% | +39,809+63.1% | Added |
| Korea Investment CORP | 98,070 | $6.23M | 0.02% | +59,784+156.2% | Added |
| State of Wisconsin Investment Board | 97,713 | $6.21M | 0.02% | −19,777−16.8% | Reduced |
| Achmea Investment Management B.V. | 95,939 | $6.10M | 0.13% | +38,942+68.3% | Added |
| Russell Investments Group, Ltd. | 94,834 | $6.03M | 0.01% | +24,055+34.0% | Added |
| Cubist Systematic Strategies, LLC | 94,797 | $6.02M | 0.07% | +94,793+2,369,825.0% | Added |
| Trexquant Investment LP | 94,524 | $6.01M | 0.14% | +71,701+314.2% | Added |
| Franklin Resources Inc | 92,599 | $5.88M | 0.00% | −11,356−10.9% | Reduced |