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, Q2 2025
Institutional positions in SEI Investments Co as of Jun 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
- 564
- +26 vs. Q1 2025
- Shares held
- 90.1M
- −3.55M (−3.8%) vs. Q1 2025
- Total value
- $8.09B
- +$829.7M (+11.4%) vs. Q1 2025
- New holders
- 105
- 184 more added
- Sold out
- 79
- 197 more reduced
8 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2025
Shares, value and share of portfolio for each institution holding SEI Investments Co; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Worldquant Millennium Advisors LLC | 93,917 | $8.44M | 0.04% | +65,207+227.1% | Added |
| Jacobs Levy Equity Management, Inc | 92,541 | $8.32M | 0.03% | −115,812−55.6% | Reduced |
| State of Wisconsin Investment Board | 92,463 | $8.31M | 0.02% | +3,066+3.4% | Added |
| Two Sigma Advisers, LP | 88,400 | $7.94M | 0.02% | +7,000+8.6% | Added |
| Engineers Gate Manager LP | 87,117 | $7.83M | 0.10% | +71,980+475.5% | Added |
| Schroder Investment Management Group | 86,152 | $7.74M | 0.01% | −62,951−42.2% | Reduced |
| Toroso Investments, LLC | 84,133 | $7.56M | 0.05% | +84,133 | New |
| Cerity Partners LLC | 82,433 | $7.41M | 0.01% | +63,150+327.5% | Added |
| Chevy Chase Trust Holdings, Inc. | 79,052 | $7.10M | 0.02% | +1,109+1.4% | Added |
| Umb Bank N A | 77,526 | $6.97M | 0.11% | −4,753−5.8% | Reduced |
| Robeco Institutional Asset Management B.V. | 77,185 | $6.94M | 0.01% | −24,920−24.4% | Reduced |
| Manufacturers Life Insurance Company, The | 76,974 | $6.92M | 0.01% | −3,735−4.6% | Reduced |
| Modera Wealth Management, LLC | 75,719 | $6.80M | 0.08% | −2,797−3.6% | Reduced |
| Danske Bank A/S | 75,571 | $6.79M | 0.02% | −298,664−79.8% | Reduced |
| Kathmere Capital Management, LLC | 74,022 | $6.65M | 0.51% | +74,022 | New |
| Price T Rowe Associates Inc | 72,304 | $6.50M | 0.00% | +3,789+5.5% | Added |
| Los Angeles Capital Management LLC | 70,500 | $6.34M | 0.02% | −115,916−62.2% | Reduced |
| Taylor Hoffman Capital Management LLC | 69,237 | $6.22M | 2.13% | +2,528+3.8% | Added |
| RK Asset Management, LLC | 69,214 | $6.22M | 6.00% | −109−0.2% | Reduced |
| Union Heritage Capital, LLC | 68,700 | $6.17M | 2.15% | 00.0% | Unchanged |
| PDT Partners, LLC | 67,666 | $6.08M | 0.34% | +67,666 | New |
| Southernsun Asset Management, LLC | 66,950 | $6.02M | 0.84% | +114+0.2% | Added |
| HSBC Holdings PLC | 66,561 | $5.97M | 0.00% | −283,953−81.0% | Reduced |
| Public Employees Retirement System of Ohio | 64,909 | $5.83M | 0.02% | +2,523+4.0% | Added |
| Pinebridge Investments, L.P. | 64,686 | $5.81M | 0.05% | −59,831−48.1% | Reduced |
| Banco Santander, S.A. | 63,920 | $5.74M | 0.05% | −43,547−40.5% | Reduced |
| Great West Life Assurance Co | 62,603 | $5.63M | 0.01% | −27,935−30.9% | Reduced |
| Verition Fund Management LLC | 60,330 | $5.42M | 0.03% | +34,091+129.9% | Added |
