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 11 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 2025
Institutional positions in SEI Investments Co as of Sep 30, 2025. 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
- 550
- −6 vs. Q2 2025
- Shares held
- 88.5M
- −812.5K (−0.9%) vs. Q2 2025
- Total value
- $7.51B
- −$521.0M (−6.5%) vs. Q2 2025
- New holders
- 60
- 209 more added
- Sold out
- 66
- 171 more reduced
8 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: 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 2025
Shares, value and share of portfolio for each institution holding SEI Investments Co; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Zurcher Kantonalbank (Zurich Cantonalbank) | 24,028 | $2.04M | 0.00% | +1,524+6.8% | Added |
| Landscape Capital Management, L.L.C. | 22,882 | $1.94M | 0.12% | +13,402+141.4% | Added |
| Linden Thomas Advisory Services, LLC | 22,476 | $1.91M | 0.19% | −204−0.9% | Reduced |
| First Citizens Bank & Trust Co | 22,417 | $1.90M | 0.04% | +1,093+5.1% | Added |
| State of Michigan Retirement System | 22,388 | $1.90M | 0.01% | −400−1.8% | Reduced |
| Colony Group, LLC | 22,325 | $1.89M | 0.00% | +18,208+442.3% | Added |
| Entropy Technologies, LP | 21,984 | $1.87M | 0.14% | +21,984 | New |
| Captrust Financial Advisors | 21,887 | $1.86M | 0.00% | +417+1.9% | Added |
| Credit Agricole S A | 21,844 | $1.85M | 0.01% | +21,844 | New |
| CI Private Wealth, LLC | 21,665 | $1.84M | 0.00% | +2,892+15.4% | Added |
| Deutsche Bank AG | 21,644 | $1.84M | 0.00% | −12,573−36.7% | Reduced |
| Campbell & CO Investment Adviser LLC | 21,411 | $1.82M | 0.14% | +5,652+35.9% | Added |
| Wealth Enhancement Advisory Services, LLC | 21,247 | $1.80M | 0.00% | +473+2.3% | Added |
| Hussman Strategic Advisors, Inc. | 21,000 | $1.78M | 0.39% | +21,000 | New |
| Northwestern Mutual Investment Management Company, LLC | 20,942 | $1.78M | 0.03% | −182−0.9% | Reduced |
| Davenport & Co LLC | 20,806 | $1.77M | 0.01% | +19+0.1% | Added |
| New Mexico Educational Retirement Board | 20,800 | $1.76M | 0.05% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 20,525 | $1.74M | 0.03% | −3,620−15.0% | Reduced |
| Moors & Cabot, Inc. | 20,299 | $1.72M | 0.08% | 00.0% | Unchanged |
| Lazard Asset Management LLC | 19,786 | $1.68M | 0.00% | +1,586+8.7% | Added |
| Sequoia Financial Advisors, LLC | 19,510 | $1.66M | 0.01% | +5,666+40.9% | Added |
| Gries Financial LLC | 19,382 | $1.64M | 0.26% | −10,465−35.1% | Reduced |
| BNP Paribas Arbitrage, SA | 19,157 | $1.63M | 0.00% | +4,463+30.4% | Added |
| Oregon Public Employees Retirement Fund | 18,886 | $1.60M | 0.02% | −500−2.6% | Reduced |
| Parallel Advisors, LLC | 18,628 | $1.58M | 0.03% | +646+3.6% | Added |
| Portfolio Design Labs, LLC | 17,804 | $1.51M | 0.26% | −41,973−70.2% | Reduced |
| Mercer Global Advisors Inc | 17,732 | $1.50M | 0.00% | +7,059+66.1% | Added |
