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 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 |
|---|---|---|---|---|---|
| Voya Investment Management LLC | 13,762 | $1.17M | 0.00% | −2,984−17.8% | Reduced |
| Donald L. Hagan, LLC | 13,853 | $1.18M | 0.58% | −458−3.2% | Reduced |
| Cetera Investment Advisers | 13,913 | $1.18M | 0.00% | +3,023+27.8% | Added |
| Redwood Investment Management, LLC | 14,071 | $1.19M | 0.13% | −1,110−7.3% | Reduced |
| Pensionfund Sabic | 14,100 | $1.20M | 0.33% | 00.0% | Unchanged |
| Gotham Asset Management, LLC | 14,555 | $1.23M | 0.01% | 00.0% | Unchanged |
| Lido Advisors, LLC | 14,610 | $1.24M | 0.01% | +993+7.3% | Added |
| Dumont & Blake Investment Advisors LLC | 14,653 | $1.24M | 0.30% | +14,653 | New |
| Pictet Asset Management Holding SA | 14,779 | $1.25M | 0.00% | −1,103−6.9% | Reduced |
| Toronto Dominion Bank | 15,062 | $1.29M | 0.00% | −1,455−8.8% | Reduced |
| Lafayette Investments, Inc. | 15,274 | $1.30M | 0.25% | 00.0% | Unchanged |
| Headlands Technologies LLC | 15,340 | $1.30M | 0.10% | +4,263+38.5% | Added |
| Mackenzie Financial Corp | 15,573 | $1.32M | 0.00% | +2,950+23.4% | Added |
| Capstone Investment Advisors, LLC | 15,606 | $1.32M | 0.01% | −5,868−27.3% | Reduced |
| Dynamic Technology Lab Private Ltd | 15,785 | $1.34M | 0.23% | +5,196+49.1% | Added |
| Pacer Advisors, Inc. | 16,314 | $1.38M | 0.00% | +7,090+76.9% | Added |
| O'Shaughnessy Asset Management, LLC | 16,412 | $1.39M | 0.01% | −12,006−42.2% | Reduced |
| Oppenheimer Asset Management Inc. | 17,009 | $1.44M | 0.02% | −140−0.8% | Reduced |
| Utah Retirement Systems | 17,165 | $1.46M | 0.01% | +393+2.3% | Added |
| Susquehanna International Group, LLP | 17,212 | $1.46M | 0.00% | −19,376−53.0% | Reduced |
| Neuberger Berman Group LLC | 17,217 | $1.46M | 0.00% | −13,299−43.6% | Reduced |
| Summit Trail Advisors, LLC | 17,336 | $1.47M | 0.02% | +11,679+206.5% | Added |
| Ameritas Investment Partners, Inc. | 17,612 | $1.49M | 0.05% | −757−4.1% | Reduced |
| Mercer Global Advisors Inc | 17,732 | $1.50M | 0.00% | +7,059+66.1% | Added |
| Portfolio Design Labs, LLC | 17,804 | $1.51M | 0.26% | −41,973−70.2% | Reduced |
| Parallel Advisors, LLC | 18,628 | $1.58M | 0.03% | +646+3.6% | Added |
| Oregon Public Employees Retirement Fund | 18,886 | $1.60M | 0.02% | −500−2.6% | Reduced |
| BNP Paribas Arbitrage, SA | 19,157 | $1.63M | 0.00% | +4,463+30.4% | Added |
| Gries Financial LLC | 19,382 | $1.64M | 0.26% | −10,465−35.1% | Reduced |
| Sequoia Financial Advisors, LLC | 19,510 | $1.66M | 0.01% | +5,666+40.9% | Added |
| Lazard Asset Management LLC | 19,786 | $1.68M | 0.00% | +1,586+8.7% | Added |
| Moors & Cabot, Inc. | 20,299 | $1.72M | 0.08% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 20,525 | $1.74M | 0.03% | −3,620−15.0% | Reduced |
| New Mexico Educational Retirement Board | 20,800 | $1.76M | 0.05% | 00.0% | Unchanged |
| Davenport & Co LLC | 20,806 | $1.77M | 0.01% | +19+0.1% | Added |
| Northwestern Mutual Investment Management Company, LLC | 20,942 | $1.78M | 0.03% | −182−0.9% | Reduced |
| Hussman Strategic Advisors, Inc. | 21,000 | $1.78M | 0.39% | +21,000 | New |
| Wealth Enhancement Advisory Services, LLC | 21,247 | $1.80M | 0.00% | +473+2.3% | Added |
| Campbell & CO Investment Adviser LLC | 21,411 | $1.82M | 0.14% | +5,652+35.9% | Added |
| Deutsche Bank AG | 21,644 | $1.84M | 0.00% | −12,573−36.7% | Reduced |
| CI Private Wealth, LLC | 21,665 | $1.84M | 0.00% | +2,892+15.4% | Added |
| Credit Agricole S A | 21,844 | $1.85M | 0.01% | +21,844 | New |
| Captrust Financial Advisors | 21,887 | $1.86M | 0.00% | +417+1.9% | Added |
| Entropy Technologies, LP | 21,984 | $1.87M | 0.14% | +21,984 | New |
| Colony Group, LLC | 22,325 | $1.89M | 0.00% | +18,208+442.3% | Added |
| State of Michigan Retirement System | 22,388 | $1.90M | 0.01% | −400−1.8% | Reduced |
| First Citizens Bank & Trust Co | 22,417 | $1.90M | 0.04% | +1,093+5.1% | Added |
| Linden Thomas Advisory Services, LLC | 22,476 | $1.91M | 0.19% | −204−0.9% | Reduced |
