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, Q4 2025
Institutional positions in SEI Investments Co as of Dec 31, 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
- 562
- +24 vs. Q3 2025
- Shares held
- 89.1M
- +699.0K (+0.8%) vs. Q3 2025
- Total value
- $7.31B
- −$184.7M (−2.5%) vs. Q3 2025
- New holders
- 81
- 199 more added
- Sold out
- 57
- 192 more reduced
12 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding SEI Investments Co; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Voya Investment Management LLC | 11,502 | $943.4K | 0.00% | −2,260−16.4% | Reduced |
| Principal Securities, Inc. | 11,739 | $962.8K | 0.01% | +9,622+454.5% | Added |
| Marshall Financial Group LLC | 11,921 | $977.8K | 0.19% | +222+1.9% | Added |
| Buckingham Strategic Partners | 11,957 | $980.7K | 0.01% | +141+1.2% | Added |
| Glenmede Trust Co NA | 12,147 | $996.3K | 0.00% | +12,147 | New |
| Brown Advisory Inc | 12,183 | $999.3K | 0.00% | −267−2.1% | Reduced |
| Tudor Investment Corp Et Al | 12,508 | $1.03M | 0.01% | −44,191−77.9% | Reduced |
| Park Avenue Securities LLC | 12,506 | $1.03M | 0.01% | +9,880+376.2% | Added |
| Ascent Group, LLC | 12,851 | $1.05M | 0.04% | −503−3.8% | Reduced |
| Elo Mutual Pension Insurance Co | 12,900 | $1.06M | 0.02% | −15,992−55.4% | Reduced |
| Mackenzie Financial Corp | 12,946 | $1.07M | 0.00% | −2,627−16.9% | Reduced |
| Dynamic Technology Lab Private Ltd | 13,150 | $1.08M | 0.24% | −2,635−16.7% | Reduced |
| Redwood Investment Management, LLC | 13,315 | $1.09M | 0.12% | −756−5.4% | Reduced |
| Confluence Wealth Services, Inc. | 13,372 | $1.10M | 0.05% | +13,372 | New |
| Aviva PLC | 13,398 | $1.10M | 0.00% | +1,629+13.8% | Added |
| Novem Group | 13,403 | $1.10M | 0.13% | +1,687+14.4% | Added |
| Diversify Advisory Services, LLC | 13,060 | $1.12M | 0.04% | +1,848+16.5% | Added |
| Dumont & Blake Investment Advisors LLC | 13,958 | $1.15M | 0.28% | −695−4.7% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 14,097 | $1.16M | 0.01% | +3,621+34.6% | Added |
| Hennion & Walsh Asset Management, Inc. | 14,165 | $1.16M | 0.04% | +3,027+27.2% | Added |
| Toronto Dominion Bank | 14,287 | $1.17M | 0.00% | −775−5.1% | Reduced |
| Asset Management One Co.,Ltd. | 13,975 | $1.18M | 0.00% | +2,471+21.5% | Added |
| Aquatic Capital Management LLC | 14,404 | $1.18M | 0.03% | +14,404 | New |
| Gotham Asset Management, LLC | 14,555 | $1.19M | 0.00% | 00.0% | Unchanged |
| Lido Advisors, LLC | 14,721 | $1.25M | 0.00% | +111+0.8% | Added |
| Lafayette Investments, Inc. | 15,271 | $1.25M | 0.24% | −30.0% | Reduced |
| Quantbot Technologies LP | 15,630 | $1.28M | 0.04% | +15,630 | New |
| Pictet Asset Management Holding SA | 16,029 | $1.31M | 0.00% | +1,250+8.5% | Added |
| O'Shaughnessy Asset Management, LLC | 16,499 | $1.35M | 0.01% | +87+0.5% | Added |
| Amundi | 16,748 | $1.37M | 0.00% | −45,262−73.0% | Reduced |
