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, Q3 2021
Institutional positions in SEI Investments Co as of Sep 30, 2021. 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
- 446
- +12 vs. Q2 2021
- Shares held
- 96.7M
- −835.6K (−0.9%) vs. Q2 2021
- Total value
- $5.73B
- −$308.3M (−5.1%) vs. Q2 2021
- New holders
- 42
- 138 more added
- Sold out
- 30
- 160 more reduced
6 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2021: 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, Q3 2021
Shares, value and share of portfolio for each institution holding SEI Investments Co; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Worldquant Millennium Advisors LLC | 89,762 | $5.32M | 0.12% | +15,272+20.5% | Added |
| Ergoteles LLC | 88,500 | $5.25M | 0.19% | +78,520+786.8% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 84,967 | $5.04M | 0.01% | −6,224−6.8% | Reduced |
| South Dakota Investment Council | 81,981 | $4.86M | 0.09% | 00.0% | Unchanged |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 81,036 | $4.80M | 0.04% | +5,153+6.8% | Added |
| Texas Permanent School Fund | 79,313 | $4.70M | 0.06% | −9,020−10.2% | Reduced |
| State of Tennessee, Treasury Department | 78,820 | $4.67M | 0.02% | −28,998−26.9% | Reduced |
| Banco Santander, S.A. | 77,090 | $4.57M | 0.02% | 00.0% | Unchanged |
| Amalgamated Bank | 76,746 | $4.55M | 0.04% | −14,821−16.2% | Reduced |
| Holocene Advisors, LP | 75,966 | $4.50M | 0.03% | −14,897−16.4% | Reduced |
| Sepio Capital, LP | 75,900 | $4.50M | 0.38% | +408+0.5% | Added |
| Voya Investment Management LLC | 67,797 | $4.02M | 0.01% | −1,857−2.7% | Reduced |
| Redwood Investment Management, LLC | 67,571 | $4.01M | 0.57% | +12,095+21.8% | Added |
| RK Asset Management, LLC | 66,025 | $3.92M | 3.47% | 00.0% | Unchanged |
| Tudor Investment Corp Et Al | 65,221 | $3.87M | 0.08% | +65,221 | New |
| KBC Group NV | 64,137 | $3.80M | 0.01% | +1,992+3.2% | Added |
| Citadel Advisors LLC | 62,401 | $3.70M | 0.00% | −804−1.3% | Reduced |
| Aviva PLC | 62,109 | $3.68M | 0.02% | +25,749+70.8% | Added |
| Public Employees Retirement System of Ohio | 61,686 | $3.66M | 0.01% | −836−1.3% | Reduced |
| Union Heritage Capital, LLC | 61,550 | $3.65M | 1.71% | 00.0% | Unchanged |
| Jupiter Asset Management Ltd | 61,135 | $3.63M | 0.04% | +61,135 | New |
| BNP Paribas Arbitrage, SA | 60,857 | $3.61M | 0.01% | −20,549−25.2% | Reduced |
| State of New Jersey Common Pension Fund D | 60,506 | $3.59M | 0.01% | −4,583−7.0% | Reduced |
| Ingalls & Snyder LLC | 60,420 | $3.58M | 0.17% | 00.0% | Unchanged |
| Putnam Investments LLC | 60,395 | $3.58M | 0.01% | −3,496−5.5% | Reduced |
| Voloridge Investment Management, LLC | 59,888 | $3.55M | 0.02% | +2,266+3.9% | Added |
| Asset Management One Co.,Ltd. | 58,404 | $3.46M | 0.01% | +2,114+3.8% | Added |
| Bridgewater Associates, LP | 58,382 | $3.46M | 0.02% | −1,382−2.3% | Reduced |
