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 2026
Institutional positions in SEI Investments Co as of Jun 30, 2026. 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
- 575
- +16 vs. Q1 2026
- Shares held
- 90.5M
- +664.6K (+0.7%) vs. Q1 2026
- Total value
- $7.94B
- +$888.3M (+12.6%) vs. Q1 2026
- New holders
- 77
- 173 more added
- Sold out
- 61
- 226 more reduced
10 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 2026
Shares, value and share of portfolio for each institution holding SEI Investments Co; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 21,883 | $1.92M | 0.01% | −1,393−6.0% | Reduced |
| Summit Trail Advisors, LLC | 21,432 | $1.88M | 0.02% | −2,866−11.8% | Reduced |
| Davenport & Co LLC | 21,426 | $1.88M | 0.01% | +629+3.0% | Added |
| State of Michigan Retirement System | 21,388 | $1.88M | 0.01% | −1,000−4.5% | Reduced |
| New Mexico Educational Retirement Board | 20,800 | $1.82M | 0.05% | 00.0% | Unchanged |
| Northwestern Mutual Investment Management Company, LLC | 20,562 | $1.80M | 0.02% | −250−1.2% | Reduced |
| Worldquant Millennium Advisors LLC | 20,519 | $1.80M | 0.01% | −17,017−45.3% | Reduced |
| Moors & Cabot, Inc. | 20,298 | $1.78M | 0.07% | 00.0% | Unchanged |
| Envestnet Portfolio Solutions, Inc. | 20,242 | $1.78M | 0.01% | +626+3.2% | Added |
| Oppenheimer Asset Management Inc. | 19,855 | $1.74M | 0.02% | +129+0.7% | Added |
| Oregon Public Employees Retirement Fund | 18,886 | $1.66M | 0.02% | −200−1.0% | Reduced |
| Linden Thomas Advisory Services, LLC | 18,884 | $1.66M | 0.13% | −3,436−15.4% | Reduced |
| Readystate Asset Management LP | 18,797 | $1.65M | 0.07% | +18,797 | New |
| Two Sigma Securities, LLC | 18,722 | $1.64M | 0.14% | +18,722 | New |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 17,980 | $1.58M | 0.02% | +1,414+8.5% | Added |
| Hennion & Walsh Asset Management, Inc. | 17,942 | $1.57M | 0.04% | −312−1.7% | Reduced |
| O'Shaughnessy Asset Management, LLC | 17,910 | $1.57M | 0.01% | −295−1.6% | Reduced |
| OmniStar Financial Group, Inc. | 17,269 | $1.51M | 0.70% | +1,410+8.9% | Added |
| Ameritas Investment Partners, Inc. | 16,822 | $1.48M | 0.04% | −232−1.4% | Reduced |
| Sterling Capital Management LLC | 16,580 | $1.45M | 0.02% | −1,206−6.8% | Reduced |
| XTX Topco Ltd | 16,208 | $1.42M | 0.02% | −11,050−40.5% | Reduced |
| Confluence Wealth Services, Inc. | 16,138 | $1.42M | 0.04% | +1,464+10.0% | Added |
| Parallel Advisors, LLC | 15,608 | $1.37M | 0.02% | −1,551−9.0% | Reduced |
| Toronto Dominion Bank | 15,592 | $1.37M | 0.00% | +1,155+8.0% | Added |
| Hillsdale Investment Management Inc. | 15,270 | $1.34M | 0.03% | +1,840+13.7% | Added |
| Pictet Asset Management Holding SA | 15,018 | $1.32M | 0.00% | −1,967−11.6% | Reduced |
| Prudential Financial Inc | 14,719 | $1.29M | 0.00% | +2,835+23.9% | Added |
