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, Q4 2021
Institutional positions in SEI Investments Co as of Dec 31, 2021. 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
- 472
- +30 vs. Q3 2021
- Shares held
- 97.5M
- +862.3K (+0.9%) vs. Q3 2021
- Total value
- $5.94B
- +$212.5M (+3.7%) vs. Q3 2021
- New holders
- 68
- 142 more added
- Sold out
- 38
- 160 more reduced
4 institutions that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2021: 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, Q4 2021
Shares, value and share of portfolio for each institution holding SEI Investments Co; share changes are against Q3 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Loomis Sayles & Co L P | 13,171,337 | $802.7M | 0.97% | −711,101−5.1% | Reduced |
| Vanguard Group Inc | 12,065,855 | $735.3M | 0.02% | +107,711+0.9% | Added |
| BlackRock Inc. | 11,385,537 | $693.8M | 0.02% | +6,440+0.1% | Added |
| Atlanta Capital Management Co L L C | 6,319,042 | $385.1M | 1.30% | −74,728−1.2% | Reduced |
| State Street Corp | 5,690,615 | $349.0M | 0.02% | +35,910+0.6% | Added |
| Bank of America Corp | 3,694,917 | $225.2M | 0.02% | −149,327−3.9% | Reduced |
| Beutel, Goodman & Co Ltd. | 2,824,422 | $172.1M | 0.98% | +13,335+0.5% | Added |
| Great West Life Assurance Co | 1,979,764 | $120.3M | 0.25% | +408,329+26.0% | Added |
| Geode Capital Management, LLC | 1,943,809 | $118.4M | 0.01% | +141,772+7.9% | Added |
| Royce & Associates LP | 1,379,308 | $84.1M | 0.63% | −22,061−1.6% | Reduced |
| First Trust Advisors LP | 1,376,254 | $83.9M | 0.08% | +1,042,033+311.8% | Added |
| Bank of New York Mellon Corp | 1,197,543 | $73.0M | 0.01% | +2,255+0.2% | Added |
| Northern Trust Corp | 1,175,493 | $71.6M | 0.01% | −26,438−2.2% | Reduced |
| Schroder Investment Management Group | 1,094,715 | $66.7M | 0.09% | −55,696−4.8% | Reduced |
| Dimensional Fund Advisors LP | 1,083,692 | $66.0M | 0.02% | +4,928+0.5% | Added |
| Ameriprise Financial Inc | 1,063,234 | $64.8M | 0.02% | −30,847−2.8% | Reduced |
| Millennium Management LLC | 995,701 | $60.7M | 0.07% | +222,142+28.7% | Added |
| Boston Trust Walden Corp | 995,637 | $60.7M | 0.49% | +106,556+12.0% | Added |
| Norges Bank | 966,499 | $58.9M | 0.01% | −4,442−0.5% | Reduced |
| Legal & General Group Plc | 874,684 | $53.3M | 0.02% | −13,783−1.6% | Reduced |
| Natixis Advisors, L.P. | 851,054 | $51.9M | 0.20% | −370,061−30.3% | Reduced |
| American Capital Management Inc | 754,938 | $46.0M | 1.18% | −1,831−0.2% | Reduced |
| Goldman Sachs Group Inc | 754,533 | $46.0M | 0.01% | +126,519+20.1% | Added |
| AQR Capital Management LLC | 705,696 | $43.0M | 0.08% | +180,851+34.5% | Added |
| Brown Advisory Inc | 616,820 | $37.6M | 0.05% | +351,420+132.4% | Added |
| Charles Schwab Investment Management Inc | 584,977 | $35.6M | 0.01% | +8,799+1.5% | Added |
| Invesco Ltd. | 507,170 | $30.9M | 0.01% | −22,802−4.3% | Reduced |
| UBS Asset Management Americas Inc | 506,513 | $30.9M | 0.01% | −154,508−23.4% | Reduced |
