Sellas Life Sciences Group ISLS
13F holders, Q3 2025 (September 30)94holders +15
20new positions
5sold out
3famous investors
$1.61avg. 13F price*
At the end of Q3 2025, 94 institutions reported holding Sellas Life Sciences Group I (SLS) in their 13F filings, up 15 from Q2 2025. 20 opened new positions and 5 sold out. The largest holders were Vanguard Group Inc. ($11.0M), Anson Funds Management LP ($9.7M) and BlackRock, Inc. ($9.2M). 3 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Sellas Life Sciences Group I
- CUSIP
- 81642T209
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 20 | $1.7M |
| Exits | 5 | $363K |
All 13F filers, Q2 2025 → Q3 2025: 8,986,292 shares bought and 2,838,971 shares sold, net +6,147,321 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 94 holders
| Vanguard Group Inc. | 0.00% | Add +2.8% | 6,839,905 | $11.0M |
| Anson Funds Management LP | 1.12% | Add +2093.8% | 6,032,938 | $9.7M |
| BlackRock, Inc. | 0.00% | Add +23.9% | 5,686,886 | $9.2M |
| Marshall Wace, LLP | 0.00% | Reduce -13.2% | 2,357,999 | $3.8M |
| Geode Capital Management, LLC | 0.00% | Add +2.9% | 2,264,384 | $3.6M |
| State Street Corp. | 0.00% | Add +22.3% | 1,360,914 | $2.2M |
| Morgan Stanley | 0.00% | Reduce -2.7% | 1,054,791 | $1.7M |
| Nuveen, LLC | 0.00% | Add +2.7% | 997,910 | $1.6M |
| Susquehanna International Group, LLP | 0.00% | Reduce -42.0% | 863,575 | $1.4M |
| Northern Trust Corp. | 0.00% | Add +4.7% | 731,175 | $1.2M |
| Gsa Capital Partners LLP | 0.07% | Add +21.7% | 518,995 | $836K |
| Everhart Financial Group, Inc. | 0.05% | New | 331,150 | $533K |
| Millennium Management | 0.00% | Reduce -72.1% | 314,702 | $507K |
| Charles Schwab Investment Management Inc. | 0.00% | No change | 294,106 | $474K |
| Renaissance Technologies | 0.00% | New | 291,822 | $470K |
| Opus Capital Group, LLC | 0.05% | Add +4.2% | 250,000 | $403K |
| Bank of New York Mellon Corp | 0.00% | Add +2.1% | 205,682 | $331K |
| Citadel Advisors | 0.00% | Add +128.7% | 194,357 | $313K |
| Barclays PLC | 0.00% | Add +5.7% | 182,680 | $294K |
| Two Sigma Investments, LP | 0.00% | Reduce -26.2% | 145,856 | $235K |
| Rhumbline Advisers | 0.00% | Add +0.6% | 136,639 | $220K |
| Deutsche Bank AG | 0.00% | Add +5083.1% | 121,025 | $195K |
| Mariner, LLC | 0.00% | Add +112.9% | 108,806 | $175K |
| Jane Street Group, LLC | 0.00% | Add +120.5% | 102,959 | $166K |
| UBS Group AG | 0.00% | Reduce -72.6% | 84,989 | $137K |
| Wells Fargo & Company | 0.00% | Add +41.0% | 75,867 | $122K |
| LPL Financial LLC | 0.00% | Add +5.2% | 71,039 | $114K |
| Stoneridge Investment Partners LLC | 0.06% | New | 53,709 | $86K |
| Instrumental Wealth, LLC | 0.06% | New | 44,914 | $86K |
| Invesco Ltd. | 0.00% | Add +0.0% | 50,179 | $81K |
| Alliancebernstein L.P. | 0.00% | No change | 49,960 | $80K |
| New York State Common Retirement Fund | 0.00% | No change | 49,300 | $79K |
| T. Rowe Price Associates Inc. | 0.00% | No change | 47,959 | $78K |
| Intech Investment Management LLC | 0.00% | Add +0.3% | 46,353 | $75K |
| Squarepoint Ops LLC | 0.00% | Add +186.4% | 46,180 | $74K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -14.5% | 44,647 | $72K |
