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, Q1 2025
Institutional positions in SEI Investments Co as of Mar 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
- 546
- +16 vs. Q4 2024
- Shares held
- 93.7M
- +2.84M (+3.1%) vs. Q4 2024
- Total value
- $7.27B
- −$226.7M (−3.0%) vs. Q4 2024
- New holders
- 68
- 192 more added
- Sold out
- 52
- 186 more reduced
10 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding SEI Investments Co; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Mariner, LLC | 5,070 | $393.6K | 0.00% | −3,334−39.7% | Reduced |
| MJP Associates Inc | 5,277 | $409.7K | 0.07% | +911+20.9% | Added |
| SG Americas Securities, LLC | 5,488 | $426.0K | 0.00% | −19,311−77.9% | Reduced |
| Pacer Advisors, Inc. | 5,533 | $429.5K | 0.00% | −9,074−62.1% | Reduced |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 5,556 | $431.3K | 0.02% | −1,983−26.3% | Reduced |
| Concurrent Investment Advisors, LLC | 5,600 | $434.7K | 0.01% | +160+2.9% | Added |
| Ashton Thomas Securities, LLC | 5,666 | $439.9K | 0.12% | −303−5.1% | Reduced |
| United Services Automobile Association | 5,770 | $444.9K | 0.01% | +5,770 | New |
| AdvisorShares Investments LLC | 5,920 | $457.5K | 0.09% | −1,000−14.5% | Reduced |
| Legacy Advisors, LLC | 5,980 | $464.2K | 0.05% | +1,187+24.8% | Added |
| GAMMA Investing LLC | 6,061 | $470.5K | 0.04% | +1,192+24.5% | Added |
| Panagora Asset Management Inc | 6,094 | $473.1K | 0.00% | 00.0% | Unchanged |
| Prudential PLC | 6,109 | $474.2K | 0.00% | +3,680+151.5% | Added |
| Advisor OS, LLC | 6,131 | $476.0K | 0.05% | +1,028+20.1% | Added |
| Clearstead Advisors, LLC | 6,147 | $477.2K | 0.01% | +6,030+5,153.8% | Added |
| Hennion & Walsh Asset Management, Inc. | 6,169 | $478.9K | 0.02% | −5,553−47.4% | Reduced |
| DekaBank Deutsche Girozentrale | 6,375 | $486.0K | 0.00% | −48−0.7% | Reduced |
| Beaumont Financial Advisors, LLC | 6,292 | $488.4K | 0.04% | 00.0% | Unchanged |
| Lansing Street Advisors | 6,316 | $490.3K | 0.16% | 00.0% | Unchanged |
| Gulf International Bank (UK) Ltd | 6,326 | $491.0K | 0.02% | −2,510−28.4% | Reduced |
| Lecap Asset Management Ltd | 6,338 | $492.0K | 0.11% | +515+8.8% | Added |
| Baker Tilly Wealth Management, LLC | 6,391 | $496.2K | 0.19% | +488+8.3% | Added |
| Fullerton Fund Management Co Ltd. | 6,415 | $498.0K | 0.03% | +6,415 | New |
| Portside Wealth Group, LLC | 6,429 | $499.1K | 0.08% | +1,003+18.5% | Added |
| Cetera Investment Advisers | 6,582 | $511.0K | 0.00% | +1,364+26.1% | Added |
| Kahn Brothers Group Inc | 6,596 | $512.0K | 0.10% | +1,449+28.2% | Added |
| MML Investors Services, LLC | 6,611 | $513.0K | 0.00% | +1,798+37.4% | Added |
| Haverford Trust Co | 6,613 | $513.4K | 0.01% | 00.0% | Unchanged |
| Commonwealth Equity Services, LLC | 6,637 | $515.0K | 0.00% | +2,187+49.1% | Added |
