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, Q3 2023
Institutional positions in SEI Investments Co as of Sep 30, 2023. 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
- 462
- +7 vs. Q2 2023
- Shares held
- 93.4M
- +292.8K (+0.3%) vs. Q2 2023
- Total value
- $5.63B
- +$106.9M (+1.9%) vs. Q2 2023
- New holders
- 47
- 152 more added
- Sold out
- 40
- 165 more reduced
3 institutions that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2023: 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, Q3 2023
Shares, value and share of portfolio for each institution holding SEI Investments Co; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 11,983,461 | $721.8M | 0.02% | −116,777−1.0% | Reduced |
| BlackRock Inc. | 11,359,942 | $684.2M | 0.02% | +158,281+1.4% | Added |
| Loomis Sayles & Co L P | 9,613,174 | $579.0M | 0.99% | −327,453−3.3% | Reduced |
| Morgan Stanley | 5,948,658 | $358.3M | 0.04% | −320,175−5.1% | Reduced |
| State Street Corp | 5,796,371 | $349.1M | 0.02% | −382,381−6.2% | Reduced |
| Beutel, Goodman & Co Ltd. | 4,036,374 | $243.1M | 1.44% | −9150.0% | Reduced |
| Bank of America Corp | 3,042,686 | $183.3M | 0.02% | −72,288−2.3% | Reduced |
| Geode Capital Management, LLC | 1,940,629 | $116.8M | 0.01% | +150,723+8.4% | Added |
| Great West Life Assurance Co | 1,578,974 | $95.0M | 0.23% | −315,065−16.6% | Reduced |
| Royce & Associates LP | 1,428,297 | $86.0M | 0.88% | −35,060−2.4% | Reduced |
| Citadel Advisors LLC | 1,297,743 | $78.2M | 0.08% | −155,408−10.7% | Reduced |
| Boston Trust Walden Corp | 1,290,344 | $77.7M | 0.65% | −808−0.1% | Reduced |
| Tandem Investment Advisors, Inc. | 1,218,267 | $73.4M | 3.10% | +61,228+5.3% | Added |
| Bank of New York Mellon Corp | 1,182,085 | $71.2M | 0.02% | −34,427−2.8% | Reduced |
| Dimensional Fund Advisors LP | 1,177,771 | $70.9M | 0.02% | −4,355−0.4% | Reduced |
| Northern Trust Corp | 1,143,777 | $68.9M | 0.01% | +70,937+6.6% | Added |
| Invesco Ltd. | 1,125,659 | $67.8M | 0.02% | +475,226+73.1% | Added |
| Legal & General Group Plc | 952,364 | $57.4M | 0.02% | −12,141−1.3% | Reduced |
| Natixis Advisors, L.P. | 704,010 | $42.4M | 0.13% | −32,675−4.4% | Reduced |
| UBS Asset Management Americas Inc | 698,628 | $42.1M | 0.02% | −52,813−7.0% | Reduced |
| Brown Advisory Inc | 681,637 | $41.1M | 0.07% | +17,740+2.7% | Added |
| Royal Bank of Canada | 649,468 | $39.1M | 0.01% | −26,128−3.9% | Reduced |
| Charles Schwab Investment Management Inc | 642,965 | $38.7M | 0.01% | +3,535+0.6% | Added |
| Norges Bank | 630,628 | $38.0M | 0.01% | +70,200+12.5% | Added |
| Ameriprise Financial Inc | 597,348 | $36.0M | 0.01% | −27,636−4.4% | Reduced |
| Millennium Management LLC | 566,246 | $34.1M | 0.04% | −227,345−28.6% | Reduced |
| HSBC Holdings PLC | 547,262 | $33.0M | 0.04% | −6,835−1.2% | Reduced |
| ProShare Advisors LLC | 546,705 | $32.9M | 0.10% | −10,711−1.9% | Reduced |
| Acadian Asset Management LLC | 477,981 | $28.8M | 0.12% | +358,282+299.3% | Added |