| Oppenheimer Asset Management Inc. | 16,787 | $1.38M | 0.02% | −222−1.3% | Reduced |
| Susquehanna International Group, LLP | 16,844 | $1.38M | 0.00% | −368−2.1% | Reduced |
| Caxton Associates LLP | 17,000 | $1.39M | 0.03% | +17,000 | New |
| Ameritas Investment Partners, Inc. | 17,054 | $1.40M | 0.04% | −558−3.2% | Reduced |
| Portfolio Design Labs, LLC | 17,144 | $1.41M | 0.23% | −660−3.7% | Reduced |
| Utah Retirement Systems | 17,165 | $1.41M | 0.01% | 00.0% | Unchanged |
| Quadrant Capital Group LLC | 17,567 | $1.44M | 0.04% | +9,352+113.8% | Added |
| Landscape Capital Management, L.L.C. | 17,587 | $1.44M | 0.10% | −5,295−23.1% | Reduced |
| Summit Trail Advisors, LLC | 17,866 | $1.47M | 0.03% | +530+3.1% | Added |
| CI Private Wealth, LLC | 18,171 | $1.50M | 0.00% | −3,494−16.1% | Reduced |
| Oregon Public Employees Retirement Fund | 18,586 | $1.52M | 0.02% | −300−1.6% | Reduced |
| Neuberger Berman Group LLC | 19,020 | $1.56M | 0.00% | +1,803+10.5% | Added |
| Moors & Cabot, Inc. | 20,311 | $1.67M | 0.07% | +12+0.1% | Added |
| Sterling Capital Management LLC | 20,322 | $1.67M | 0.03% | −203−1.0% | Reduced |
| Lazard Asset Management LLC | 20,533 | $1.68M | 0.00% | +747+3.8% | Added |
| Danske Bank A/S | 20,685 | $1.70M | 0.00% | −32,762−61.3% | Reduced |
| Deutsche Bank AG | 20,718 | $1.70M | 0.00% | −926−4.3% | Reduced |
| Davenport & Co LLC | 20,744 | $1.70M | 0.01% | −62−0.3% | Reduced |
| New Mexico Educational Retirement Board | 20,800 | $1.71M | 0.05% | 00.0% | Unchanged |
| Northwestern Mutual Investment Management Company, LLC | 20,820 | $1.71M | 0.02% | −122−0.6% | Reduced |
| Parallel Advisors, LLC | 20,832 | $1.71M | 0.03% | +2,204+11.8% | Added |
| SG Americas Securities, LLC | 21,063 | $1.73M | 0.00% | −9,958−32.1% | Reduced |
| Journey Retirement Planning & Investment Management LLC | 21,116 | $1.73M | 0.36% | +21,116 | New |
| Sequoia Financial Advisors, LLC | 21,223 | $1.74M | 0.01% | +1,713+8.8% | Added |
| MML Investors Services, LLC | 21,413 | $1.76M | 0.00% | +13,323+164.7% | Added |
| State of Michigan Retirement System | 21,988 | $1.80M | 0.01% | −400−1.8% | Reduced |
| Linden Thomas Advisory Services, LLC | 22,354 | $1.83M | 0.19% | −122−0.5% | Reduced |
| Two Sigma Advisers, LP | 22,500 | $1.85M | 0.00% | +15,900+240.9% | Added |
| Mercer Global Advisors Inc | 22,826 | $1.87M | 0.00% | +5,094+28.7% | Added |
| Captrust Financial Advisors | 23,257 | $1.91M | 0.00% | +1,370+6.3% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 23,286 | $1.91M | 0.01% | −827−3.4% | Reduced |
| Pinebridge Investments LLC | 23,452 | $1.92M | 0.01% | +23,452 | New |
| XTX Topco Ltd | 23,831 | $1.95M | 0.05% | +23,831 | New |
| Headlands Technologies LLC | 24,059 | $1.97M | 0.16% | +8,719+56.8% | Added |
| First Citizens Bank & Trust Co | 24,085 | $1.98M | 0.04% | +1,668+7.4% | Added |
