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, 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 |
|---|---|---|---|---|---|
| Pinebridge Investments LLC | 23,452 | $1.92M | 0.01% | +23,452 | New |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 23,286 | $1.91M | 0.01% | −827−3.4% | Reduced |
| Captrust Financial Advisors | 23,257 | $1.91M | 0.00% | +1,370+6.3% | Added |
| Mercer Global Advisors Inc | 22,826 | $1.87M | 0.00% | +5,094+28.7% | Added |
| Two Sigma Advisers, LP | 22,500 | $1.85M | 0.00% | +15,900+240.9% | Added |
| Linden Thomas Advisory Services, LLC | 22,354 | $1.83M | 0.19% | −122−0.5% | Reduced |
| State of Michigan Retirement System | 21,988 | $1.80M | 0.01% | −400−1.8% | Reduced |
| MML Investors Services, LLC | 21,413 | $1.76M | 0.00% | +13,323+164.7% | Added |
| Sequoia Financial Advisors, LLC | 21,223 | $1.74M | 0.01% | +1,713+8.8% | Added |
| Journey Retirement Planning & Investment Management LLC | 21,116 | $1.73M | 0.36% | +21,116 | New |
| SG Americas Securities, LLC | 21,063 | $1.73M | 0.00% | −9,958−32.1% | Reduced |
| Parallel Advisors, LLC | 20,832 | $1.71M | 0.03% | +2,204+11.8% | Added |
| Northwestern Mutual Investment Management Company, LLC | 20,820 | $1.71M | 0.02% | −122−0.6% | Reduced |
| New Mexico Educational Retirement Board | 20,800 | $1.71M | 0.05% | 00.0% | Unchanged |
| Davenport & Co LLC | 20,744 | $1.70M | 0.01% | −62−0.3% | Reduced |
| Deutsche Bank AG | 20,718 | $1.70M | 0.00% | −926−4.3% | Reduced |
| Danske Bank A/S | 20,685 | $1.70M | 0.00% | −32,762−61.3% | Reduced |
| Lazard Asset Management LLC | 20,533 | $1.68M | 0.00% | +747+3.8% | Added |
| Sterling Capital Management LLC | 20,322 | $1.67M | 0.03% | −203−1.0% | Reduced |
| Moors & Cabot, Inc. | 20,311 | $1.67M | 0.07% | +12+0.1% | Added |
| Neuberger Berman Group LLC | 19,020 | $1.56M | 0.00% | +1,803+10.5% | Added |
| Oregon Public Employees Retirement Fund | 18,586 | $1.52M | 0.02% | −300−1.6% | Reduced |
| CI Private Wealth, LLC | 18,171 | $1.50M | 0.00% | −3,494−16.1% | Reduced |
| Summit Trail Advisors, LLC | 17,866 | $1.47M | 0.03% | +530+3.1% | Added |
| Landscape Capital Management, L.L.C. | 17,587 | $1.44M | 0.10% | −5,295−23.1% | Reduced |
| Quadrant Capital Group LLC | 17,567 | $1.44M | 0.04% | +9,352+113.8% | Added |
| Utah Retirement Systems | 17,165 | $1.41M | 0.01% | 00.0% | Unchanged |
| Portfolio Design Labs, LLC | 17,144 | $1.41M | 0.23% | −660−3.7% | Reduced |
| Ameritas Investment Partners, Inc. | 17,054 | $1.40M | 0.04% | −558−3.2% | Reduced |
| Caxton Associates LLP | 17,000 | $1.39M | 0.03% | +17,000 | New |
| Susquehanna International Group, LLP | 16,844 | $1.38M | 0.00% | −368−2.1% | Reduced |
| Oppenheimer Asset Management Inc. | 16,787 | $1.38M | 0.02% | −222−1.3% | Reduced |
| Amundi | 16,748 | $1.37M | 0.00% | −45,262−73.0% | Reduced |
| O'Shaughnessy Asset Management, LLC | 16,499 | $1.35M | 0.01% | +87+0.5% | Added |
| Pictet Asset Management Holding SA | 16,029 | $1.31M | 0.00% | +1,250+8.5% | Added |
| Quantbot Technologies LP | 15,630 | $1.28M | 0.04% | +15,630 | New |
| Lafayette Investments, Inc. | 15,271 | $1.25M | 0.24% | −30.0% | Reduced |
| Lido Advisors, LLC | 14,721 | $1.25M | 0.00% | +111+0.8% | Added |
| Gotham Asset Management, LLC | 14,555 | $1.19M | 0.00% | 00.0% | Unchanged |
| Aquatic Capital Management LLC | 14,404 | $1.18M | 0.03% | +14,404 | New |
| Asset Management One Co.,Ltd. | 13,975 | $1.18M | 0.00% | +2,471+21.5% | Added |
| Toronto Dominion Bank | 14,287 | $1.17M | 0.00% | −775−5.1% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 14,165 | $1.16M | 0.04% | +3,027+27.2% | Added |
| Wiley Bros.-Aintree Capital, LLC | 14,097 | $1.16M | 0.01% | +3,621+34.6% | Added |
| Dumont & Blake Investment Advisors LLC | 13,958 | $1.15M | 0.28% | −695−4.7% | Reduced |
| Diversify Advisory Services, LLC | 13,060 | $1.12M | 0.04% | +1,848+16.5% | Added |
| Novem Group | 13,403 | $1.10M | 0.13% | +1,687+14.4% | Added |
| Aviva PLC | 13,398 | $1.10M | 0.00% | +1,629+13.8% | Added |
| Confluence Wealth Services, Inc. | 13,372 | $1.10M | 0.05% | +13,372 | New |