| Gotham Asset Management, LLC | 14,351 | $1.26M | 0.00% | −204−1.4% | Reduced |
| Lafayette Investments, Inc. | 14,256 | $1.25M | 0.23% | −965−6.3% | Reduced |
| Park Avenue Securities LLC | 13,943 | $1.22M | 0.01% | −3,135−18.4% | Reduced |
| Federation des caisses Desjardins du Quebec | 13,588 | $1.19M | 0.00% | +2,536+22.9% | Added |
| Redwood Investment Management, LLC | 13,366 | $1.17M | 0.12% | +13,366 | New |
| Evergreen Capital Management LLC | 12,954 | $1.14M | 0.02% | +3,150+32.1% | Added |
| Sequoia Financial Advisors, LLC | 12,812 | $1.12M | 0.01% | −3,004−19.0% | Reduced |
| Dumont & Blake Investment Advisors LLC | 12,691 | $1.11M | 0.25% | −971−7.1% | Reduced |
| HighTower Advisors, LLC | 12,435 | $1.09M | 0.00% | −599−4.6% | Reduced |
| Quantbot Technologies LP | 12,202 | $1.07M | 0.04% | −4,562−27.2% | Reduced |
| Voya Investment Management LLC | 12,177 | $1.07M | 0.00% | +862+7.6% | Added |
| Archford Capital Strategies, LLC | 12,175 | $1.07M | 0.11% | +12,175 | New |
| Quadrature Capital Ltd | 11,823 | $1.04M | 0.01% | +11,823 | New |
| New York Life Investment Management LLC | 11,814 | $1.04M | 0.01% | +463+4.1% | Added |
| Jones Financial Companies LLLP | 11,865 | $1.04M | 0.00% | +4,920+70.8% | Added |
| Glenmede Trust Co NA | 11,712 | $1.03M | 0.00% | −584−4.7% | Reduced |
| Xponance, Inc. | 11,681 | $1.02M | 0.01% | −184−1.6% | Reduced |
| Dynamic Technology Lab Private Ltd | 11,609 | $1.02M | 0.23% | −9,909−46.0% | Reduced |
| Portside Wealth Group, LLC | 11,403 | $1.00M | 0.12% | +775+7.3% | Added |
| ExodusPoint Capital Management, LP | 11,189 | $981.4K | 0.01% | −39,023−77.7% | Reduced |
| Zacks Investment Management | 10,908 | $956.8K | 0.01% | −31,551−74.3% | Reduced |
| Huntington National Bank | 10,885 | $954.7K | 0.00% | −30.0% | Reduced |
| Principal Securities, Inc. | 10,811 | $948.2K | 0.01% | −3,669−25.3% | Reduced |
| Commerce Bank | 10,661 | $935.1K | 0.00% | −479−4.3% | Reduced |
| Numerai GP LLC | 10,563 | $926.5K | 0.08% | +10,563 | New |
| Pacer Advisors, Inc. | 10,371 | $910.0K | 0.00% | −583−5.3% | Reduced |
| Cresset Asset Management, LLC | 10,160 | $891.1K | 0.00% | −48−0.5% | Reduced |
| RBF Capital, LLC | 10,000 | $877.1K | 0.04% | 00.0% | Unchanged |
| Lido Advisors, LLC | 9,995 | $876.8K | 0.00% | −2,441−19.6% | Reduced |
| Penserra Capital Management LLC | 9,982 | $875.0K | 0.01% | −341−3.3% | Reduced |
| Impact Partnership Wealth, LLC | 9,851 | $864.0K | 0.08% | +2,840+40.5% | Added |
| Entropy Technologies, LP | 9,844 | $863.4K | 0.03% | +9,844 | New |
| Brinker Capital Investments, LLC | 9,758 | $855.9K | 0.01% | +45+0.5% | Added |
| Harrell Investment Partners, LLC | 9,707 | $851.4K | 0.18% | +247+2.6% | Added |
| Logan Capital Management Inc | 9,700 | $850.8K | 0.03% | +9,700 | New |
| Patton Albertson Miller Group, LLC | 9,650 | $846.4K | 0.08% | 00.0% | Unchanged |