| Raymond James & Associates | 474,836 | $28.6M | 0.02% | +18,397+4.0% | Added |
| Qube Research & Technologies Ltd | 404,014 | $24.3M | 0.07% | +55,304+15.9% | Added |
| Principal Financial Group Inc | 381,249 | $23.0M | 0.02% | −9,005−2.3% | Reduced |
| Envestnet Asset Management Inc | 381,037 | $22.9M | 0.01% | +155,991+69.3% | Added |
| Goldman Sachs Group Inc | 368,545 | $22.2M | 0.01% | +31,702+9.4% | Added |
| FMR LLC | 360,732 | $21.7M | 0.00% | +109,962+43.8% | Added |
| Rhumbline Advisers | 343,081 | $20.7M | 0.02% | −5,066−1.5% | Reduced |
| Bank of Montreal | 312,534 | $19.3M | 0.01% | +205,811+192.8% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 317,493 | $19.1M | 0.02% | −7,331−2.3% | Reduced |
| American Capital Management Inc | 317,237 | $19.1M | 0.74% | −50,170−13.7% | Reduced |
| AQR Capital Management LLC | 295,490 | $17.8M | 0.04% | −102,273−25.7% | Reduced |
| JPMorgan Chase & Co | 295,040 | $17.8M | 0.00% | −62,254−17.4% | Reduced |
| Amundi | 307,721 | $17.4M | 0.01% | −14,794−4.6% | Reduced |
| JLB & Associates Inc | 287,316 | $17.3M | 2.71% | −14,200−4.7% | Reduced |
| Nuveen Asset Management, LLC | 286,391 | $17.2M | 0.01% | −5,185−1.8% | Reduced |
| Retirement Systems of Alabama | 272,300 | $16.4M | 0.08% | −4,961−1.8% | Reduced |
| New York State Common Retirement Fund | 263,437 | $15.9M | 0.02% | −16,182−5.8% | Reduced |
| Thrivent Financial for Lutherans | 254,946 | $15.4M | 0.04% | +228,796+874.9% | Added |
| Advisor Group Holdings, Inc. | 248,540 | $15.0M | 0.02% | +119,708+92.9% | Added |
| Barclays PLC | 247,271 | $14.9M | 0.01% | +106,967+76.2% | Added |
| Renaissance Technologies LLC | 238,926 | $14.4M | 0.02% | −90,500−27.5% | Reduced |
| KBC Group NV | 226,453 | $13.6M | 0.06% | −41,775−15.6% | Reduced |
| Crestwood Advisors Group LLC | 224,417 | $13.5M | 0.35% | +1,022+0.5% | Added |
| Citigroup Inc | 220,716 | $13.3M | 0.02% | +12,486+6.0% | Added |
| Leith Wheeler Investment Counsel Ltd. | 219,906 | $13.2M | 1.75% | +28,741+15.0% | Added |
| Caisse de Depot Et Placement du Quebec | 210,128 | $12.7M | 0.04% | +103,468+97.0% | Added |
| State of Alaska, Department of Revenue | 199,985 | $12.0M | 0.15% | −605−0.3% | Reduced |
| Man Group plc | – | $12.0M | 0.04% | – | – |
| Bridgewater Associates, LP | 199,051 | $12.0M | 0.07% | +167,622+533.3% | Added |
| Schroder Investment Management Group | 195,773 | $11.8M | 0.02% | −10,578−5.1% | Reduced |
| PGGM Investments | 195,352 | $11.8M | 0.20% | +893+0.5% | Added |
| Vestcor Inc | 191,448 | $11.5M | 0.42% | 00.0% | Unchanged |
| TD Asset Management Inc | 186,616 | $11.2M | 0.01% | +230.0% | Added |
| California Public Employees Retirement System | 179,768 | $10.8M | 0.01% | +773+0.4% | Added |
| Interval Partners, LP | 177,382 | $10.7M | 0.44% | +167,368+1,671.3% | Added |
| Macquarie Group Ltd | 176,505 | $10.6M | 0.01% | +138,743+367.4% | Added |
