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 2021
Institutional positions in SEI Investments Co as of Sep 30, 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
- 446
- +12 vs. Q2 2021
- Shares held
- 96.7M
- −835.6K (−0.9%) vs. Q2 2021
- Total value
- $5.73B
- −$308.3M (−5.1%) vs. Q2 2021
- New holders
- 42
- 138 more added
- Sold out
- 30
- 160 more reduced
6 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2021
Shares, value and share of portfolio for each institution holding SEI Investments Co; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| LPL Financial LLC | 50,372 | $2.99M | 0.00% | +6,000+13.5% | Added |
| O'Shares Investment Advisers, LLC | 51,109 | $3.03M | 0.22% | +51,109 | New |
| CIBC Private Wealth Group, LLC | 51,370 | $3.05M | 0.01% | −1,958−3.7% | Reduced |
| MetLife Investment Management | 51,508 | $3.05M | 0.03% | −7,719−13.0% | Reduced |
| Pictet Asset Management SA | 51,552 | $3.06M | 0.00% | +51,552 | New |
| ExodusPoint Capital Management, LP | 51,775 | $3.07M | 0.05% | +34,072+192.5% | Added |
| Rafferty Asset Management, LLC | 51,959 | $3.08M | 0.02% | −10,069−16.2% | Reduced |
| Janus Henderson Group PLC | 52,187 | $3.10M | 0.00% | −2,375−4.4% | Reduced |
| Price T Rowe Associates Inc | 52,907 | $3.14M | 0.00% | −4,667−8.1% | Reduced |
| BBVA USA | 53,373 | $3.17M | 0.19% | −394−0.7% | Reduced |
| Assenagon Asset Management S.A. | 53,566 | $3.18M | 0.01% | +49,275+1,148.3% | Added |
| Comerica Bank | 49,708 | $3.19M | 0.02% | −16,309−24.7% | Reduced |
| Glenmede Trust Co NA | 54,860 | $3.25M | 0.02% | −1,860−3.3% | Reduced |
| Mandatum Life Insurance Co Ltd | 54,859 | $3.25M | 0.60% | 00.0% | Unchanged |
| APG Asset Management N.V. | 63,953 | $3.27M | 0.01% | +4,400+7.4% | Added |
| Oregon Public Employees Retirement Fund | 56,571 | $3.35M | 0.04% | −1,507−2.6% | Reduced |
| Parsec Financial Management, Inc. | 52,203 | $3.36M | 0.14% | −609−1.2% | Reduced |
| Bridgewater Associates, LP | 58,382 | $3.46M | 0.02% | −1,382−2.3% | Reduced |
| Asset Management One Co.,Ltd. | 58,404 | $3.46M | 0.01% | +2,114+3.8% | Added |
| Voloridge Investment Management, LLC | 59,888 | $3.55M | 0.02% | +2,266+3.9% | Added |
| Putnam Investments LLC | 60,395 | $3.58M | 0.01% | −3,496−5.5% | Reduced |
| Ingalls & Snyder LLC | 60,420 | $3.58M | 0.17% | 00.0% | Unchanged |
| State of New Jersey Common Pension Fund D | 60,506 | $3.59M | 0.01% | −4,583−7.0% | Reduced |
| BNP Paribas Arbitrage, SA | 60,857 | $3.61M | 0.01% | −20,549−25.2% | Reduced |
| Jupiter Asset Management Ltd | 61,135 | $3.63M | 0.04% | +61,135 | New |
| Union Heritage Capital, LLC | 61,550 | $3.65M | 1.71% | 00.0% | Unchanged |
| Public Employees Retirement System of Ohio | 61,686 | $3.66M | 0.01% | −836−1.3% | Reduced |
| Aviva PLC | 62,109 | $3.68M | 0.02% | +25,749+70.8% | Added |
| Citadel Advisors LLC | 62,401 | $3.70M | 0.00% | −804−1.3% | Reduced |
