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, Q2 2021
Institutional positions in SEI Investments Co as of Jun 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
- 440
- +1 vs. Q1 2021
- Shares held
- 97.6M
- −282.9K (−0.3%) vs. Q1 2021
- Total value
- $6.04B
- +$84.4M (+1.4%) vs. Q1 2021
- New holders
- 46
- 148 more added
- Sold out
- 45
- 150 more reduced
4 institutions that held it in Q1 2021 haven't filed for Q2 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2021
Shares, value and share of portfolio for each institution holding SEI Investments Co; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Crossmark Global Holdings, Inc. | 10,930 | $677.0K | 0.02% | −10−0.1% | Reduced |
| BancorpSouth Bank | 10,959 | $679.0K | 0.10% | +272+2.5% | Added |
| Northwest Investment Counselors, LLC | 11,059 | $685.0K | 0.19% | +10.0% | Added |
| Baldwin Investment Management, LLC | 11,180 | $693.0K | 0.12% | −567−4.8% | Reduced |
| M&T Bank Corp | 11,395 | $706.0K | 0.00% | +237+2.1% | Added |
| Mackenzie Financial Corp | 11,510 | $713.0K | 0.00% | −3,910−25.4% | Reduced |
| Livingston Group Asset Management CO (operating as Southport Capital Management) | 11,800 | $731.0K | 0.18% | 00.0% | Unchanged |
| Illinois Municipal Retirement Fund | 11,822 | $733.0K | 0.03% | 00.0% | Unchanged |
| Wellington Shields & Co., LLC | 12,000 | $744.0K | 0.25% | 00.0% | Unchanged |
| Van Eck Associates Corp | 12,166 | $754.0K | 0.00% | +1,073+9.7% | Added |
| Ontario Teachers Pension Plan Board | 12,191 | $755.0K | 0.01% | +6,692+121.7% | Added |
| HBK Sorce Advisory LLC | 12,311 | $763.0K | 0.04% | −35−0.3% | Reduced |
| Pacer Advisors, Inc. | 12,551 | $778.0K | 0.01% | −150−1.2% | Reduced |
| Nissay Asset Management Corp | 13,669 | $847.0K | 0.01% | −799−5.5% | Reduced |
| Marshall Wace North America L.P. | 13,734 | $851.0K | 0.00% | +13,734 | New |
| American Century Companies Inc | 13,807 | $855.0K | 0.00% | +3,942+40.0% | Added |
| Xponance, Inc. | 13,861 | $859.0K | 0.02% | +1,320+10.5% | Added |
| Zeke Capital Advisors, LLC | 13,985 | $867.0K | 0.05% | +1,182+9.2% | Added |
| Aurora Investment Counsel | 14,050 | $871.0K | 0.61% | +3,284+30.5% | Added |
| IFM Investors Pty Ltd | 14,143 | $876.0K | 0.02% | −1,266−8.2% | Reduced |
| DnB Asset Management AS | 14,207 | $880.4K | 0.01% | +709+5.3% | Added |
| Alphasimplex Group, LLC | 14,238 | $882.0K | 0.44% | −3,512−19.8% | Reduced |
| Clearbridge Investments, LLC | 14,279 | $885.0K | 0.00% | +1,417+11.0% | Added |
| Prudential PLC | 14,320 | $887.0K | 0.01% | +6,056+73.3% | Added |
| D. E. Shaw & Co., Inc. | 14,591 | $904.0K | 0.00% | −178,850−92.5% | Reduced |
| Salem Investment Counselors Inc | 14,608 | $905.0K | 0.05% | +14,608 | New |
| First Republic Investment Management, Inc. | 15,073 | $934.0K | 0.00% | −1,533−9.2% | Reduced |
| Baird Financial Group, Inc. | 15,770 | $977.0K | 0.00% | +239+1.5% | Added |