| Parsec Financial Management, Inc. | 52,203 | $3.36M | 0.14% | −609−1.2% | Reduced |
| Oregon Public Employees Retirement Fund | 56,571 | $3.35M | 0.04% | −1,507−2.6% | Reduced |
| APG Asset Management N.V. | 63,953 | $3.27M | 0.01% | +4,400+7.4% | Added |
| Mandatum Life Insurance Co Ltd | 54,859 | $3.25M | 0.60% | 00.0% | Unchanged |
| Glenmede Trust Co NA | 54,860 | $3.25M | 0.02% | −1,860−3.3% | Reduced |
| Comerica Bank | 49,708 | $3.19M | 0.02% | −16,309−24.7% | Reduced |
| Assenagon Asset Management S.A. | 53,566 | $3.18M | 0.01% | +49,275+1,148.3% | Added |
| BBVA USA | 53,373 | $3.17M | 0.19% | −394−0.7% | Reduced |
| Price T Rowe Associates Inc | 52,907 | $3.14M | 0.00% | −4,667−8.1% | Reduced |
| Janus Henderson Group PLC | 52,187 | $3.10M | 0.00% | −2,375−4.4% | Reduced |
| Rafferty Asset Management, LLC | 51,959 | $3.08M | 0.02% | −10,069−16.2% | Reduced |
| ExodusPoint Capital Management, LP | 51,775 | $3.07M | 0.05% | +34,072+192.5% | Added |
| Pictet Asset Management SA | 51,552 | $3.06M | 0.00% | +51,552 | New |
| MetLife Investment Management | 51,508 | $3.05M | 0.03% | −7,719−13.0% | Reduced |
| CIBC Private Wealth Group, LLC | 51,370 | $3.05M | 0.01% | −1,958−3.7% | Reduced |
| O'Shares Investment Advisers, LLC | 51,109 | $3.03M | 0.22% | +51,109 | New |
| LPL Financial LLC | 50,372 | $2.99M | 0.00% | +6,000+13.5% | Added |
| Taylor Hoffman Wealth Management | 49,717 | $2.97M | 1.27% | +3,473+7.5% | Added |
| HBK Sorce Advisory LLC | 47,902 | $2.84M | 0.16% | +35,591+289.1% | Added |
| Interval Partners, LP | 47,277 | $2.80M | 0.16% | +9,842+26.3% | Added |
| Nisa Investment Advisors, LLC | 46,650 | $2.77M | 0.02% | 00.0% | Unchanged |
| West Coast Financial LLC | 46,167 | $2.74M | 0.44% | +837+1.8% | Added |
| Oppenheimer Asset Management Inc. | 42,261 | $2.51M | 0.04% | −925−2.1% | Reduced |
| Toronto Dominion Bank | 41,575 | $2.47M | 0.00% | −241−0.6% | Reduced |
| Henshaw Capital LLC | 41,254 | $2.45M | 0.15% | 00.0% | Unchanged |
| Handelsbanken Fonder AB | 40,262 | $2.39M | 0.01% | +1,900+5.0% | Added |
| Acadian Asset Management LLC | 39,761 | $2.35M | 0.01% | +14,076+54.8% | Added |
| Squarepoint Ops LLC | 39,486 | $2.34M | 0.02% | +29,334+288.9% | Added |
| Ameritas Investment Partners, Inc. | 39,381 | $2.33M | 0.09% | −3,482−8.1% | Reduced |
| Treasurer of the State of North Carolina | 38,968 | $2.31M | 0.01% | −1,061−2.7% | Reduced |
| Vontobel Holding Ltd. | 38,455 | $2.28M | 0.02% | −13,587−26.1% | Reduced |
| Wealth Alliance Advisory Group, LLC | 37,504 | $2.22M | 1.08% | 00.0% | Unchanged |
| Franklin Resources Inc | 36,692 | $2.17M | 0.00% | −5,564−13.2% | Reduced |
| Royal London Asset Management Ltd | 36,632 | $2.17M | 0.01% | −4,897−11.8% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 35,422 | $2.10M | 0.02% | −4,066−10.3% | Reduced |
| NJ State Employees Deferred Compensation Plan | 35,400 | $2.10M | 0.28% | 00.0% | Unchanged |