| KBC Group NV | 64,137 | $3.80M | 0.01% | +1,992+3.2% | Added |
| Tudor Investment Corp Et Al | 65,221 | $3.87M | 0.08% | +65,221 | New |
| RK Asset Management, LLC | 66,025 | $3.92M | 3.47% | 00.0% | Unchanged |
| Redwood Investment Management, LLC | 67,571 | $4.01M | 0.57% | +12,095+21.8% | Added |
| Voya Investment Management LLC | 67,797 | $4.02M | 0.01% | −1,857−2.7% | Reduced |
| Sepio Capital, LP | 75,900 | $4.50M | 0.38% | +408+0.5% | Added |
| Holocene Advisors, LP | 75,966 | $4.50M | 0.03% | −14,897−16.4% | Reduced |
| Amalgamated Bank | 76,746 | $4.55M | 0.04% | −14,821−16.2% | Reduced |
| Banco Santander, S.A. | 77,090 | $4.57M | 0.02% | 00.0% | Unchanged |
| State of Tennessee, Treasury Department | 78,820 | $4.67M | 0.02% | −28,998−26.9% | Reduced |
| Texas Permanent School Fund | 79,313 | $4.70M | 0.06% | −9,020−10.2% | Reduced |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 81,036 | $4.80M | 0.04% | +5,153+6.8% | Added |
| South Dakota Investment Council | 81,981 | $4.86M | 0.09% | 00.0% | Unchanged |
| Mitsubishi UFJ Trust & Banking Corp | 84,967 | $5.04M | 0.01% | −6,224−6.8% | Reduced |
| Ergoteles LLC | 88,500 | $5.25M | 0.19% | +78,520+786.8% | Added |
| Worldquant Millennium Advisors LLC | 89,762 | $5.32M | 0.12% | +15,272+20.5% | Added |
| Cubist Systematic Strategies, LLC | 91,740 | $5.44M | 0.07% | +31,595+52.5% | Added |
| Court Place Advisors, LLC | 93,983 | $5.57M | 1.65% | −1,240−1.3% | Reduced |
| Mutual of America Capital Management LLC | 94,676 | $5.61M | 0.06% | −10,250−9.8% | Reduced |
| Bank of Montreal | 93,289 | $5.63M | 0.00% | +9,539+11.4% | Added |
| State of Wisconsin Investment Board | 102,466 | $6.08M | 0.01% | −9,464−8.5% | Reduced |
| Ensign Peak Advisors, Inc | 102,544 | $6.08M | 0.01% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 107,452 | $6.38M | 0.01% | +28,404+35.9% | Added |
| Mirae Asset Global Investments Co., Ltd. | 107,643 | $6.38M | 0.02% | +300+0.3% | Added |
| Teacher Retirement System of Texas | 111,871 | $6.63M | 0.04% | −1,051−0.9% | Reduced |
| Brandywine Global Investment Management, LLC | 114,461 | $6.79M | 0.05% | −7,540−6.2% | Reduced |
| RSM US Wealth Management LLC | 115,753 | $6.86M | 0.37% | 00.0% | Unchanged |
| AMP Capital Investors Ltd | 115,651 | $6.87M | 0.04% | +27,183+30.7% | Added |
| Amundi | 117,180 | $6.95M | 0.00% | −18,804−13.8% | Reduced |
| D. E. Shaw & Co., Inc. | 117,436 | $6.96M | 0.01% | +102,845+704.9% | Added |
| Southernsun Asset Management, LLC | 122,852 | $7.29M | 0.77% | +530.0% | Added |
| Janney Montgomery Scott LLC | 123,514 | $7.33M | 0.03% | +6,529+5.6% | Added |
| Manufacturers Life Insurance Company, The | 124,320 | $7.37M | 0.01% | −6,086−4.7% | Reduced |
| Andra AP-fonden | 128,800 | $7.64M | 0.16% | 00.0% | Unchanged |
| TD Asset Management Inc | 135,604 | $8.04M | 0.01% | −764−0.6% | Reduced |
| New York State Teachers Retirement System | 143,683 | $8.52M | 0.02% | −2,906−2.0% | Reduced |