| Boston Financial Mangement LLC | 15,900 | $985.0K | 0.04% | −19,130−54.6% | Reduced |
| Meristem Family Wealth, LLC | 16,733 | $1.04M | 0.16% | −102−0.6% | Reduced |
| AlphaCrest Capital Management LLC | 17,312 | $1.07M | 0.05% | +2,842+19.6% | Added |
| ExodusPoint Capital Management, LP | 17,703 | $1.10M | 0.02% | +17,703 | New |
| Moody Aldrich Partners LLC | 17,735 | $1.10M | 0.15% | 00.0% | Unchanged |
| Lafayette Investments, Inc. | 17,750 | $1.10M | 0.30% | +494+2.9% | Added |
| Toroso Investments, LLC | 17,970 | $1.11M | 0.04% | +17,970 | New |
| Teachers Retirement System of the State of Kentucky | 18,005 | $1.12M | 0.01% | 00.0% | Unchanged |
| Stifel Financial Corp | 18,579 | $1.15M | 0.00% | +97+0.5% | Added |
| Winton Group Ltd | 18,757 | $1.16M | 0.06% | +1,599+9.3% | Added |
| Unigestion Holding SA | 19,032 | $1.18M | 0.04% | −477−2.4% | Reduced |
| Westwood Holdings Group Inc. | 19,405 | $1.20M | 0.01% | −8,432−30.3% | Reduced |
| Moors & Cabot, Inc. | 19,546 | $1.21M | 0.08% | +150+0.8% | Added |
| Northwestern Mutual Investment Management Company, LLC | 19,741 | $1.22M | 0.02% | −129−0.6% | Reduced |
| Grantham, Mayo, Van Otterloo & Co. LLC | 19,817 | $1.23M | 0.01% | +1,000+5.3% | Added |
| Tiedemann Advisors, LLC | 20,022 | $1.24M | 0.05% | −35−0.2% | Reduced |
| Globeflex Capital L P | 20,571 | $1.27M | 0.23% | 00.0% | Unchanged |
| Utah Retirement Systems | 20,874 | $1.29M | 0.02% | −800−3.7% | Reduced |
| Davenport & Co LLC | 20,959 | $1.30M | 0.01% | 00.0% | Unchanged |
| Arnhold LLC | 21,045 | $1.30M | 0.15% | 00.0% | Unchanged |
| Nomura Asset Management Co Ltd | 21,530 | $1.33M | 0.01% | +730+3.5% | Added |
| Panagora Asset Management Inc | 22,033 | $1.36M | 0.01% | −195−0.9% | Reduced |
| Metropolitan Life Insurance Co | 22,211 | $1.38M | 0.02% | −185−0.8% | Reduced |
| Susquehanna International Group, LLP | 22,513 | $1.40M | 0.00% | +8,045+55.6% | Added |
| Oliver Luxxe Assets LLC | 22,570 | $1.40M | 0.38% | 00.0% | Unchanged |
| British Columbia Investment Management Corp | 22,796 | $1.41M | 0.01% | +2,629+13.0% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 23,000 | $1.43M | 0.01% | +4,000+21.1% | Added |
| Federated Hermes, Inc. | 23,124 | $1.43M | 0.00% | +382+1.7% | Added |
| Gulf International Bank (UK) Ltd | 23,880 | $1.48M | 0.02% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 24,030 | $1.49M | 0.01% | +7,564+45.9% | Added |
| New Mexico Educational Retirement Board | 24,700 | $1.53M | 0.05% | +3,400+16.0% | Added |
| King Luther Capital Management Corp | 25,516 | $1.58M | 0.01% | +15,376+151.6% | Added |
| Acadian Asset Management LLC | 25,685 | $1.59M | 0.01% | +14,898+138.1% | Added |
| Morris Capital Advisors, LLC | 25,801 | $1.60M | 1.21% | 00.0% | Unchanged |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 26,138 | $1.62M | 0.01% | −169−0.6% | Reduced |
| The PNC Financial Services Group, Inc. | 26,527 | $1.64M | 0.00% | +215+0.8% | Added |
