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 2026
Institutional positions in SEI Investments Co as of Jun 30, 2026. 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
- 575
- +16 vs. Q1 2026
- Shares held
- 90.5M
- +664.6K (+0.7%) vs. Q1 2026
- Total value
- $7.94B
- +$888.3M (+12.6%) vs. Q1 2026
- New holders
- 77
- 173 more added
- Sold out
- 61
- 226 more reduced
10 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 2026
Shares, value and share of portfolio for each institution holding SEI Investments Co; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Mutual of America Capital Management LLC | 34,036 | $2.99M | 0.03% | −1,563−4.4% | Reduced |
| Third View Private Wealth, LLC | 34,268 | $3.01M | 0.37% | −2,237−6.1% | Reduced |
| Cerity Partners LLC | 34,363 | $3.01M | 0.00% | +1,242+3.7% | Added |
| Credit Agricole S A | 34,621 | $3.04M | 0.01% | 00.0% | Unchanged |
| Neuberger Berman Group LLC | 34,896 | $3.06M | 0.00% | +13,745+65.0% | Added |
| Abn Amro Investment Solutions | 35,510 | $3.11M | 0.03% | −300−0.8% | Reduced |
| Diversified Trust Co | 35,572 | $3.12M | 0.05% | +80+0.2% | Added |
| Henshaw Capital LLC | 35,944 | $3.15M | 0.10% | −7,157−16.6% | Reduced |
| Vanguard Global Advisers, LLC | 35,945 | $3.15M | 0.00% | −1,981−5.2% | Reduced |
| Colony Group, LLC | 36,747 | $3.22M | 0.00% | −72−0.2% | Reduced |
| Crossmark Global Holdings, Inc. | 37,301 | $3.27M | 0.04% | +2,800+8.1% | Added |
| Wealth Alliance Advisory Group, LLC | 37,504 | $3.29M | 0.48% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 37,708 | $3.31M | 0.01% | 00.0% | Unchanged |
| Aquatic Capital Management LLC | 37,864 | $3.32M | 0.11% | +30,406+407.7% | Added |
| State of Tennessee, Treasury Department | 38,148 | $3.35M | 0.01% | −687−1.8% | Reduced |
| Engineers Gate Manager LP | 38,836 | $3.41M | 0.04% | −5,197−11.8% | Reduced |
| Atria Investments LLC | 39,169 | $3.44M | 0.03% | −288−0.7% | Reduced |
| Mercer Global Advisors Inc | 40,231 | $3.53M | 0.00% | +13,427+50.1% | Added |
| Graham Capital Management, L.P. | 40,859 | $3.58M | 0.10% | +7,015+20.7% | Added |
| Moran Wealth Management, LLC | 41,009 | $3.60M | 0.10% | −1,947−4.5% | Reduced |
| New Age Alpha Advisors, LLC | 41,141 | $3.61M | 0.15% | −4,415−9.7% | Reduced |
| Morningstar Investment Management LLC | 46,245 | $3.63M | 0.22% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 41,900 | $3.68M | 0.00% | 00.0% | Unchanged |
| Oxbow Advisors, LLC | 42,099 | $3.69M | 0.30% | +257+0.6% | Added |
| Ingalls & Snyder LLC | 42,356 | $3.71M | 0.10% | +2,503+6.3% | Added |
| Weiss Asset Management LP | 42,574 | $3.73M | 0.04% | +42,574 | New |
| Amalgamated Bank | 42,927 | $3.77M | 0.03% | +260+0.6% | Added |
| Treasurer of the State of North Carolina | 43,317 | $3.80M | 0.01% | −480−1.1% | Reduced |
| Illinois Municipal Retirement Fund | 43,994 | $3.86M | 0.04% | −4,045−8.4% | Reduced |