| Markel Group Inc.SuperinvestorMarkel Group | 431,200 | $26.3M | 0.30% | 00.0% | Unchanged |
| Parametric Portfolio Associates LLC | 424,307 | $25.9M | 0.01% | +16,816+4.1% | Added |
| Arrowstreet Capital, Limited Partnership | 419,300 | $25.6M | 0.03% | −62,025−12.9% | Reduced |
| Principal Financial Group Inc | 376,745 | $23.0M | 0.01% | −11,379−2.9% | Reduced |
| Man Group plc | 363,509 | $22.2M | 0.07% | +82,721+29.5% | Added |
| PGGM Investments | 346,225 | $21.1M | 0.11% | 00.0% | Unchanged |
| ProShare Advisors LLC | 343,075 | $20.9M | 0.04% | +8,395+2.5% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 341,307 | $20.8M | 0.01% | −13,061−3.7% | Reduced |
| Goodnow Investment Group, LLC | 330,915 | $20.2M | 1.70% | −3,060−0.9% | Reduced |
| Raymond James & Associates | 313,928 | $19.1M | 0.02% | +18,034+6.1% | Added |
| Rhumbline Advisers | 312,412 | $19.0M | 0.02% | +1,079+0.3% | Added |
| Nuveen Asset Management, LLC | 305,651 | $18.6M | 0.01% | −29,936−8.9% | Reduced |
| UBS Group AG | 305,553 | $18.6M | 0.01% | +5,822+1.9% | Added |
| Retirement Systems of Alabama | 303,184 | $18.5M | 0.06% | −430.0% | Reduced |
| Eaton Vance Management | 290,791 | $17.7M | 0.02% | +182+0.1% | Added |
| JLB & Associates Inc | 290,218 | $17.7M | 2.51% | +3,498+1.2% | Added |
| Morgan Stanley | 284,407 | $17.3M | 0.00% | +22,243+8.5% | Added |
| Reinhart Partners, Inc. | 279,622 | $17.0M | 0.82% | −15,698−5.3% | Reduced |
| Los Angeles Capital Management LLC | 265,129 | $16.2M | 0.06% | −6,078−2.2% | Reduced |
| JPMorgan Chase & Co | 263,220 | $16.0M | 0.00% | +66,382+33.7% | Added |
| New York State Common Retirement Fund | 255,016 | $15.5M | 0.02% | −29,617−10.4% | Reduced |
| Hendershot Investments Inc. | 251,255 | $15.3M | 2.33% | +6,858+2.8% | Added |
| Thrivent Financial for Lutherans | 231,401 | $14.1M | 0.03% | −16,260−6.6% | Reduced |
| California Public Employees Retirement System | 227,939 | $13.9M | 0.01% | −14,092−5.8% | Reduced |
| Davis R M Inc | 227,296 | $13.9M | 0.31% | −7,929−3.4% | Reduced |
| Crestwood Advisors Group LLC | 223,353 | $13.6M | 0.35% | −27,641−11.0% | Reduced |
| Envestnet Asset Management Inc | 220,491 | $13.4M | 0.01% | +1,937+0.9% | Added |
| Caisse de Depot Et Placement du Quebec | 215,652 | $13.1M | 0.03% | +66,481+44.6% | Added |
| Wells Fargo & Company | 208,027 | $12.7M | 0.00% | −78,830−27.5% | Reduced |
| Truist Financial Corp | 204,323 | $12.5M | 0.02% | −9,526−4.5% | Reduced |
| Royal Bank of Canada | 202,698 | $12.4M | 0.00% | +42,929+26.9% | Added |
| FMR LLC | 202,266 | $12.3M | 0.00% | +17,870+9.7% | Added |
| HSBC Holdings PLC | 199,942 | $12.2M | 0.01% | +1,414+0.7% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 199,161 | $12.1M | 0.06% | −4,439−2.2% | Reduced |
| California State Teachers Retirement System | 198,334 | $12.1M | 0.01% | +5,191+2.7% | Added |
| Alliancebernstein L.P. | 196,622 | $12.0M | 0.00% | +21,499+12.3% | Added |
