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 |
|---|---|---|---|---|---|
| Two Sigma Advisers, LP | 11,600 | $688.0K | 0.00% | +11,600 | New |
| Alpha Paradigm Partners, LLC | 11,750 | $697.0K | 0.28% | +11,750 | New |
| BancorpSouth Bank | 11,789 | $699.0K | 0.10% | +830+7.6% | Added |
| Patton Albertson Miller Group, LLC | 11,800 | $700.0K | 0.13% | +11,800 | New |
| Illinois Municipal Retirement Fund | 11,822 | $701.0K | 0.03% | 00.0% | Unchanged |
| Marshall Financial Group LLC | 11,847 | $703.0K | 0.36% | +1,243+11.7% | Added |
| Baker Tilly Wealth Management, LLC | 11,895 | $705.0K | 0.09% | +2,416+25.5% | Added |
| Wellington Shields & Co., LLC | 12,000 | $712.0K | 0.25% | 00.0% | Unchanged |
| Winton Group Ltd | 12,021 | $713.0K | 0.04% | −6,736−35.9% | Reduced |
| Xponance, Inc. | 12,165 | $721.0K | 0.01% | −1,696−12.2% | Reduced |
| Mackenzie Financial Corp | 12,391 | $735.0K | 0.00% | +881+7.7% | Added |
| Van Eck Associates Corp | 13,310 | $789.0K | 0.00% | +1,144+9.4% | Added |
| Guggenheim Capital LLC | 13,855 | $822.0K | 0.00% | +4,105+42.1% | Added |
| Zeke Capital Advisors, LLC | 13,995 | $830.0K | 0.05% | +10+0.1% | Added |
| Nissay Asset Management Corp | 14,028 | $832.0K | 0.01% | +359+2.6% | Added |
| IFM Investors Pty Ltd | 14,143 | $839.0K | 0.02% | 00.0% | Unchanged |
| Aurora Investment Counsel | 14,195 | $842.0K | 0.59% | +145+1.0% | Added |
| Salem Investment Counselors Inc | 14,608 | $866.0K | 0.05% | 00.0% | Unchanged |
| DnB Asset Management AS | 15,355 | $910.6K | 0.01% | +1,148+8.1% | Added |
| Kingsview Wealth Management, LLC | 15,404 | $913.0K | 0.04% | +15,404 | New |
| Boston Financial Mangement LLC | 15,900 | $943.0K | 0.04% | 00.0% | Unchanged |
| American Century Companies Inc | 16,121 | $956.0K | 0.00% | +2,314+16.8% | Added |
| First Republic Investment Management, Inc. | 16,245 | $963.0K | 0.00% | +1,172+7.8% | Added |
| Teachers Retirement System of the State of Kentucky | 16,305 | $967.0K | 0.01% | −1,700−9.4% | Reduced |
| Susquehanna International Group, LLP | 16,458 | $976.0K | 0.00% | −6,055−26.9% | Reduced |
| Baird Financial Group, Inc. | 16,570 | $983.0K | 0.00% | +800+5.1% | Added |
| Creative Planning | 16,801 | $996.0K | 0.00% | +13,091+352.9% | Added |
| Meristem Family Wealth, LLC | 16,883 | $1.00M | 0.10% | +150+0.9% | Added |
| Ontario Teachers Pension Plan Board | 17,069 | $1.01M | 0.00% | +4,878+40.0% | Added |
| Northwestern Mutual Investment Management Company, LLC | 17,712 | $1.05M | 0.02% | −2,029−10.3% | Reduced |
| Cypress Capital, LLC | 17,964 | $1.06M | 0.14% | +17,964 | New |
| Westwood Holdings Group Inc. | 17,969 | $1.07M | 0.01% | −1,436−7.4% | Reduced |
| Federated Hermes, Inc. | 18,995 | $1.13M | 0.00% | −4,129−17.9% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 19,157 | $1.14M | 0.00% | −19,140−50.0% | Reduced |
| Stifel Financial Corp | 19,188 | $1.14M | 0.00% | +609+3.3% | Added |
| Lafayette Investments, Inc. | 19,449 | $1.15M | 0.31% | +1,699+9.6% | Added |
| Moors & Cabot, Inc. | 19,546 | $1.16M | 0.07% | 00.0% | Unchanged |
| Jane Street Group, LLC | 19,574 | $1.16M | 0.00% | −17,633−47.4% | Reduced |
| Utah Retirement Systems | 19,574 | $1.16M | 0.02% | −1,300−6.2% | Reduced |
| Metropolitan Life Insurance Co | 19,594 | $1.16M | 0.02% | −2,617−11.8% | Reduced |
| Prudential PLC | 19,859 | $1.18M | 0.02% | +5,539+38.7% | Added |
| Tiedemann Advisors, LLC | 20,022 | $1.19M | 0.06% | 00.0% | Unchanged |
| Unigestion Holding SA | 20,498 | $1.22M | 0.05% | +1,466+7.7% | Added |
| Globeflex Capital L P | 20,571 | $1.22M | 0.27% | 00.0% | Unchanged |
| Korea Investment CORP | 20,800 | $1.23M | 0.00% | −15,100−42.1% | Reduced |
| Davenport & Co LLC | 21,034 | $1.25M | 0.01% | +75+0.4% | Added |
| Arnhold LLC | 21,045 | $1.25M | 0.14% | 00.0% | Unchanged |
| New Mexico Educational Retirement Board | 22,100 | $1.31M | 0.05% | −2,600−10.5% | Reduced |
| AlphaCrest Capital Management LLC | 22,193 | $1.32M | 0.07% | +4,881+28.2% | Added |
| Panagora Asset Management Inc | 22,284 | $1.32M | 0.01% | +251+1.1% | Added |