| Polar Asset Management Partners Inc. | 44,075 | $3.87M | 0.07% | +44,075 | New |
| MetLife Investment Management | 44,178 | $3.87M | 0.02% | −1,673−3.6% | Reduced |
| Jump Financial, LLC | 44,571 | $3.91M | 0.03% | +38,115+590.4% | Added |
| Jupiter Topco LLC | 45,122 | $3.96M | 0.00% | +45,122 | New |
| Vident Advisory, LLC | 45,379 | $3.98M | 0.03% | +351+0.8% | Added |
| Police & Firemen's Retirement System of New Jersey | 45,802 | $4.02M | 0.03% | +2,208+5.1% | Added |
| Brandes Investment Partners, LP | 45,834 | $4.02M | 0.03% | +5,230+12.9% | Added |
| Russell Investments Group, Ltd. | 46,303 | $4.06M | 0.00% | −1,300−2.7% | Reduced |
| Nisa Investment Advisors, LLC | 47,165 | $4.14M | 0.01% | +3,038+6.9% | Added |
| Public Employees Retirement System of Ohio | 47,868 | $4.20M | 0.01% | −9,218−16.1% | Reduced |
| Sanctuary Advisors, LLC | 48,143 | $4.22M | 0.02% | −466−1.0% | Reduced |
| TD Asset Management Inc | 48,200 | $4.23M | 0.00% | −59,356−55.2% | Reduced |
| Robeco Institutional Asset Management B.V. | 50,175 | $4.40M | 0.01% | −54,599−52.1% | Reduced |
| Martingale Asset Management L P | 50,324 | $4.41M | 0.10% | −35,206−41.2% | Reduced |
| HRT Financial LP | 50,793 | $4.46M | 0.01% | +50,793 | New |
| Los Angeles Capital Management LLC | 51,969 | $4.56M | 0.02% | −6,388−10.9% | Reduced |
| Holocene Advisors, LP | 52,277 | $4.59M | 0.01% | +10,221+24.3% | Added |
| Vestcor Inc | 52,801 | $4.63M | 0.11% | −58,817−52.7% | Reduced |
| MAI Capital Management | 52,803 | $4.63M | 0.02% | −1,184−2.2% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 53,464 | $4.69M | 0.00% | +51,991+3,529.6% | Added |
| SummitTX Capital, L.P. | 55,704 | $4.89M | 0.13% | +47,542+582.5% | Added |
| IFG Advisory, LLC | 59,268 | $5.20M | 0.18% | +59,268 | New |
| Banco Santander, S.A. | 59,549 | $5.22M | 0.03% | +12,000+25.2% | Added |
| Lazard Asset Management LLC | 60,499 | $5.31M | 0.01% | +22,462+59.1% | Added |
| Capital Fund Management S.A. | 61,769 | $5.42M | 0.04% | +4,595+8.0% | Added |
| HBK Sorce Advisory LLC | 51,793 | $5.43M | 0.11% | +50.0% | Added |
| BNP Paribas Arbitrage, SA | 63,560 | $5.57M | 0.00% | +23,343+58.0% | Added |
| Southernsun Asset Management, LLC | 63,671 | $5.58M | 0.75% | −3,732−5.5% | Reduced |
| Modera Wealth Management, LLC | 64,015 | $5.61M | 0.06% | −2,340−3.5% | Reduced |
| TD Waterhouse Canada Inc. | 62,601 | $5.64M | 0.01% | −1,093−1.7% | Reduced |
| CBOE Vest Financial, LLC | 64,900 | $5.69M | 0.06% | −17,671−21.4% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 65,465 | $5.74M | 0.01% | +2,266+3.6% | Added |
| Brevan Howard Capital Management LP | 66,482 | $5.83M | 0.08% | +66,482 | New |
| Union Heritage Capital, LLC | 68,700 | $6.03M | 2.04% | 00.0% | Unchanged |
| Great West Life Assurance Co | 69,976 | $6.13M | 0.01% | −1,160−1.6% | Reduced |
| Manufacturers Life Insurance Company, The | 70,000 | $6.14M | 0.00% | −686−1.0% | Reduced |