| Ameritas Investment Partners, Inc. | 17,612 | $1.49M | 0.05% | −757−4.1% | Reduced |
| Summit Trail Advisors, LLC | 17,336 | $1.47M | 0.02% | +11,679+206.5% | Added |
| Neuberger Berman Group LLC | 17,217 | $1.46M | 0.00% | −13,299−43.6% | Reduced |
| Susquehanna International Group, LLP | 17,212 | $1.46M | 0.00% | −19,376−53.0% | Reduced |
| Utah Retirement Systems | 17,165 | $1.46M | 0.01% | +393+2.3% | Added |
| Oppenheimer Asset Management Inc. | 17,009 | $1.44M | 0.02% | −140−0.8% | Reduced |
| O'Shaughnessy Asset Management, LLC | 16,412 | $1.39M | 0.01% | −12,006−42.2% | Reduced |
| Pacer Advisors, Inc. | 16,314 | $1.38M | 0.00% | +7,090+76.9% | Added |
| Dynamic Technology Lab Private Ltd | 15,785 | $1.34M | 0.23% | +5,196+49.1% | Added |
| Capstone Investment Advisors, LLC | 15,606 | $1.32M | 0.01% | −5,868−27.3% | Reduced |
| Mackenzie Financial Corp | 15,573 | $1.32M | 0.00% | +2,950+23.4% | Added |
| Headlands Technologies LLC | 15,340 | $1.30M | 0.10% | +4,263+38.5% | Added |
| Lafayette Investments, Inc. | 15,274 | $1.30M | 0.25% | 00.0% | Unchanged |
| Toronto Dominion Bank | 15,062 | $1.29M | 0.00% | −1,455−8.8% | Reduced |
| Pictet Asset Management Holding SA | 14,779 | $1.25M | 0.00% | −1,103−6.9% | Reduced |
| Dumont & Blake Investment Advisors LLC | 14,653 | $1.24M | 0.30% | +14,653 | New |
| Lido Advisors, LLC | 14,610 | $1.24M | 0.01% | +993+7.3% | Added |
| Gotham Asset Management, LLC | 14,555 | $1.23M | 0.01% | 00.0% | Unchanged |
| Pensionfund Sabic | 14,100 | $1.20M | 0.33% | 00.0% | Unchanged |
| Redwood Investment Management, LLC | 14,071 | $1.19M | 0.13% | −1,110−7.3% | Reduced |
| Cetera Investment Advisers | 13,913 | $1.18M | 0.00% | +3,023+27.8% | Added |
| Donald L. Hagan, LLC | 13,853 | $1.18M | 0.58% | −458−3.2% | Reduced |
| Voya Investment Management LLC | 13,762 | $1.17M | 0.00% | −2,984−17.8% | Reduced |
| Ascent Group, LLC | 13,354 | $1.13M | 0.04% | −32,661−71.0% | Reduced |
| Jacobs Levy Equity Management, Inc | 12,623 | $1.07M | 0.00% | −79,918−86.4% | Reduced |
| Brown Advisory Inc | 12,450 | $1.06M | 0.00% | −279−2.2% | Reduced |
| New Age Alpha Advisors, LLC | 12,408 | $1.05M | 0.04% | −359−2.8% | Reduced |
| Buckingham Strategic Partners | 11,816 | $1.00M | 0.01% | −280−2.3% | Reduced |
| Aviva PLC | 11,769 | $998.6K | 0.00% | +219+1.9% | Added |
| Novem Group | 11,716 | $994.1K | 0.12% | +411+3.6% | Added |
| Marshall Financial Group LLC | 11,699 | $992.7K | 0.19% | +536+4.8% | Added |
| HighTower Advisors, LLC | 11,576 | $982.2K | 0.00% | −155−1.3% | Reduced |
| Asset Management One Co.,Ltd. | 11,504 | $976.1K | 0.00% | −703−5.8% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 11,138 | $945.1K | 0.03% | +2,993+36.7% | Added |
| Voleon Capital Management LP | 11,026 | $935.6K | 0.02% | +11,026 | New |
| LMR Partners LLP | 10,957 | $929.7K | 0.01% | 00.0% | Unchanged |
| Xponance, Inc. | 10,941 | $928.3K | 0.01% | −166−1.5% | Reduced |