| Portfolio Design Labs, LLC | 59,777 | $5.37M | 1.05% | −1,301−2.1% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 59,530 | $5.35M | 0.01% | −27,421−31.5% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 59,413 | $5.34M | 0.02% | −10,983−15.6% | Reduced |
| HBK Sorce Advisory LLC | 57,934 | $5.21M | 0.14% | −58−0.1% | Reduced |
| XTX Topco Ltd | 57,884 | $5.20M | 0.22% | +57,884 | New |
| Court Place Advisors, LLC | 56,150 | $5.05M | 1.59% | −1,945−3.3% | Reduced |
| Winton Group Ltd | 56,147 | $5.05M | 0.26% | −14,586−20.6% | Reduced |
| IFG Advisory, LLC | 56,053 | $5.04M | 0.25% | +104+0.2% | Added |
| CBOE Vest Financial, LLC | 54,326 | $4.88M | 0.07% | +21,094+63.5% | Added |
| CWM, LLC | 53,837 | $4.84M | 0.02% | −991−1.8% | Reduced |
| APG Asset Management N.V. | 62,600 | $4.79M | 0.01% | +1,700+2.8% | Added |
| Dark Forest Capital Management LP | 53,278 | $4.79M | 0.19% | +50,383+1,740.3% | Added |
| MetLife Investment Management | 51,101 | $4.59M | 0.03% | −2,492−4.6% | Reduced |
| Ensign Peak Advisors, Inc | 50,643 | $4.55M | 0.01% | −12,794−20.2% | Reduced |
| Wellington Capital Management, Inc. | 50,200 | $4.51M | 6.80% | +50,200 | New |
| Nebula Research & Development LLC | 47,985 | $4.31M | 0.37% | +30,630+176.5% | Added |
| Capital Fund Management S.A. | 47,602 | $4.28M | 0.05% | +30,088+171.8% | Added |
| Moran Wealth Management, LLC | 47,238 | $4.24M | 0.13% | +47,238 | New |
| Mutual of America Capital Management LLC | 47,051 | $4.23M | 0.05% | −2,565−5.2% | Reduced |
| Illinois Municipal Retirement Fund | 46,953 | $4.22M | 0.06% | +20,864+80.0% | Added |
| New York State Common Retirement Fund | 46,500 | $4.18M | 0.01% | +946+2.1% | Added |
| Janus Henderson Group PLC | 46,100 | $4.14M | 0.00% | +42,153+1,068.0% | Added |
| Ascent Group, LLC | 46,015 | $4.13M | 0.16% | −3,091−6.3% | Reduced |
| KBC Group NV | 46,001 | $4.13M | 0.01% | −227,205−83.2% | Reduced |
| Amalgamated Bank | 45,895 | $4.12M | 0.03% | −480−1.0% | Reduced |
| Maltese Capital Management LLC | 45,000 | $4.04M | 0.57% | +15,000+50.0% | Added |
| Nisa Investment Advisors, LLC | 43,835 | $3.94M | 0.02% | +58+0.1% | Added |
| Bokf, NA | 43,280 | $3.89M | 0.06% | +555+1.3% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 43,243 | $3.89M | 0.01% | +43,243 | New |
| Henshaw Capital LLC | 42,843 | $3.85M | 0.15% | +249+0.6% | Added |
| Citigroup Inc | 41,467 | $3.73M | 0.00% | −25,517−38.1% | Reduced |
| Sanctuary Advisors, LLC | 41,117 | $3.69M | 0.02% | −380−0.9% | Reduced |
| Point72 Asset Management, L.P. | 40,700 | $3.66M | 0.01% | +40,700 | New |
| State of Tennessee, Treasury Department | 40,498 | $3.64M | 0.01% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 39,673 | $3.57M | 0.03% | +3,428+9.5% | Added |
| Atria Investments LLC | 39,307 | $3.53M | 0.04% | −1,008−2.5% | Reduced |