| Intech Investment Management LLC | 9,578 | $840.1K | 0.01% | −17,115−64.1% | Reduced |
| Patten & Patten Inc | 9,400 | $824.5K | 0.04% | 00.0% | Unchanged |
| NBC Securities, Inc. | 9,275 | $813.5K | 0.06% | +126+1.4% | Added |
| Portfolio Design Labs, LLC | 9,249 | $811.2K | 0.13% | −2,575−21.8% | Reduced |
| Janney Montgomery Scott LLC | 9,178 | $805.0K | 0.00% | −123,730−93.1% | Reduced |
| State of Alaska, Department of Revenue | 8,957 | $785.0K | 0.01% | −351−3.8% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 8,615 | $755.5K | 0.00% | −6,628−43.5% | Reduced |
| Bokf, NA | 8,498 | $745.4K | 0.01% | −31,889−79.0% | Reduced |
| Tudor Investment Corp Et Al | 8,288 | $726.9K | 0.00% | +8,288 | New |
| Precision Wealth Strategies, LLC | 8,235 | $722.3K | 0.22% | −635−7.2% | Reduced |
| Frec Markets, Inc. | 7,997 | $701.4K | 0.06% | +3,250+68.5% | Added |
| Investment Management Corp | 7,812 | $685.2K | 0.57% | +23+0.3% | Added |
| Buckingham Strategic Partners | 7,644 | $670.5K | 0.01% | −4,500−37.1% | Reduced |
| Globeflex Capital L P | 7,624 | $668.7K | 0.09% | +1,122+17.3% | Added |
| Securian Asset Management, Inc | 6,714 | $666.4K | 0.02% | −67−1.0% | Reduced |
| Ascent Group, LLC | 7,467 | $654.9K | 0.02% | −1,589−17.5% | Reduced |
| ISAM Funds (UK) Ltd | 7,400 | $649.1K | 0.46% | +7,400 | New |
| Brown Advisory Inc | 7,252 | $636.1K | 0.00% | −5,238−41.9% | Reduced |
| One Wealth Capital Management, LLC | 7,189 | $630.5K | 0.18% | +3,715+106.9% | Added |
| GAMMA Investing LLC | 7,179 | $629.7K | 0.02% | −209−2.8% | Reduced |
| Federated Hermes, Inc. | 7,087 | $621.6K | 0.00% | −1,923−21.3% | Reduced |
| Edgestream Partners, L.P. | 7,031 | $616.7K | 0.02% | +7,031 | New |
| Aviva PLC | 6,943 | $609.0K | 0.00% | +1,314+23.3% | Added |
| AIA Group Ltd | 6,917 | $606.7K | 0.01% | −8,914−56.3% | Reduced |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 6,853 | $601.1K | 0.02% | −44−0.6% | Reduced |
| Virginia Retirement Systems Et Al | 6,800 | $596.4K | 0.00% | +6,800 | New |
| Nilsine Partners, LLC | 6,750 | $592.0K | 0.04% | +10.0% | Added |
| Fayez Sarofim & Co | 6,675 | $585.5K | 0.00% | 00.0% | Unchanged |
| JMN Financial LLC | 6,674 | $585.5K | 0.46% | −1,335−16.7% | Reduced |
| Ghe, LLC | 6,654 | $583.6K | 0.22% | −110−1.6% | Reduced |
| Snowden Capital Advisors LLC | 6,606 | $579.4K | 0.01% | −271−3.9% | Reduced |
| Freestone Grove Partners LP | 6,603 | $579.1K | 0.00% | −9,741−59.6% | Reduced |
| Kahn Brothers Group Inc | 6,596 | $578.5K | 0.09% | 00.0% | Unchanged |
| OP Asset Management Ltd | 6,539 | $573.5K | 0.01% | 00.0% | Unchanged |
| Wellington Shields & Co., LLC | 6,500 | $570.1K | 0.13% | 00.0% | Unchanged |
| Simplicity Wealth,LLC | 6,410 | $562.2K | 0.02% | +2,708+73.1% | Added |
| AE Wealth Management LLC | 6,381 | $559.7K | 0.00% | +1,154+22.1% | Added |