Sellas Life Sciences Group ISLS
13F holders, Q2 2026 (June 30)193holders +33
59new positions
27sold out
3famous investors
$14.65avg. 13F price*
At the end of Q2 2026, 193 institutions reported holding Sellas Life Sciences Group I (SLS) in their 13F filings, up 33 from Q1 2026. 59 opened new positions and 27 sold out. The largest holders were BlackRock, Inc. ($222.4M), State Street Corp. ($191.8M) and Vanguard Capital Management LLC ($121.4M). 3 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Joel Greenblatt (0.0% of Gotham Asset Management's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Sellas Life Sciences Group I
- CUSIP
- 81642T209
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 59 | $121.1M |
| Exits | 27 | $14.3M |
All 13F filers, Q1 2026 → Q2 2026: 24,705,024 shares bought and 4,983,679 shares sold, net +19,721,345 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 193 holders
| BlackRock, Inc. | 0.00% | Add +23.5% | 15,070,302 | $222.4M |
| State Street Corp. | 0.01% | Add +54.8% | 12,996,558 | $191.8M |
| Vanguard Capital Management LLC | 0.00% | Add +9.3% | 8,226,105 | $121.4M |
| Geode Capital Management, LLC | 0.00% | Add +24.8% | 4,884,175 | $72.1M |
| Anson Funds Management LP | 6.26% | New | 4,500,000 | $66.4M |
| Vanguard Portfolio Management LLC | 0.00% | Add +47.7% | 2,161,099 | $31.9M |
| Susquehanna International Group, LLP | 0.03% | Add +416.4% | 2,050,597 | $30.3M |
| Jones Financial Companies LLLP | 0.01% | Add +37.6% | 2,304,561 | $28.6M |
| Northern Trust Corp. | 0.00% | Add +27.0% | 1,619,928 | $23.9M |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +11.0% | 1,335,166 | $19.7M |
| UBS Group AG | 0.00% | Add +68.1% | 1,252,757 | $18.5M |
| Morgan Stanley | 0.00% | Reduce -7.5% | 1,236,261 | $18.2M |
| Dagco, Inc. | 3.36% | Add +19.8% | 1,232,433 | $18.2M |
| BNP Paribas Financial Markets | 0.01% | Add +2180.1% | 1,072,022 | $15.8M |
| Bank of America Corp. | 0.00% | Add +22.8% | 787,949 | $11.6M |
| Wellington Management Group LLP | 0.00% | Add +73.2% | 597,309 | $8.8M |
| Goldman Sachs Group Inc. | 0.00% | Add +5.2% | 585,035 | $8.6M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +17.6% | 565,008 | $8.3M |
| Bank of New York Mellon Corp | 0.00% | Add +10.8% | 530,025 | $7.8M |
| Jane Street Group, LLC | 0.00% | New | 508,429 | $7.5M |
| Nuveen, LLC | 0.00% | Reduce -37.6% | 418,729 | $6.2M |
| Opus Capital Group, LLC | 0.55% | Add +11.3% | 385,604 | $5.7M |
| Invesco Ltd. | 0.00% | Reduce -46.2% | 375,342 | $5.5M |
| Swiss National Bank | 0.00% | New | 360,400 | $5.3M |
| XTX Topco Ltd | 0.07% | New | 359,090 | $5.3M |
| Wells Fargo & Company | 0.00% | Add +45.7% | 328,819 | $4.9M |
| Citigroup Inc. | 0.00% | Add +1173.5% | 326,591 | $4.8M |
| Renaissance Technologies | 0.01% | New | 310,364 | $4.6M |
| Everhart Financial Group, Inc. | 0.27% | Reduce -21.0% | 288,018 | $4.3M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | New | 273,403 | $4.0M |
| Rafferty Asset Management, LLC | 0.01% | Reduce -3.8% | 239,892 | $3.5M |
| Rhumbline Advisers | 0.00% | Add +18.6% | 230,402 | $3.4M |
| California State Teachers Retirement System | 0.00% | Add +2067.4% | 202,374 | $3.0M |
| Jefferies Financial Group Inc. | 0.03% | New | 200,459 | $3.0M |
| Mariner, LLC | 0.00% | Add +14.2% | 198,212 | $2.9M |
| Deutsche Bank AG | 0.00% | Add +38.1% | 190,128 | $2.8M |
| Alps Advisors Inc. | 0.01% | New | 188,107 | $2.8M |
| Legal & General Group Plc | 0.00% | Add +1008.2% | 167,800 | $2.5M |
| LPL Financial LLC | 0.00% | Add +13.4% | 155,663 | $2.3M |
| T. Rowe Price Associates Inc. | 0.00% | Add +27.0% | 155,066 | $2.3M |
| Simplex Trading, LLC | 0.06% | Reduce -47.8% | 154,099 | $2.3M |
| Vontobel Holding Ltd. | 0.01% | Reduce -15.7% | 146,762 | $2.2M |
| Vanguard Global Advisers, LLC | 0.00% | Add +1.5% | 130,005 | $1.9M |
| Tidal Investments LLC | 0.00% | Add +43.1% | 128,761 | $1.9M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | New | 125,989 | $1.9M |