| Grantham, Mayo, Van Otterloo & Co. LLC | 22,317 | $1.32M | 0.01% | +2,500+12.6% | Added |
| British Columbia Investment Management Corp | 22,500 | $1.33M | 0.01% | −296−1.3% | Reduced |
| Oliver Luxxe Assets LLC | 22,570 | $1.34M | 0.37% | 00.0% | Unchanged |
| Skandinaviska Enskilda Banken AB (publ) | 23,000 | $1.36M | 0.01% | 00.0% | Unchanged |
| MUFG Securities EMEA plc | 23,200 | $1.38M | 0.02% | +23,200 | New |
| SG Americas Securities, LLC | 23,780 | $1.41M | 0.01% | −250−1.0% | Reduced |
| Gulf International Bank (UK) Ltd | 23,880 | $1.42M | 0.02% | 00.0% | Unchanged |
| Toroso Investments, LLC | 23,914 | $1.42M | 0.05% | +5,944+33.1% | Added |
| Bank of Nova Scotia | 24,000 | $1.42M | 0.00% | +24,000 | New |
| Gsa Capital Partners LLP | 24,990 | $1.48M | 0.15% | +24,990 | New |
| King Luther Capital Management Corp | 25,418 | $1.51M | 0.01% | −98−0.4% | Reduced |
| Morris Capital Advisors, LLC | 25,801 | $1.53M | 1.21% | 00.0% | Unchanged |
| Moody Aldrich Partners LLC | 26,193 | $1.55M | 0.20% | +8,458+47.7% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 26,622 | $1.58M | 0.01% | +484+1.9% | Added |
| USS Investment Management Ltd | 26,941 | $1.60M | 0.01% | +26,941 | New |
| The PNC Financial Services Group, Inc. | 27,241 | $1.61M | 0.00% | +714+2.7% | Added |
| Louisiana State Employees Retirement System | 27,300 | $1.62M | 0.04% | −3,400−11.1% | Reduced |
| Bright Rock Capital Management, LLC | 27,600 | $1.64M | 0.41% | 00.0% | Unchanged |
| Raymond James Financial Services Advisors, Inc. | 27,919 | $1.66M | 0.00% | −239−0.8% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 28,086 | $1.67M | 0.01% | −7,653−21.4% | Reduced |
| Nomura Asset Management Co Ltd | 28,096 | $1.67M | 0.01% | +6,566+30.5% | Added |
| Canada Pension Plan Investment Board | 29,604 | $1.75M | 0.00% | +29,131+6,158.8% | Added |
| Macquarie Group Ltd | 30,017 | $1.78M | 0.00% | 00.0% | Unchanged |
| State of Michigan Retirement System | 30,701 | $1.82M | 0.01% | −3,000−8.9% | Reduced |
| Johnson Investment Counsel Inc | 30,730 | $1.82M | 0.02% | 00.0% | Unchanged |
| Pensionfund Sabic | 32,000 | $1.90M | 0.40% | 00.0% | Unchanged |
| State of Alaska, Department of Revenue | 33,377 | $1.98M | 0.02% | +688+2.1% | Added |
| Arizona State Retirement System | 34,066 | $2.02M | 0.02% | −414−1.2% | Reduced |
| Atria Investments LLC | 34,085 | $2.02M | 0.04% | −1,266−3.6% | Reduced |
| IFG Advisory, LLC | 34,235 | $2.03M | 0.22% | +3,625+11.8% | Added |
| Courant Investment Management LLC | 34,707 | $2.06M | 1.74% | +34,707 | New |
| NJ State Employees Deferred Compensation Plan | 35,400 | $2.10M | 0.28% | 00.0% | Unchanged |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 35,422 | $2.10M | 0.02% | −4,066−10.3% | Reduced |
| Royal London Asset Management Ltd | 36,632 | $2.17M | 0.01% | −4,897−11.8% | Reduced |
| Franklin Resources Inc | 36,692 | $2.17M | 0.00% | −5,564−13.2% | Reduced |
| Wealth Alliance Advisory Group, LLC | 37,504 | $2.22M | 1.08% | 00.0% | Unchanged |
| Vontobel Holding Ltd. | 38,455 | $2.28M | 0.02% | −13,587−26.1% | Reduced |
| Treasurer of the State of North Carolina | 38,968 | $2.31M | 0.01% | −1,061−2.7% | Reduced |
| Ameritas Investment Partners, Inc. | 39,381 | $2.33M | 0.09% | −3,482−8.1% | Reduced |
| Squarepoint Ops LLC | 39,486 | $2.34M | 0.02% | +29,334+288.9% | Added |
| Acadian Asset Management LLC | 39,761 | $2.35M | 0.01% | +14,076+54.8% | Added |
| Handelsbanken Fonder AB | 40,262 | $2.39M | 0.01% | +1,900+5.0% | Added |
| Henshaw Capital LLC | 41,254 | $2.45M | 0.15% | 00.0% | Unchanged |
| Toronto Dominion Bank | 41,575 | $2.47M | 0.00% | −241−0.6% | Reduced |
| Oppenheimer Asset Management Inc. | 42,261 | $2.51M | 0.04% | −925−2.1% | Reduced |
| West Coast Financial LLC | 46,167 | $2.74M | 0.44% | +837+1.8% | Added |
| Nisa Investment Advisors, LLC | 46,650 | $2.77M | 0.02% | 00.0% | Unchanged |
| Interval Partners, LP | 47,277 | $2.80M | 0.16% | +9,842+26.3% | Added |
| HBK Sorce Advisory LLC | 47,902 | $2.84M | 0.16% | +35,591+289.1% | Added |
| Taylor Hoffman Wealth Management | 49,717 | $2.97M | 1.27% | +3,473+7.5% | Added |