| Farringdon Capital, Ltd. | 10,833 | $919.2K | 0.23% | +7,395+215.1% | Added |
| Diversify Advisory Services, LLC | 11,212 | $906.8K | 0.03% | +4,861+76.5% | Added |
| Wiley Bros.-Aintree Capital, LLC | 10,476 | $889.5K | 0.01% | +2,486+31.1% | Added |
| BancorpSouth Bank | 10,409 | $883.2K | 0.05% | 00.0% | Unchanged |
| SRS Capital Advisors, Inc. | 10,250 | $869.7K | 0.01% | +9,283+960.0% | Added |
| Federated Hermes, Inc. | 10,031 | $851.1K | 0.00% | −389−3.7% | Reduced |
| RBF Capital, LLC | 10,000 | $848.5K | 0.04% | 00.0% | Unchanged |
| Cresset Asset Management, LLC | 9,968 | $845.8K | 0.00% | +830+9.1% | Added |
| Commerce Bank | 9,927 | $842.3K | 0.00% | −344−3.3% | Reduced |
| Logan Capital Management Inc | 9,700 | $823.0K | 0.03% | 00.0% | Unchanged |
| Patton Albertson Miller Group, LLC | 9,650 | $818.8K | 0.10% | 00.0% | Unchanged |
| New York Life Investment Management LLC | 9,606 | $815.1K | 0.01% | −506−5.0% | Reduced |
| Point72 Asia (Singapore) Pte. Ltd. | 9,547 | $810.1K | 0.13% | −20,648−68.4% | Reduced |
| Patten & Patten Inc | 9,400 | $797.6K | 0.05% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 9,364 | $794.5K | 0.00% | +6,394+215.3% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 9,267 | $786.3K | 0.00% | +9,267 | New |
| Harrell Investment Partners, LLC | 9,234 | $783.5K | 0.19% | +202+2.2% | Added |
| Portside Wealth Group, LLC | 9,193 | $780.0K | 0.11% | +1,250+15.7% | Added |
| NBC Securities, Inc. | 9,047 | $767.6K | 0.06% | +48+0.5% | Added |
| Brinker Capital Investments, LLC | 8,910 | $756.0K | 0.01% | −5,893−39.8% | Reduced |
| Hillsdale Investment Management Inc. | 8,900 | $755.2K | 0.02% | +1,600+21.9% | Added |
| Point72 (DIFC) Ltd | 8,872 | $752.8K | 0.05% | −5,023−36.1% | Reduced |
| Glenmede Investment Management, LP | 8,425 | $714.9K | 0.00% | 00.0% | Unchanged |
| MQS Management LLC | 8,323 | $706.2K | 0.41% | −1,904−18.6% | Reduced |
| Quadrant Capital Group LLC | 8,215 | $697.0K | 0.02% | +220+2.8% | Added |
| Atom Investors LP | 8,155 | $692.0K | 0.05% | +529+6.9% | Added |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 8,145 | $691.1K | 0.01% | +2,315+39.7% | Added |
| MML Investors Services, LLC | 8,090 | $686.5K | 0.00% | +2,302+39.8% | Added |
| Investment Management Corp | 7,789 | $660.9K | 0.57% | 00.0% | Unchanged |
| Kestra Private Wealth Services, LLC | 7,727 | $655.6K | 0.01% | −319−4.0% | Reduced |
| Evergreen Capital Management LLC | 7,591 | $644.1K | 0.02% | +836+12.4% | Added |
| State of Wyoming | 7,565 | $641.9K | 0.07% | +3,155+71.5% | Added |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 7,428 | $630.3K | 0.02% | +44+0.6% | Added |
| Nilsine Partners, LLC | 7,257 | $615.8K | 0.06% | −263−3.5% | Reduced |
| South Dakota Investment Council | 7,228 | $613.0K | 0.01% | −1,300−15.2% | Reduced |
| GAMMA Investing LLC | 7,096 | $602.1K | 0.03% | +367+5.5% | Added |