| Profund Advisors LLC | 0.05% | Add +7.9% | 120,607 | $1.8M |
| Franklin Resources Inc. | 0.00% | New | 119,156 | $1.8M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +16.8% | 114,775 | $1.7M |
| MetLife Investment Management, LLC | 0.01% | Add +16.8% | 110,082 | $1.6M |
| JPMorgan Chase & Co. | 0.00% | Add +22.4% | 100,135 | $1.5M |
| Daiwa Securities Group Inc. | 0.00% | Add +4559.1% | 102,500 | $1.5M |
| Highbridge Capital Management LLC | 0.10% | New | 99,400 | $1.5M |
| Gsa Capital Partners LLP | 0.09% | Reduce -41.0% | 96,429 | $1.4M |
| State of Wisconsin Investment Board | 0.00% | New | 95,210 | $1.4M |
| Harvest Investment Services, LLC | 0.22% | New | 94,482 | $1.4M |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | New | 83,305 | $1.2M |
| Jupiter Topco LLC | 0.00% | — | 79,600 | $1.2M |
| Gotham Asset Management | 0.00% | New | 74,344 | $1.1M |
| Fulcrum Wealth Advisors, LLC | 0.83% | Reduce -33.0% | 73,253 | $1.1M |
| Russell Investments Group, Ltd. | 0.00% | Add +295.6% | 71,225 | $1.1M |
| Creative Planning | 0.00% | Add +74.1% | 70,643 | $1.0M |
| Alliancebernstein L.P. | 0.00% | Add +44.0% | 236,060 | $999K |
| New York State Common Retirement Fund | 0.00% | Add +70.0% | 66,300 | $979K |
| National Bank of Canada | 0.00% | Add +2432.2% | 60,443 | $892K |
| Osaic Holdings, Inc. | 0.00% | Add +27.5% | 60,284 | $890K |
| Fifth Third Bancorp | 0.00% | Add +0.6% | 60,190 | $888K |
| AQR Capital Management | 0.00% | Add +7.7% | 58,120 | $858K |
| State of New Jersey Common Pension Fund D | 0.00% | New | 58,067 | $857K |
| Police & Firemen's Retirement System of New Jersey | 0.01% | Add +18.2% | 55,666 | $822K |
| Arizona State Retirement System | 0.00% | New | 49,552 | $731K |
| Caption Management, LLC | 0.03% | New | 49,373 | $729K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +7.1% | 48,937 | $722K |
| Mercer Global Advisors Inc. | 0.00% | New | 48,383 | $714K |
| Vanguard Investments Australia, Ltd. | 0.00% | New | 46,385 | $685K |
| Commonwealth Equity Services, LLC | 0.00% | Add +17.2% | 45,087 | $665K |
| Instrumental Wealth, LLC | 0.34% | No change | 44,914 | $663K |
| Virtus Investment Advisers, LLC | 0.14% | New | 41,788 | $617K |
| Accurate Wealth Management, LLC | 0.06% | Add +45.5% | 47,462 | $615K |
| Axxcess Wealth Management, LLC | 0.01% | Add +17.0% | 41,373 | $611K |
| KLP Kapitalforvaltning As | 0.00% | New | 40,700 | $601K |
| SJS Investment Consulting Inc. | 0.06% | Add +60.0% | 40,000 | $590K |
| Wealthfront Advisers LLC | 0.00% | Add +248.2% | 39,822 | $588K |
| Voya Investment Management LLC | 0.00% | Add +27.5% | 37,298 | $551K |
| Quantinno Capital Management LP | 0.00% | Reduce -50.2% | 37,036 | $547K |
| Visionary Horizons, LLC | 0.22% | No change | 36,000 | $531K |
| Barclays PLC | 0.00% | Add +10.4% | 35,783 | $528K |
| Kestra Advisory Services, LLC | 0.00% | Add +20.0% | 34,980 | $516K |
| NORTHSTAR ASSET MANAGEMENT Co | 0.10% | Reduce -10.0% | 45,000 | $509K |
| Mangrove Partners Im, LLC | 0.03% | New | 34,140 | $504K |
| E Fund Management Co., Ltd. | 0.01% | Add +7.9% | 33,825 | $499K |
| Intech Investment Management LLC | 0.00% | Reduce -37.2% | 32,182 | $475K |
| Scissortail Wealth Management, LLC | 0.09% | Add +14.6% | 31,322 | $462K |
| Prudential Financial Inc. | 0.00% | Add +8.4% | 31,110 | $459K |
| Sculptor Capital LP | 0.01% | New | 30,300 | $447K |
| Walleye Capital LLC | 0.00% | New | 30,116 | $445K |
| Genesee Capital Advisors, LLC | 0.14% | No change | 30,000 | $443K |
| Walleye Trading LLC | 0.01% | New | 28,965 | $428K |
| Sei Investments Co. | 0.00% | No change | 26,581 | $392K |
| STRS Ohio | 0.00% | New | 26,100 | $385K |
| FMR LLC | 0.00% | Add +64.1% | 25,533 | $377K |
"% of holder's portfolio" is SLS's weight in each manager's 13F, not the share of Sellas Life Sciences Group I the manager owns.