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 |
|---|---|---|---|---|---|
| Wells Fargo & Company | 130,780 | $11.5M | 0.00% | +18,261+16.2% | Added |
| Legal & General Group Plc | 136,376 | $12.0M | 0.00% | −52,196−27.7% | Reduced |
| Prana Capital Management, LP | 139,223 | $12.2M | 0.37% | −325,018−70.0% | Reduced |
| Advisor Group Holdings, Inc. | 141,682 | $12.4M | 0.01% | −10,000−6.6% | Reduced |
| Bridgewater Associates, LP | 144,423 | $12.7M | 0.05% | −88,252−37.9% | Reduced |
| LPL Financial LLC | 156,953 | $13.8M | 0.00% | −9,862−5.9% | Reduced |
| Foyston, Gordon, & Payne Inc | 157,958 | $13.9M | 2.98% | +171+0.1% | Added |
| BI Asset Management Fondsmaeglerselskab A/S | 160,582 | $14.1M | 0.11% | +90,133+127.9% | Added |
| Royal Bank of Canada | 161,039 | $14.1M | 0.00% | −255,611−61.3% | Reduced |
| Markel Group Inc.SuperinvestorMarkel Group | 173,200 | $15.2M | 0.12% | 00.0% | Unchanged |
| Leith Wheeler Investment Counsel Ltd. | 174,506 | $15.3M | 1.16% | −21,743−11.1% | Reduced |
| Nuveen, LLC | 185,536 | $16.3M | 0.00% | +10,325+5.9% | Added |
| Amundi | 193,135 | $16.9M | 0.00% | +4,572+2.4% | Added |
| Crestwood Advisors Group LLC | 197,095 | $17.3M | 0.26% | +882+0.4% | Added |
| Alps Advisors Inc | 201,072 | $17.6M | 0.08% | −12,820−6.0% | Reduced |
| Swiss National Bank | 202,400 | $17.8M | 0.01% | −3,500−1.7% | Reduced |
| California Public Employees Retirement System | 205,471 | $18.0M | 0.01% | +7,002+3.5% | Added |
| Principal Financial Group Inc | 207,644 | $18.2M | 0.01% | −440.0% | Reduced |
| UBS Asset Management Americas Inc | 216,054 | $19.0M | 0.00% | −239,860−52.6% | Reduced |
| Interval Partners, LP | 226,022 | $19.8M | 0.64% | +89,795+65.9% | Added |
| Toroso Investments, LLC | 226,700 | $19.9M | 0.05% | +65,207+40.4% | Added |
| Rockefeller Capital Management L.P. | 228,023 | $20.0M | 0.03% | +75,458+49.5% | Added |
| Retirement Systems of Alabama | 253,332 | $22.2M | 0.07% | −19,345−7.1% | Reduced |
| JLB & Associates Inc | 261,576 | $22.9M | 3.07% | +2,393+0.9% | Added |
| Millennium Management LLC | 266,217 | $23.3M | 0.02% | +147,452+124.2% | Added |
| Victory Capital Management Inc | 269,995 | $23.7M | 0.01% | −157,596−36.9% | Reduced |
| Renaissance Technologies LLC | 284,726 | $25.0M | 0.03% | −115,100−28.8% | Reduced |
| Public Employees Retirement Association of Colorado | 300,935 | $26.4M | 0.09% | +81,300+37.0% | Added |
| Rhumbline Advisers | 303,552 | $26.6M | 0.02% | −5,935−1.9% | Reduced |
| UBS Group AG | 307,430 | $27.0M | 0.00% | −9,175−2.9% | Reduced |
| Balyasny Asset Management LLC | 308,050 | $27.0M | 0.05% | +82,376+36.5% | Added |
| Arbejdsmarkedets Tillaegspension | 313,600 | $27.5M | 0.60% | −9,818−3.0% | Reduced |
| ProShare Advisors LLC | 319,375 | $28.0M | 0.04% | +18,743+6.2% | Added |
| Thrivent Financial for Lutherans | 324,567 | $28.5M | 0.05% | −1,021−0.3% | Reduced |
| AQR Capital Management LLC | 334,349 | $29.3M | 0.01% | −85,693−20.4% | Reduced |
| JPMorgan Chase & Co | 375,392 | $32.9M | 0.00% | −86,268−18.7% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 421,046 | $36.9M | 0.07% | +78,531+22.9% | Added |
| Azora Capital LP | 443,189 | $38.9M | 1.64% | +443,189 | New |
| Goldman Sachs Group Inc | 461,227 | $40.5M | 0.00% | +137,098+42.3% | Added |
| Natixis Advisors, L.P. | 461,891 | $40.5M | 0.05% | −7,973−1.7% | Reduced |
| Envestnet Asset Management Inc | 478,365 | $42.0M | 0.01% | −20,157−4.0% | Reduced |
| Franklin Resources Inc | 512,826 | $45.0M | 0.01% | −470,287−47.8% | Reduced |
| Voloridge Investment Management, LLC | 518,314 | $45.5M | 0.19% | +106,463+25.8% | Added |
| Quantinno Capital Management LP | 532,381 | $46.7M | 0.06% | +150,020+39.2% | Added |
| First Financial Bankshares Inc | 552,780 | $48.5M | 0.91% | −1,398−0.3% | Reduced |
| Ameriprise Financial Inc | 578,420 | $50.8M | 0.01% | −291,129−33.5% | Reduced |
| Jane Street Group, LLC | 578,801 | $50.8M | 0.03% | +572,501+9,087.3% | Added |
| Raymond James Financial Inc | 583,800 | $51.2M | 0.01% | +11,637+2.0% | Added |