| Fayez Sarofim & Co | 6,675 | $518.2K | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 6,961 | $540.5K | 0.00% | −27,807−80.0% | Reduced |
| Aster Capital Management (DIFC) Ltd | 6,761 | $541.2K | 0.10% | +6,761 | New |
| Securian Asset Management, Inc | 7,306 | $567.2K | 0.02% | −100−1.4% | Reduced |
| Mercer Global Advisors Inc | 7,343 | $569.5K | 0.00% | +165+2.3% | Added |
| Par Capital Management Inc | 7,500 | $582.2K | 0.02% | 00.0% | Unchanged |
| Nilsine Partners, LLC | 7,579 | $588.4K | 0.06% | −897−10.6% | Reduced |
| MQS Management LLC | 7,683 | $596.4K | 0.34% | +7,683 | New |
| Metis Global Partners, LLC | 7,728 | $599.9K | 0.02% | +933+13.7% | Added |
| Investment Management Corp | 7,789 | $604.7K | 0.55% | 00.0% | Unchanged |
| Aviva PLC | 7,937 | $616.1K | 0.00% | +565+7.7% | Added |
| Centiva Capital, LP | 7,967 | $618.5K | 0.04% | +7,967 | New |
| Wellington Shields & Co., LLC | 8,000 | $621.0K | 0.19% | −1,000−11.1% | Reduced |
| Grantham, Mayo, Van Otterloo & Co. LLC | 8,224 | $638.4K | 0.00% | +8,224 | New |
| Tredje AP-fonden | 8,427 | $654.2K | 0.01% | 00.0% | Unchanged |
| Glenmede Trust Co NA | 8,451 | $656.1K | 0.00% | −179−2.1% | Reduced |
| Ghe, LLC | 8,532 | $662.0K | 0.30% | −594−6.5% | Reduced |
| South Dakota Investment Council | 8,528 | $662.0K | 0.01% | 00.0% | Unchanged |
| Creative Planning | 8,609 | $668.3K | 0.00% | −1,422−14.2% | Reduced |
| Daiwa Securities Group Inc. | 8,700 | $675.0K | 0.00% | +300+3.6% | Added |
| NBC Securities, Inc. | 8,990 | $697.0K | 0.06% | +8,982+112,275.0% | Added |
| Nordea Investment Management AB | 9,422 | $723.2K | 0.00% | +33+0.4% | Added |
| Crossmark Global Holdings, Inc. | 9,339 | $725.0K | 0.01% | +970+11.6% | Added |
| State of Wyoming | 9,461 | $734.5K | 0.10% | +5,934+168.2% | Added |
| Patten & Patten Inc | 9,500 | $737.5K | 0.05% | 00.0% | Unchanged |
| United Super Pty Ltd in its capacity as Trustee for the Construction & Building Unions Superannuation Fund | 9,600 | $745.2K | 0.03% | +1,000+11.6% | Added |
| Patton Albertson Miller Group, LLC | 9,650 | $749.1K | 0.11% | 00.0% | Unchanged |
| Logan Capital Management Inc | 9,700 | $753.0K | 0.03% | 00.0% | Unchanged |
| CoreCap Advisors, LLC | 9,706 | $753.5K | 0.03% | +589+6.5% | Added |
| Petrus Trust Company, LTA | 9,787 | $759.8K | 0.07% | +282+3.0% | Added |
| First Citizens Bank & Trust Co | 9,951 | $772.5K | 0.02% | +96+1.0% | Added |
| RBF Capital, LLC | 10,000 | $776.3K | 0.05% | 00.0% | Unchanged |
| Bayforest Capital Ltd | 10,021 | $777.9K | 0.34% | +6,265+166.8% | Added |
| Commerce Bank | 10,252 | $795.9K | 0.01% | +96+0.9% | Added |
| BancorpSouth Bank | 10,551 | $819.1K | 0.06% | +121+1.2% | Added |
| Buckingham Strategic Partners | 10,693 | $830.1K | 0.01% | −1,667−13.5% | Reduced |