| Landscape Capital Management, L.L.C. | 22,882 | $1.94M | 0.12% | +13,402+141.4% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 24,028 | $2.04M | 0.00% | +1,524+6.8% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 24,113 | $2.05M | 0.01% | −195−0.8% | Reduced |
| Convergence Investment Partners, LLC | 24,464 | $2.08M | 0.47% | +4,541+22.8% | Added |
| Envestnet Portfolio Solutions, Inc. | 24,949 | $2.12M | 0.01% | −414−1.6% | Reduced |
| Louisiana State Employees Retirement System | 26,200 | $2.22M | 0.04% | −400−1.5% | Reduced |
| Smithbridge Asset Management Inc | 26,201 | $2.22M | 0.32% | 00.0% | Unchanged |
| Clark Capital Management Group, Inc. | 26,544 | $2.25M | 0.01% | +10,588+66.4% | Added |
| Worldquant Millennium Advisors LLC | 26,688 | $2.26M | 0.01% | −67,229−71.6% | Reduced |
| Canada Pension Plan Investment Board | 26,700 | $2.27M | 0.00% | 00.0% | Unchanged |
| Verition Fund Management LLC | 26,942 | $2.29M | 0.01% | −33,388−55.3% | Reduced |
| BI Asset Management Fondsmaeglerselskab A/S | 27,042 | $2.29M | 0.02% | +26,302+3,554.3% | Added |
| DGS Capital Management, LLC | 27,501 | $2.33M | 0.43% | +2,780+11.2% | Added |
| Comerica Bank | 28,014 | $2.38M | 0.01% | −2,459−8.1% | Reduced |
| Brandes Investment Partners, LP | 28,820 | $2.45M | 0.02% | +3,509+13.9% | Added |
| Elo Mutual Pension Insurance Co | 28,892 | $2.45M | 0.04% | +15,729+119.5% | Added |
| The PNC Financial Services Group, Inc. | 29,388 | $2.49M | 0.00% | +2,431+9.0% | Added |
| Johnson Investment Counsel Inc | 29,852 | $2.53M | 0.02% | +153+0.5% | Added |
| Intech Investment Management LLC | 29,927 | $2.54M | 0.02% | +25,097+519.6% | Added |
| Yousif Capital Management, LLC | 30,803 | $2.61M | 0.03% | −2,598−7.8% | Reduced |
| State of New Jersey Common Pension Fund D | 30,872 | $2.62M | 0.01% | +2,826+10.1% | Added |
| SG Americas Securities, LLC | 31,021 | $2.63M | 0.01% | +19,035+158.8% | Added |
| Teachers Retirement System of the State of Kentucky | 31,054 | $2.63M | 0.02% | 00.0% | Unchanged |
| JustInvest LLC | 31,102 | $2.64M | 0.03% | −1,602−4.9% | Reduced |
| Arizona State Retirement System | 31,307 | $2.66M | 0.01% | +129+0.4% | Added |
| Stifel Financial Corp | 32,141 | $2.73M | 0.00% | −1,706−5.0% | Reduced |
| TD Waterhouse Canada Inc. | 32,806 | $2.76M | 0.02% | −1,297−3.8% | Reduced |
| Diversified Trust Co | 33,209 | $2.82M | 0.06% | −2,826−7.8% | Reduced |
| Handelsbanken Fonder AB | 33,500 | $2.84M | 0.01% | +8,300+32.9% | Added |
| Sepio Capital, LP | 33,643 | $2.85M | 0.17% | −355−1.0% | Reduced |
| NJ State Employees Deferred Compensation Plan | 35,400 | $3.00M | 0.33% | 00.0% | Unchanged |
| Crossmark Global Holdings, Inc. | 35,545 | $3.02M | 0.05% | +26,137+277.8% | Added |
| Morningstar Investment Management LLC | 36,154 | $3.07M | 0.11% | +32,448+875.6% | Added |
| Quest Partners LLC | 36,345 | $3.08M | 0.20% | +4,450+14.0% | Added |
| Trexquant Investment LP | 36,702 | $3.11M | 0.03% | −126,947−77.6% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 37,115 | $3.15M | 0.08% | +33,530+935.3% | Added |
| Wealth Alliance Advisory Group, LLC | 37,504 | $3.18M | 0.57% | 00.0% | Unchanged |
| Pathstone Holdings, LLC | 38,155 | $3.24M | 0.01% | +1,543+4.2% | Added |
| Ingalls & Snyder LLC | 38,283 | $3.25M | 0.11% | +2,198+6.1% | Added |
| US Bancorp | 38,431 | $3.26M | 0.00% | +227+0.6% | Added |
| Atria Investments LLC | 40,138 | $3.41M | 0.04% | +831+2.1% | Added |
| State of Tennessee, Treasury Department | 40,498 | $3.44M | 0.01% | 00.0% | Unchanged |
| CWM Advisors, LLC | 41,194 | $3.50M | 0.34% | +5,803+16.4% | Added |
| Creative Planning | 41,394 | $3.51M | 0.00% | +25,670+163.3% | Added |
| Graham Capital Management, L.P. | 41,738 | $3.54M | 0.13% | +3,434+9.0% | Added |
| Zacks Investment Management | 41,915 | $3.56M | 0.03% | +41,915 | New |
| Citigroup Inc | 42,029 | $3.57M | 0.00% | +562+1.4% | Added |
| Henshaw Capital LLC | 42,843 | $3.64M | 0.14% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 43,100 | $3.66M | 0.00% | −3,400−7.3% | Reduced |
| Bokf, NA | 43,233 | $3.67M | 0.06% | −47−0.1% | Reduced |
| Mutual of America Capital Management LLC | 43,392 | $3.68M | 0.04% | −3,659−7.8% | Reduced |
| Nisa Investment Advisors, LLC | 43,835 | $3.72M | 0.01% | 00.0% | Unchanged |