| Credit Suisse AG | 174,350 | $10.5M | 0.01% | +7,513+4.5% | Added |
| Teacher Retirement System of Texas | 173,895 | $10.5M | 0.07% | +4,880+2.9% | Added |
| Markel Group Inc.SuperinvestorMarkel Group | 173,200 | $10.4M | 0.13% | 00.0% | Unchanged |
| UBS Group AG | 171,354 | $10.3M | 0.00% | −82,298−32.4% | Reduced |
| Allspring Global Investments Holdings, LLC | 166,356 | $10.0M | 0.02% | −134,749−44.8% | Reduced |
| Phase 2 Partners, LLC | 163,528 | $9.85M | 4.35% | +163,528 | New |
| Deutsche Bank AG | 160,323 | $9.66M | 0.01% | −218,997−57.7% | Reduced |
| California State Teachers Retirement System | 160,272 | $9.65M | 0.01% | −11,807−6.9% | Reduced |
| Truist Financial Corp | 154,214 | $9.29M | 0.02% | −7,333−4.5% | Reduced |
| Jupiter Asset Management Ltd | 152,174 | $9.17M | 0.10% | −2,457−1.6% | Reduced |
| Pinebridge Investments, L.P. | 149,714 | $9.02M | 0.10% | +7,885+5.6% | Added |
| Arrowstreet Capital, Limited Partnership | 148,433 | $8.94M | 0.01% | +148,433 | New |
| Azora Capital LP | 147,932 | $8.91M | 0.98% | +147,932 | New |
| APG Asset Management N.V. | 147,216 | $8.87M | 0.02% | +125,400+574.8% | Added |
| Alliancebernstein L.P. | 146,113 | $8.80M | 0.00% | −5,824−3.8% | Reduced |
| First Trust Advisors LP | 145,623 | $8.77M | 0.01% | −63,936−30.5% | Reduced |
| State Board of Administration of Florida Retirement System | 141,745 | $8.54M | 0.02% | +160+0.1% | Added |
| American International Group, Inc. | 141,734 | $8.54M | 0.06% | −11,082−7.3% | Reduced |
| New York State Teachers Retirement System | 128,945 | $7.77M | 0.02% | −742−0.6% | Reduced |
| Victory Capital Management Inc | 124,509 | $7.50M | 0.01% | −75,229−37.7% | Reduced |
| American Century Companies Inc | 123,676 | $7.45M | 0.01% | +62,470+102.1% | Added |
| Abn Amro Investment Solutions | 119,090 | $7.17M | 0.14% | +13,605+12.9% | Added |
| State of Wisconsin Investment Board | 117,490 | $7.08M | 0.02% | −7,140−5.7% | Reduced |
| Hahn Capital Management LLC | 111,574 | $6.72M | 2.71% | −19,240−14.7% | Reduced |
| Allianz Asset Management GmbH | 106,421 | $6.41M | 0.01% | +47,584+80.9% | Added |
| Modera Wealth Management, LLC | 106,026 | $6.39M | 0.12% | −8,803−7.7% | Reduced |
| Voya Investment Management LLC | 105,507 | $6.35M | 0.01% | +31,011+41.6% | Added |
| Franklin Resources Inc | 103,955 | $6.26M | 0.00% | −13,389−11.4% | Reduced |
| Thrive Wealth Management, LLC | 103,925 | $6.26M | 1.67% | +5,204+5.3% | Added |
| Balyasny Asset Management LLC | 99,274 | $5.98M | 0.02% | +99,274 | New |
| Alps Advisors Inc | 98,710 | $5.95M | 0.05% | −4,352−4.2% | Reduced |
| Voloridge Investment Management, LLC | 95,768 | $5.77M | 0.03% | +59,088+161.1% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 92,200 | $5.55M | 0.01% | +14,225+18.2% | Added |
| Virginia Retirement Systems Et Al | 91,107 | $5.49M | 0.05% | +38,600+73.5% | Added |
| Manufacturers Life Insurance Company, The | 89,687 | $5.40M | 0.00% | +12,724+16.5% | Added |