| Federated Hermes, Inc. | 10,854 | $842.6K | 0.00% | +1,657+18.0% | Added |
| Hillsdale Investment Management Inc. | 11,000 | $853.9K | 0.04% | +200+1.9% | Added |
| New York Life Investment Management LLC | 11,129 | $863.9K | 0.01% | +664+6.3% | Added |
| Brinker Capital Investments, LLC | 11,353 | $881.3K | 0.01% | −2,656−19.0% | Reduced |
| Orion Portfolio Solutions, LLC | 11,353 | $881.3K | 0.01% | −2,656−19.0% | Reduced |
| HighTower Advisors, LLC | 11,497 | $892.5K | 0.00% | −16−0.1% | Reduced |
| Envestnet Portfolio Solutions, Inc. | 11,603 | $900.7K | 0.00% | +484+4.4% | Added |
| Elo Mutual Pension Insurance Co | 11,928 | $926.0K | 0.02% | −1,312−9.9% | Reduced |
| OP Asset Management Ltd | 11,958 | $928.3K | 0.02% | +11,958 | New |
| CI Private Wealth, LLC | 12,335 | $957.6K | 0.00% | −268−2.1% | Reduced |
| TD Waterhouse Canada Inc. | 12,460 | $962.3K | 0.01% | −559−4.3% | Reduced |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 12,553 | $974.5K | 0.01% | +4,701+59.9% | Added |
| Susquehanna International Group, LLP | 12,616 | $979.4K | 0.00% | −10,682−45.8% | Reduced |
| Mackenzie Financial Corp | 12,623 | $979.9K | 0.00% | +2,457+24.2% | Added |
| FORA Capital, LLC | 12,758 | $990.4K | 0.10% | +12,758 | New |
| 1832 Asset Management L.P. | 13,625 | $1.06M | 0.00% | +553+4.2% | Added |
| Cresset Asset Management, LLC | 13,760 | $1.07M | 0.01% | −1,529−10.0% | Reduced |
| Nissay Asset Management Corp | 13,897 | $1.08M | 0.01% | −18−0.1% | Reduced |
| Picton Mahoney Asset Management | 14,502 | $1.13M | 0.04% | +14,502 | New |
| Gotham Asset Management, LLC | 14,555 | $1.13M | 0.01% | 00.0% | Unchanged |
| Ashton Thomas Private Wealth, LLC | 14,711 | $1.14M | 0.04% | −1,164−7.3% | Reduced |
| Donald L. Hagan, LLC | 14,735 | $1.14M | 0.60% | +261+1.8% | Added |
| Intech Investment Management LLC | 14,888 | $1.16M | 0.01% | −2,460−14.2% | Reduced |
| Brown Advisory Inc | 14,939 | $1.16M | 0.00% | −553,088−97.4% | Reduced |
| Engineers Gate Manager LP | 15,137 | $1.18M | 0.02% | −4,062−21.2% | Reduced |
| Clark Capital Management Group, Inc. | 15,195 | $1.18M | 0.01% | +183+1.2% | Added |
| Headlands Technologies LLC | 15,281 | $1.19M | 0.14% | +12,293+411.4% | Added |
| Lafayette Investments, Inc. | 15,419 | $1.20M | 0.25% | −480−3.0% | Reduced |
| Pensionfund Sabic | 15,600 | $1.21M | 0.36% | −3,400−17.9% | Reduced |
| Ontario Teachers Pension Plan Board | 15,697 | $1.22M | 0.02% | +6,742+75.3% | Added |
| Parallel Advisors, LLC | 15,718 | $1.22M | 0.03% | −1,543−8.9% | Reduced |
| IFM Investors Pty Ltd | 16,391 | $1.27M | 0.01% | 00.0% | Unchanged |
| Stifel Financial Corp | 16,542 | $1.28M | 0.00% | −765−4.4% | Reduced |
| Utah Retirement Systems | 16,629 | $1.29M | 0.01% | −145−0.9% | Reduced |
| Voya Investment Management LLC | 16,716 | $1.30M | 0.00% | +857+5.4% | Added |