| Redwood Investment Management, LLC | 13,315 | $1.09M | 0.12% | −756−5.4% | Reduced |
| Dynamic Technology Lab Private Ltd | 13,150 | $1.08M | 0.24% | −2,635−16.7% | Reduced |
| Mackenzie Financial Corp | 12,946 | $1.07M | 0.00% | −2,627−16.9% | Reduced |
| Elo Mutual Pension Insurance Co | 12,900 | $1.06M | 0.02% | −15,992−55.4% | Reduced |
| Ascent Group, LLC | 12,851 | $1.05M | 0.04% | −503−3.8% | Reduced |
| Park Avenue Securities LLC | 12,506 | $1.03M | 0.01% | +9,880+376.2% | Added |
| Tudor Investment Corp Et Al | 12,508 | $1.03M | 0.01% | −44,191−77.9% | Reduced |
| Brown Advisory Inc | 12,183 | $999.3K | 0.00% | −267−2.1% | Reduced |
| Glenmede Trust Co NA | 12,147 | $996.3K | 0.00% | +12,147 | New |
| Buckingham Strategic Partners | 11,957 | $980.7K | 0.01% | +141+1.2% | Added |
| Marshall Financial Group LLC | 11,921 | $977.8K | 0.19% | +222+1.9% | Added |
| Principal Securities, Inc. | 11,739 | $962.8K | 0.01% | +9,622+454.5% | Added |
| Voya Investment Management LLC | 11,502 | $943.4K | 0.00% | −2,260−16.4% | Reduced |
| HighTower Advisors, LLC | 11,428 | $937.3K | 0.00% | −148−1.3% | Reduced |
| Jump Financial, LLC | 11,366 | $932.2K | 0.01% | +11,366 | New |
| Pacer Advisors, Inc. | 11,135 | $913.3K | 0.00% | −5,179−31.7% | Reduced |
| JMN Financial LLC | 11,035 | $910.9K | 0.91% | +11,035 | New |
| AIA Group Ltd | 11,063 | $907.4K | 0.01% | +11,063 | New |
| BancorpSouth Bank | 10,825 | $887.9K | 0.05% | +416+4.0% | Added |
| Federation des caisses Desjardins du Quebec | 10,315 | $846.0K | 0.00% | +951+10.2% | Added |
| Squarepoint Ops LLC | 10,224 | $838.6K | 0.00% | +10,224 | New |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 10,124 | $830.4K | 0.01% | +1,979+24.3% | Added |
| Axq Capital, LP | 10,116 | $829.7K | 0.19% | +10,116 | New |
| Commerce Bank | 10,060 | $825.1K | 0.00% | +133+1.3% | Added |
| Ashton Thomas Private Wealth, LLC | 9,980 | $823.7K | 0.02% | −53,922−84.4% | Reduced |
| RBF Capital, LLC | 10,000 | $820.2K | 0.04% | 00.0% | Unchanged |
| Portside Wealth Group, LLC | 9,790 | $803.0K | 0.11% | +597+6.5% | Added |
| Mariner, LLC | 9,776 | $801.4K | 0.00% | +4,840+98.1% | Added |
| TD Waterhouse Canada Inc. | 9,720 | $797.0K | 0.00% | −23,086−70.4% | Reduced |
| Logan Capital Management Inc | 9,700 | $795.6K | 0.03% | 00.0% | Unchanged |
| Cresset Asset Management, LLC | 9,620 | $794.0K | 0.00% | −348−3.5% | Reduced |
| Patton Albertson Miller Group, LLC | 9,650 | $791.5K | 0.09% | 00.0% | Unchanged |
| Harrell Investment Partners, LLC | 9,418 | $772.5K | 0.18% | +184+2.0% | Added |
| Patten & Patten Inc | 9,400 | $771.0K | 0.05% | 00.0% | Unchanged |
| State of Alaska, Department of Revenue | 9,308 | $763.0K | 0.01% | −188,808−95.3% | Reduced |
| Voleon Capital Management LP | 9,287 | $761.7K | 0.02% | −1,739−15.8% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 9,160 | $751.3K | 0.00% | −107−1.2% | Reduced |
| NBC Securities, Inc. | 9,150 | $750.5K | 0.06% | +103+1.1% | Added |
| Xponance, Inc. | 9,135 | $749.3K | 0.01% | −1,806−16.5% | Reduced |
| Brinker Capital Investments, LLC | 9,005 | $738.6K | 0.01% | +95+1.1% | Added |
| Hillsdale Investment Management Inc. | 9,000 | $738.2K | 0.02% | +100+1.1% | Added |
| Odyssean, LLC | 8,958 | $734.7K | 0.53% | +8,958 | New |
| Kestra Private Wealth Services, LLC | 8,930 | $732.4K | 0.01% | +1,203+15.6% | Added |
| Integrated Wealth Concepts LLC | 8,709 | $714.3K | 0.01% | +1,967+29.2% | Added |
| MQS Management LLC | 8,610 | $706.2K | 0.42% | +287+3.4% | Added |
| New York Life Investment Management LLC | 8,578 | $703.6K | 0.01% | −1,028−10.7% | Reduced |
| Magnetar Financial LLC | 8,316 | $682.1K | 0.01% | −43,359−83.9% | Reduced |
| Concurrent Investment Advisors, LLC | 8,197 | $672.3K | 0.01% | +2,316+39.4% | Added |
| Evergreen Capital Management LLC | 8,000 | $658.9K | 0.01% | +409+5.4% | Added |
| Investment Management Corp | 7,789 | $638.9K | 0.54% | 00.0% | Unchanged |
| Swiss Life Asset Management Ltd | 7,682 | $630.1K | 0.00% | +2,949+62.3% | Added |