| Louisiana State Employees Retirement System | 25,700 | $2.11M | 0.04% | −500−1.9% | Reduced |
| Graham Capital Management, L.P. | 25,894 | $2.12M | 0.07% | −15,844−38.0% | Reduced |
| SummitTX Capital, L.P. | 26,230 | $2.15M | 0.07% | +22,649+632.5% | Added |
| Envestnet Portfolio Solutions, Inc. | 26,300 | $2.16M | 0.01% | +1,351+5.4% | Added |
| Smithbridge Asset Management Inc | 26,601 | $2.18M | 0.19% | +400+1.5% | Added |
| Canada Pension Plan Investment Board | 26,700 | $2.19M | 0.00% | 00.0% | Unchanged |
| Comerica Bank | 27,285 | $2.24M | 0.01% | −729−2.6% | Reduced |
| Entropy Technologies, LP | 27,464 | $2.25M | 0.12% | +5,480+24.9% | Added |
| Convergence Investment Partners, LLC | 27,640 | $2.27M | 0.45% | +3,176+13.0% | Added |
| Callan Family Office, LLC | 27,665 | $2.27M | 0.05% | +27,665 | New |
| The PNC Financial Services Group, Inc. | 28,364 | $2.33M | 0.00% | −1,024−3.5% | Reduced |
| Cetera Investment Advisers | 28,954 | $2.37M | 0.00% | +15,041+108.1% | Added |
| Colony Group, LLC | 28,987 | $2.38M | 0.00% | +6,662+29.8% | Added |
| Wealth Enhancement Advisory Services, LLC | 27,041 | $2.38M | 0.00% | +5,794+27.3% | Added |
| Arizona State Retirement System | 29,066 | $2.38M | 0.01% | −2,241−7.2% | Reduced |
| Yousif Capital Management, LLC | 29,743 | $2.49M | 0.03% | −1,060−3.4% | Reduced |
| JustInvest LLC | 30,516 | $2.50M | 0.02% | −586−1.9% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 30,823 | $2.53M | 0.01% | +6,795+28.3% | Added |
| State of New Jersey Common Pension Fund D | 30,872 | $2.53M | 0.01% | 00.0% | Unchanged |
| Teachers Retirement System of the State of Kentucky | 31,054 | $2.55M | 0.02% | 00.0% | Unchanged |
| Pathstone Holdings, LLC | 31,104 | $2.55M | 0.01% | −7,051−18.5% | Reduced |
| Campbell & CO Investment Adviser LLC | 32,343 | $2.65M | 0.13% | +10,932+51.1% | Added |
| DGS Capital Management, LLC | 32,625 | $2.68M | 0.46% | +5,124+18.6% | Added |
| Sepio Capital, LP | 33,047 | $2.71M | 0.15% | −596−1.8% | Reduced |
| Handelsbanken Fonder AB | 33,500 | $2.75M | 0.01% | 00.0% | Unchanged |
| Diversified Trust Co | 33,709 | $2.76M | 0.05% | +500+1.5% | Added |
| Third View Private Wealth, LLC | 34,229 | $2.81M | 0.38% | +34,229 | New |
| Crossmark Global Holdings, Inc. | 34,611 | $2.84M | 0.04% | −934−2.6% | Reduced |
| Credit Agricole S A | 34,621 | $2.84M | 0.01% | +12,777+58.5% | Added |
| Brandes Investment Partners, LP | 35,663 | $2.93M | 0.02% | +6,843+23.7% | Added |
| Zacks Investment Management | 35,663 | $2.93M | 0.02% | −6,252−14.9% | Reduced |
| Morningstar Investment Management LLC | 36,154 | $2.96M | 0.18% | 00.0% | Unchanged |
| Meeder Asset Management Inc | 36,348 | $2.98M | 0.16% | +36,348 | New |
| Johnson Investment Counsel Inc | 36,882 | $3.03M | 0.02% | +7,030+23.5% | Added |
| Wealth Alliance Advisory Group, LLC | 37,504 | $3.08M | 0.53% | 00.0% | Unchanged |