| Courant Investment Management LLC | 34,707 | $2.06M | 1.74% | +34,707 | New |
| IFG Advisory, LLC | 34,235 | $2.03M | 0.22% | +3,625+11.8% | Added |
| Atria Investments LLC | 34,085 | $2.02M | 0.04% | −1,266−3.6% | Reduced |
| Arizona State Retirement System | 34,066 | $2.02M | 0.02% | −414−1.2% | Reduced |
| State of Alaska, Department of Revenue | 33,377 | $1.98M | 0.02% | +688+2.1% | Added |
| Pensionfund Sabic | 32,000 | $1.90M | 0.40% | 00.0% | Unchanged |
| Johnson Investment Counsel Inc | 30,730 | $1.82M | 0.02% | 00.0% | Unchanged |
| State of Michigan Retirement System | 30,701 | $1.82M | 0.01% | −3,000−8.9% | Reduced |
| Macquarie Group Ltd | 30,017 | $1.78M | 0.00% | 00.0% | Unchanged |
| Canada Pension Plan Investment Board | 29,604 | $1.75M | 0.00% | +29,131+6,158.8% | Added |
| Nomura Asset Management Co Ltd | 28,096 | $1.67M | 0.01% | +6,566+30.5% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 28,086 | $1.67M | 0.01% | −7,653−21.4% | Reduced |
| Raymond James Financial Services Advisors, Inc. | 27,919 | $1.66M | 0.00% | −239−0.8% | Reduced |
| Bright Rock Capital Management, LLC | 27,600 | $1.64M | 0.41% | 00.0% | Unchanged |
| Louisiana State Employees Retirement System | 27,300 | $1.62M | 0.04% | −3,400−11.1% | Reduced |
| The PNC Financial Services Group, Inc. | 27,241 | $1.61M | 0.00% | +714+2.7% | Added |
| USS Investment Management Ltd | 26,941 | $1.60M | 0.01% | +26,941 | New |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 26,622 | $1.58M | 0.01% | +484+1.9% | Added |
| Moody Aldrich Partners LLC | 26,193 | $1.55M | 0.20% | +8,458+47.7% | Added |
| Morris Capital Advisors, LLC | 25,801 | $1.53M | 1.21% | 00.0% | Unchanged |
| King Luther Capital Management Corp | 25,418 | $1.51M | 0.01% | −98−0.4% | Reduced |
| Gsa Capital Partners LLP | 24,990 | $1.48M | 0.15% | +24,990 | New |
| Bank of Nova Scotia | 24,000 | $1.42M | 0.00% | +24,000 | New |
| Toroso Investments, LLC | 23,914 | $1.42M | 0.05% | +5,944+33.1% | Added |
| Gulf International Bank (UK) Ltd | 23,880 | $1.42M | 0.02% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 23,780 | $1.41M | 0.01% | −250−1.0% | Reduced |
| MUFG Securities EMEA plc | 23,200 | $1.38M | 0.02% | +23,200 | New |
| Skandinaviska Enskilda Banken AB (publ) | 23,000 | $1.36M | 0.01% | 00.0% | Unchanged |
| Oliver Luxxe Assets LLC | 22,570 | $1.34M | 0.37% | 00.0% | Unchanged |
| British Columbia Investment Management Corp | 22,500 | $1.33M | 0.01% | −296−1.3% | Reduced |
| Grantham, Mayo, Van Otterloo & Co. LLC | 22,317 | $1.32M | 0.01% | +2,500+12.6% | Added |
| Panagora Asset Management Inc | 22,284 | $1.32M | 0.01% | +251+1.1% | Added |
| AlphaCrest Capital Management LLC | 22,193 | $1.32M | 0.07% | +4,881+28.2% | Added |
| New Mexico Educational Retirement Board | 22,100 | $1.31M | 0.05% | −2,600−10.5% | Reduced |
| Arnhold LLC | 21,045 | $1.25M | 0.14% | 00.0% | Unchanged |
| Davenport & Co LLC | 21,034 | $1.25M | 0.01% | +75+0.4% | Added |