| Vanguard Fiduciary Trust Co | 592,612 | $52.0M | 0.01% | +2,552+0.4% | Added |
| Clark Capital Management Group, Inc. | 638,934 | $56.0M | 0.31% | −198,911−23.7% | Reduced |
| Arrowstreet Capital, Limited Partnership | 660,498 | $57.9M | 0.03% | +92,531+16.3% | Added |
| Charles Schwab Investment Management Inc | 695,446 | $61.0M | 0.01% | −1,027−0.1% | Reduced |
| American Capital Management Inc | 745,323 | $65.4M | 2.93% | −23,292−3.0% | Reduced |
| Barclays PLC | 825,215 | $72.4M | 0.02% | +444,238+116.6% | Added |
| Norges Bank | 887,116 | $77.8M | 0.01% | +887,116 | New |
| Bank of New York Mellon Corp | 894,194 | $78.4M | 0.01% | −42,108−4.5% | Reduced |
| Northern Trust Corp | 914,907 | $80.2M | 0.01% | +9,300+1.0% | Added |
| Boston Trust Walden Corp | 991,300 | $86.9M | 0.66% | −48,431−4.7% | Reduced |
| Caisse de Depot Et Placement du Quebec | 1,002,445 | $87.9M | 0.13% | −195,644−16.3% | Reduced |
| Royce & Associates LP | 1,050,287 | $92.1M | 0.74% | +53,831+5.4% | Added |
| Invesco Ltd. | 1,110,829 | $97.4M | 0.01% | −34,575−3.0% | Reduced |
| Beutel, Goodman & Co Ltd. | 1,494,684 | $131.1M | 0.96% | −278,470−15.7% | Reduced |
| First Trust Advisors LP | 1,501,972 | $131.7M | 0.08% | −320,697−17.6% | Reduced |
| Dimensional Fund Advisors LP | 1,962,762 | $172.1M | 0.03% | +89,564+4.8% | Added |
| Lord, Abbett & Co. LLC | 2,309,004 | $202.5M | 0.58% | +104,625+4.7% | Added |
| FMR LLC | 2,510,218 | $220.2M | 0.01% | +417,719+20.0% | Added |
| Bank of America Corp | 2,908,071 | $255.1M | 0.02% | −12,435−0.4% | Reduced |
| Geode Capital Management, LLC | 2,953,161 | $259.1M | 0.01% | +122,829+4.3% | Added |
| Boston Partners | 3,093,791 | $271.4M | 0.24% | +1,323,752+74.8% | Added |
| Morgan Stanley | 4,119,203 | $361.3M | 0.02% | −673,076−14.0% | Reduced |
| State Street Corp | 4,251,584 | $372.9M | 0.01% | +66,406+1.6% | Added |
| Vanguard Capital Management LLC | 4,686,241 | $411.0M | 0.01% | −55,475−1.2% | Reduced |
| Vanguard Portfolio Management LLC | 6,140,822 | $538.6M | 0.02% | +15,179+0.2% | Added |
| Loomis Sayles & Co L P | 8,482,052 | $744.0M | 0.93% | −146,827−1.7% | Reduced |
| BlackRock, Inc. | 9,927,545 | $870.7M | 0.01% | −182,792−1.8% | Reduced |
| PFA Pension, Forsikringsaktieselskab | 0 | $0 | 0.00% | −519,311−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −124,992−100.0% | Sold out |
| CWM Advisors, LLC | 0 | $0 | 0.00% | −49,401−100.0% | Sold out |
| APG Asset Management N.V. | 0 | $0 | 0.00% | −54,829−100.0% | Sold out |
| Allianz Asset Management GmbH | 0 | $0 | 0.00% | −45,291−100.0% | Sold out |
| Smithbridge Asset Management Inc | 0 | $0 | 0.00% | −26,201−100.0% | Sold out |
| Bank of Nova Scotia | 0 | $0 | 0.00% | −26,171−100.0% | Sold out |
| Diversify Wealth Management, LLC | 0 | $0 | 0.00% | −13,551−100.0% | Sold out |
| Headlands Technologies LLC | 0 | $0 | 0.00% | −15,462−100.0% | Sold out |
| Elo Mutual Pension Insurance Co | 0 | $0 | 0.00% | −15,328−100.0% | Sold out |
| Novem Group | 0 | $0 | 0.00% | −13,101−100.0% | Sold out |
| Mariner, LLC | 0 | $0 | 0.00% | −11,603−100.0% | Sold out |
| Landscape Capital Management, L.L.C. | 0 | $0 | 0.00% | −10,925−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −10,272−100.0% | Sold out |
| Integrated Wealth Concepts LLC | 0 | $0 | 0.00% | −9,190−100.0% | Sold out |
| Danske Bank A/S | 0 | $0 | 0.00% | −8,987−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −8,605−100.0% | Sold out |
| Inspire Advisors, LLC | 0 | $0 | 0.00% | −7,942−100.0% | Sold out |
| FORA Capital, LLC | 0 | $0 | 0.00% | −7,416−100.0% | Sold out |
| Ameritas Advisory Services, LLC | 0 | $0 | 0.00% | −7,167−100.0% | Sold out |
| Advisors Preferred, LLC | 0 | $0 | 0.00% | −6,571−100.0% | Sold out |
| Odyssean, LLC | 0 | $0 | 0.00% | −6,482−100.0% | Sold out |
| Haverford Trust Co | 0 | $0 | 0.00% | −6,250−100.0% | Sold out |
| Procyon Private Wealth Partners, LLC | 0 | $0 | 0.00% | −5,909−100.0% | Sold out |
| Polymer Capital Management (US) LLC | 0 | $0 | 0.00% | −5,049−100.0% | Sold out |