| HSBC Holdings PLC | 70,381 | $6.15M | 0.00% | −13,083−15.7% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 71,582 | $6.28M | 0.02% | −669−0.9% | Reduced |
| Ossiam | 73,055 | $6.41M | 0.08% | +73,055 | New |
| Thrive Wealth Management, LLC | 73,935 | $6.48M | 0.83% | −2,844−3.7% | Reduced |
| Taylor Hoffman Capital Management LLC | 74,794 | $6.56M | 1.59% | +2,389+3.3% | Added |
| Hahn Capital Management LLC | 81,535 | $7.15M | 4.34% | −2,839−3.4% | Reduced |
| Teacher Retirement System of Texas | 82,095 | $7.20M | 0.02% | −21,146−20.5% | Reduced |
| State of Wisconsin Investment Board | 82,635 | $7.25M | 0.01% | −4,210−4.8% | Reduced |
| Pathstone Holdings, LLC | 82,758 | $7.26M | 0.02% | +51,820+167.5% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 85,026 | $7.46M | 0.01% | +23,724+38.7% | Added |
| Horizon Investments, LLC | 86,966 | $7.63M | 0.08% | +83,862+2,701.7% | Added |
| Man Group plc | 87,503 | $7.67M | 0.01% | −273,407−75.8% | Reduced |
| Karl Kapital LLC | 88,816 | $7.79M | 4.64% | +16,676+23.1% | Added |
| Schonfeld Strategic Advisors LLC | 90,061 | $7.90M | 0.04% | +32,171+55.6% | Added |
| Citadel Advisors LLC | 92,433 | $8.11M | 0.00% | +50,464+120.2% | Added |
| Citigroup Inc | 93,051 | $8.16M | 0.00% | +59,097+174.1% | Added |
| Creative Planning | 95,983 | $8.42M | 0.00% | −20,844−17.8% | Reduced |
| Price T Rowe Associates Inc | 97,931 | $8.59M | 0.00% | +6,048+6.6% | Added |
| Stifel Financial Corp | 99,780 | $8.75M | 0.01% | −1,438−1.4% | Reduced |
| Kathmere Capital Management, LLC | 100,611 | $8.82M | 0.47% | +1,126+1.1% | Added |
| American Century Companies Inc | 101,518 | $8.90M | 0.00% | +6,288+6.6% | Added |
| New York State Teachers Retirement System | 101,601 | $8.91M | 0.02% | −6,983−6.4% | Reduced |
| Vanguard Asset Management, Ltd | 101,909 | $8.94M | 0.01% | +11,863+13.2% | Added |
| CI Private Wealth, LLC | 102,534 | $8.99M | 0.01% | +10,246+11.1% | Added |
| Van Eck Associates Corp | 102,923 | $9.03M | 0.01% | −3,297−3.1% | Reduced |
| State Board of Administration of Florida Retirement System | 103,180 | $9.05M | 0.02% | −5,911−5.4% | Reduced |
| Fideuram Asset Management (Ireland) dac | 113,187 | $9.14M | 0.18% | +113,187 | New |
| Truist Financial Corp | 106,452 | $9.34M | 0.01% | −4,214−3.8% | Reduced |
| Alliancebernstein L.P. | 119,244 | $9.36M | 0.00% | −7,232−5.7% | Reduced |
| King Luther Capital Management Corp | 111,077 | $9.74M | 0.04% | +1,707+1.6% | Added |
| Bank of Montreal | 116,432 | $10.2M | 0.00% | +3,065+2.7% | Added |
| California State Teachers Retirement System | 117,300 | $10.3M | 0.01% | −8,566−6.8% | Reduced |
| Two Sigma Investments, LP | 118,660 | $10.4M | 0.01% | +99,460+518.0% | Added |
| Wealth Enhancement Advisory Services, LLC | 119,448 | $11.1M | 0.02% | +106,374+813.6% | Added |
| KLP Kapitalforvaltning AS | 127,800 | $11.2M | 0.04% | 00.0% | Unchanged |