| Victory Capital Management Inc | 191,183 | $11.7M | 0.01% | −14,676−7.1% | Reduced |
| Credit Suisse AG | 186,994 | $11.4M | 0.01% | +24,188+14.9% | Added |
| Qube Research & Technologies Ltd | 186,601 | $11.4M | 0.09% | +186,601 | New |
| Hahn Capital Management LLC | 182,162 | $11.1M | 2.08% | −8,519−4.5% | Reduced |
| KBC Group NV | 179,542 | $10.9M | 0.04% | +115,405+179.9% | Added |
| American International Group, Inc. | 179,242 | $10.9M | 0.05% | −5,424−2.9% | Reduced |
| AustralianSuper Pty Ltd | 172,573 | $10.9M | 0.06% | −77,271−30.9% | Reduced |
| Citigroup Inc | 171,778 | $10.5M | 0.01% | +6,672+4.0% | Added |
| Worldquant Millennium Advisors LLC | 164,648 | $10.0M | 0.20% | +74,886+83.4% | Added |
| State Board of Administration of Florida Retirement System | 157,240 | $9.58M | 0.02% | −551−0.3% | Reduced |
| Barclays PLC | 146,144 | $8.91M | 0.01% | −59,635−29.0% | Reduced |
| New York State Teachers Retirement System | 142,907 | $8.71M | 0.02% | −776−0.5% | Reduced |
| Deutsche Bank AG | 141,044 | $8.60M | 0.00% | −9,783−6.5% | Reduced |
| Amundi | 130,426 | $8.23M | 0.01% | +13,246+11.3% | Added |
| TD Asset Management Inc | 132,717 | $8.09M | 0.01% | −2,887−2.1% | Reduced |
| Prudential Financial Inc | 126,713 | $8.03M | 0.01% | −53,387−29.6% | Reduced |
| Janney Montgomery Scott LLC | 131,450 | $8.01M | 0.03% | +7,936+6.4% | Added |
| Voloridge Investment Management, LLC | 127,552 | $7.77M | 0.04% | +67,664+113.0% | Added |
| Andra AP-fonden | 126,500 | $7.71M | 0.16% | −2,300−1.8% | Reduced |
| Russell Investments Group, Ltd. | 122,683 | $7.48M | 0.01% | +15,231+14.2% | Added |
| Manufacturers Life Insurance Company, The | 120,520 | $7.34M | 0.00% | −3,800−3.1% | Reduced |
| RSM US Wealth Management LLC | 115,753 | $7.05M | 0.34% | 00.0% | Unchanged |
| Robeco Institutional Asset Management B.V. | 113,206 | $6.90M | 0.01% | −42,386−27.2% | Reduced |
| State of Wisconsin Investment Board | 113,042 | $6.89M | 0.01% | +10,576+10.3% | Added |
| Teacher Retirement System of Texas | 112,997 | $6.89M | 0.03% | +1,126+1.0% | Added |
| Brandywine Global Investment Management, LLC | 112,262 | $6.84M | 0.05% | −2,199−1.9% | Reduced |
| Renaissance Technologies LLC | 110,226 | $6.72M | 0.01% | −66,300−37.6% | Reduced |
| Southernsun Asset Management, LLC | 109,018 | $6.64M | 0.66% | −13,834−11.3% | Reduced |
| Allspring Global Investments Holdings, LLC | 105,314 | $6.42M | 0.01% | +105,314 | New |
| BNP Paribas Arbitrage, SA | 102,648 | $6.26M | 0.01% | +41,791+68.7% | Added |
| Mirae Asset Global Investments Co., Ltd. | 102,322 | $6.24M | 0.01% | −5,321−4.9% | Reduced |
| Toronto Dominion Bank | 98,507 | $6.00M | 0.01% | +56,932+136.9% | Added |
| Mutual of America Capital Management LLC | 94,800 | $5.78M | 0.06% | +124+0.1% | Added |
| Thrive Wealth Management, LLC | 90,009 | $5.49M | 1.87% | +90,009 | New |
| Ensign Peak Advisors, Inc | 89,159 | $5.43M | 0.01% | −13,385−13.1% | Reduced |
| Court Place Advisors, LLC | 87,848 | $5.35M | 1.47% | −6,135−6.5% | Reduced |