| Bright Rock Capital Management, LLC | 27,600 | $1.71M | 0.41% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 27,945 | $1.73M | 0.05% | +12,188+77.3% | Added |
| Raymond James Financial Services Advisors, Inc. | 28,158 | $1.75M | 0.00% | −229−0.8% | Reduced |
| Forsta Ap-Fonden | 29,700 | $1.84M | 0.02% | −8,800−22.9% | Reduced |
| Macquarie Group Ltd | 30,017 | $1.86M | 0.00% | +13,238+78.9% | Added |
| IFG Advisory, LLC | 30,610 | $1.90M | 0.21% | +30,610 | New |
| Louisiana State Employees Retirement System | 30,700 | $1.90M | 0.05% | −300−1.0% | Reduced |
| Johnson Investment Counsel Inc | 30,730 | $1.90M | 0.03% | −41−0.1% | Reduced |
| Pensionfund Sabic | 32,000 | $1.98M | 0.42% | 00.0% | Unchanged |
| State of Alaska, Department of Revenue | 32,689 | $2.02M | 0.02% | −11,393−25.8% | Reduced |
| State of Michigan Retirement System | 33,701 | $2.09M | 0.01% | −14,200−29.6% | Reduced |
| Arizona State Retirement System | 34,480 | $2.14M | 0.02% | −951−2.7% | Reduced |
| Atria Investments LLC | 35,351 | $2.19M | 0.04% | +1,643+4.9% | Added |
| NJ State Employees Deferred Compensation Plan | 35,400 | $2.19M | 0.29% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 35,739 | $2.21M | 0.01% | 00.0% | Unchanged |
| Korea Investment CORP | 35,900 | $2.23M | 0.01% | +6,900+23.8% | Added |
| Aviva PLC | 36,360 | $2.25M | 0.01% | −1,241−3.3% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 36,627 | $2.27M | 0.01% | −34,267−48.3% | Reduced |
| Jane Street Group, LLC | 37,207 | $2.31M | 0.01% | +24,420+191.0% | Added |
| Interval Partners, LP | 37,435 | $2.32M | 0.14% | −97,849−72.3% | Reduced |
| Wealth Alliance Advisory Group, LLC | 37,504 | $2.32M | 1.13% | 00.0% | Unchanged |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 38,297 | $2.37M | 0.01% | −146−0.4% | Reduced |
| Handelsbanken Fonder AB | 38,362 | $2.38M | 0.01% | −311−0.8% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 39,488 | $2.45M | 0.03% | −251−0.6% | Reduced |
| Treasurer of the State of North Carolina | 40,029 | $2.48M | 0.01% | −1,310−3.2% | Reduced |
| Henshaw Capital LLC | 41,254 | $2.56M | 0.16% | +10,877+35.8% | Added |
| Royal London Asset Management Ltd | 41,529 | $2.57M | 0.01% | −3,196−7.1% | Reduced |
| Toronto Dominion Bank | 41,816 | $2.59M | 0.00% | +3,758+9.9% | Added |
| Franklin Resources Inc | 42,256 | $2.62M | 0.00% | −41,510−49.6% | Reduced |
| HRT Financial LP | 42,384 | $2.63M | 0.02% | +32,898+346.8% | Added |
| Ameritas Investment Partners, Inc. | 42,863 | $2.65M | 0.10% | −1,996−4.4% | Reduced |
| Oppenheimer Asset Management Inc. | 43,186 | $2.67M | 0.04% | −643−1.5% | Reduced |
| LPL Financial LLC | 44,372 | $2.75M | 0.00% | −15,300−25.6% | Reduced |
| West Coast Financial LLC | 45,330 | $2.81M | 0.46% | +974+2.2% | Added |
| Taylor Hoffman Wealth Management | 46,244 | $2.87M | 1.24% | +8,606+22.9% | Added |
| Nisa Investment Advisors, LLC | 46,650 | $2.89M | 0.02% | 00.0% | Unchanged |