| Caisse de Depot Et Placement du Quebec | 149,171 | $8.85M | 0.02% | +57,512+62.7% | Added |
| Deutsche Bank AG | 150,827 | $8.94M | 0.00% | +2,883+1.9% | Added |
| HRT Financial LP | 154,537 | $9.16M | 0.06% | +112,153+264.6% | Added |
| Robeco Institutional Asset Management B.V. | 155,592 | $9.23M | 0.02% | +9,374+6.4% | Added |
| Prana Capital Management, LP | 157,717 | $9.35M | 0.82% | −176,301−52.8% | Reduced |
| State Board of Administration of Florida Retirement System | 157,791 | $9.36M | 0.02% | −2,466−1.5% | Reduced |
| Royal Bank of Canada | 159,769 | $9.47M | 0.00% | −18,393−10.3% | Reduced |
| Credit Suisse AG | 162,806 | $9.66M | 0.01% | −1,595−1.0% | Reduced |
| Citigroup Inc | 165,106 | $9.79M | 0.01% | −21,216−11.4% | Reduced |
| Schonfeld Strategic Advisors LLC | 175,000 | $10.4M | 0.12% | −93,610−34.8% | Reduced |
| Alliancebernstein L.P. | 175,123 | $10.4M | 0.00% | −11,563−6.2% | Reduced |
| Renaissance Technologies LLC | 176,526 | $10.5M | 0.01% | +129,500+275.4% | Added |
| Prudential Financial Inc | 180,100 | $10.7M | 0.01% | −37,287−17.2% | Reduced |
| FMR LLC | 184,396 | $10.9M | 0.00% | −60,878−24.8% | Reduced |
| American International Group, Inc. | 184,666 | $11.0M | 0.06% | −25,789−12.3% | Reduced |
| Hahn Capital Management LLC | 190,681 | $11.3M | 2.21% | −5,317−2.7% | Reduced |
| California State Teachers Retirement System | 193,143 | $11.5M | 0.01% | +6,180+3.3% | Added |
| JPMorgan Chase & Co | 196,838 | $11.7M | 0.00% | −126,384−39.1% | Reduced |
| HSBC Holdings PLC | 198,528 | $11.8M | 0.01% | +117,969+146.4% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 203,600 | $12.1M | 0.06% | +28,371+16.2% | Added |
| Barclays PLC | 205,779 | $12.2M | 0.01% | −22,259−9.8% | Reduced |
| Victory Capital Management Inc | 205,859 | $12.2M | 0.01% | −34,805−14.5% | Reduced |
| Truist Financial Corp | 213,849 | $12.7M | 0.02% | −1,705−0.8% | Reduced |
| Envestnet Asset Management Inc | 218,554 | $13.0M | 0.01% | +7,164+3.4% | Added |
| Davis R M Inc | 235,225 | $13.9M | 0.35% | +13,463+6.1% | Added |
| California Public Employees Retirement System | 242,031 | $14.4M | 0.01% | −6,436−2.6% | Reduced |
| Hendershot Investments Inc. | 244,397 | $14.5M | 2.74% | +6,862+2.9% | Added |
| Thrivent Financial for Lutherans | 247,661 | $14.7M | 0.03% | +15,090+6.5% | Added |
| AustralianSuper Pty Ltd | 249,844 | $14.8M | 0.10% | −44,516−15.1% | Reduced |
| Crestwood Advisors Group LLC | 250,994 | $14.9M | 0.42% | −48,500−16.2% | Reduced |
| Morgan Stanley | 262,164 | $15.5M | 0.00% | −17,168−6.1% | Reduced |
| Sunriver Management LLC | 265,162 | $15.7M | 2.50% | −195,380−42.4% | Reduced |
| Brown Advisory Inc | 265,400 | $15.7M | 0.02% | +107,170+67.7% | Added |
| Los Angeles Capital Management LLC | 271,207 | $16.1M | 0.07% | −64,145−19.1% | Reduced |
| Man Group plc | 280,788 | $16.6M | 0.06% | +58,269+26.2% | Added |