| Thrive Wealth Management, LLC | 38,833 | $3.49M | 0.56% | −2,286−5.6% | Reduced |
| Kingsview Wealth Management, LLC | 38,452 | $3.46M | 0.06% | +506+1.3% | Added |
| Graham Capital Management, L.P. | 38,304 | $3.44M | 0.10% | −14,815−27.9% | Reduced |
| US Bancorp | 38,204 | $3.43M | 0.00% | +1,433+3.9% | Added |
| Marshall Wace, LLP | 37,760 | $3.39M | 0.00% | +37,760 | New |
| Horizon Investments, LLC | 37,541 | $3.37M | 0.05% | +37,513+133,975.0% | Added |
| Wealth Alliance Advisory Group, LLC | 37,504 | $3.37M | 0.64% | 00.0% | Unchanged |
| Pathstone Holdings, LLC | 36,612 | $3.29M | 0.01% | −12,631−25.7% | Reduced |
| Susquehanna International Group, LLP | 36,588 | $3.29M | 0.01% | +23,972+190.0% | Added |
| Swiss Life Asset Management Ltd | 36,301 | $3.26M | 0.02% | +18,931+109.0% | Added |
| Ingalls & Snyder LLC | 36,085 | $3.24M | 0.12% | −20−0.1% | Reduced |
| Diversified Trust Co | 36,035 | $3.24M | 0.07% | +26+0.1% | Added |
| NJ State Employees Deferred Compensation Plan | 35,400 | $3.18M | 0.38% | 00.0% | Unchanged |
| CWM Advisors, LLC | 35,391 | $3.18M | 0.35% | +7,291+25.9% | Added |
| TD Waterhouse Canada Inc. | 34,103 | $3.12M | 0.02% | +21,643+173.7% | Added |
| Susquehanna Fundamental Investments, LLC | 34,241 | $3.08M | 0.08% | −4,202−10.9% | Reduced |
| Deutsche Bank AG | 34,217 | $3.07M | 0.00% | −181,995−84.2% | Reduced |
| Sepio Capital, LP | 33,998 | $3.06M | 0.22% | −3,143−8.5% | Reduced |
| Stifel Financial Corp | 33,847 | $3.04M | 0.00% | +17,305+104.6% | Added |
| Yousif Capital Management, LLC | 33,401 | $3.00M | 0.03% | −1,185−3.4% | Reduced |
| JustInvest LLC | 32,704 | $2.94M | 0.03% | +6,041+22.7% | Added |
| Quest Partners LLC | 31,895 | $2.87M | 0.28% | −1,824−5.4% | Reduced |
| Arizona State Retirement System | 31,178 | $2.80M | 0.02% | −509−1.6% | Reduced |
| Teachers Retirement System of the State of Kentucky | 31,054 | $2.79M | 0.02% | 00.0% | Unchanged |
| Neuberger Berman Group LLC | 30,516 | $2.74M | 0.00% | +3,156+11.5% | Added |
| Comerica Bank | 30,473 | $2.74M | 0.01% | +446+1.5% | Added |
| STRS Ohio | 30,411 | $2.73M | 0.01% | +577+1.9% | Added |
| Point72 Asia (Singapore) Pte. Ltd. | 30,195 | $2.71M | 0.48% | +30,195 | New |
| Gries Financial LLC | 29,847 | $2.68M | 0.49% | +1,773+6.3% | Added |
| Johnson Investment Counsel Inc | 29,699 | $2.67M | 0.02% | −92−0.3% | Reduced |
| SummitTX Capital, L.P. | 28,795 | $2.59M | 0.11% | −13,537−32.0% | Reduced |
| O'Shaughnessy Asset Management, LLC | 28,418 | $2.55M | 0.02% | +3,047+12.0% | Added |
| State of New Jersey Common Pension Fund D | 28,046 | $2.52M | 0.01% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 26,957 | $2.42M | 0.00% | +337+1.3% | Added |
| Canada Pension Plan Investment Board | 26,700 | $2.40M | 0.00% | −16,700−38.5% | Reduced |
| Louisiana State Employees Retirement System | 26,600 | $2.39M | 0.04% | −400−1.5% | Reduced |