| Bank of America Corp. | 0.00% | Add +21.9% | 42,150 | $68K |
| JPMorgan Chase & Co. | 0.00% | Reduce -34.2% | 40,722 | $66K |
| NORTHSTAR ASSET MANAGEMENT Co | 0.01% | New | 40,320 | $65K |
| MetLife Investment Management, LLC | 0.00% | Reduce -32.1% | 39,973 | $64K |
| Tyche Wealth Partners LLC | 0.01% | New | 37,500 | $60K |
| Trustmark Bank Trust Department | 0.00% | New | 36,511 | $59K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -3.2% | 33,454 | $54K |
| Genesee Capital Advisors, LLC | 0.02% | New | 30,000 | $48K |
| Scissortail Wealth Management, LLC | 0.01% | New | 27,322 | $44K |
| Equitable Holdings, Inc. | 0.00% | Add +58.6% | 27,060 | $44K |
| Sei Investments Co. | 0.00% | New | 26,581 | $43K |
| Kestra Advisory Services, LLC | 0.00% | New | 26,400 | $43K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 23,351 | $38K |
| Independent Financial Group, LLC | 0.00% | No change | 23,250 | $37K |
| Simon Quick Advisors, LLC | 0.00% | No change | 20,000 | $32K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | New | 20,000 | $32K |
| BNP Paribas Financial Markets | 0.00% | Add +89.2% | 19,724 | $32K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -95.9% | 19,265 | $31K |
| SG Americas Securities, LLC | 0.00% | Reduce -7.4% | 19,366 | $31K |
| Prosperity Financial Group, Inc. | 0.01% | Add +12.1% | 18,500 | $30K |
| Voya Investment Management LLC | 0.00% | Reduce -36.6% | 17,444 | $28K |
| ProShare Advisors LLC | 0.00% | Reduce -12.0% | 17,221 | $28K |
| Quadrature Capital Ltd | 0.00% | Reduce -31.7% | 16,579 | $27K |
| Commonwealth Equity Services, LLC | 0.00% | Reduce -17.6% | 15,854 | $26K |
| Blair William & Co. | 0.00% | No change | 16,002 | $26K |
| Axxcess Wealth Management, LLC | 0.00% | New | 16,000 | $26K |
| ELCO Management Co., LLC | 0.01% | New | 14,009 | $23K |
| Grange Capital, LLC | 0.02% | No change | 13,501 | $22K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -17.3% | 12,789 | $21K |
| Victory Capital Management Inc. | 0.00% | Add +1.9% | 11,870 | $19K |
| Calton & Associates, Inc. | 0.00% | No change | 11,000 | $18K |
| Caitong International Asset Management Co., Ltd | 0.01% | Add +111.4% | 10,833 | $17K |
| CIBC Bancorp USA Inc. | 0.00% | — | 10,736 | $17K |
| Legal & General Group Plc | 0.00% | No change | 10,626 | $17K |
| Marshall Financial Group, LLC | 0.00% | No change | 10,309 | $17K |
| Brooklyn FI, LLC | 0.00% | No change | 10,240 | $16K |
| Private Wealth Management Group, LLC | 0.00% | No change | 10,000 | $16K |
| Nemes Rush Group LLC | 0.00% | No change | 10,000 | $16K |
| Great Valley Advisor Group, Inc. | 0.00% | Reduce -50.0% | 10,000 | $16K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 9,744 | $16K |
| Russell Investments Group, Ltd. | 0.00% | New | 9,189 | $15K |
| Osaic Holdings, Inc. | 0.00% | No change | 7,660 | $15K |
| Royal Bank of Canada | 0.00% | Add +266.9% | 9,445 | $14K |
| California State Teachers Retirement System | 0.00% | Add +0.1% | 5,959 | $10K |
| SBI Securities Co., Ltd. | 0.00% | No change | 5,726 | $9K |
| Rockefeller Capital Management L.P. | 0.00% | New | 5,000 | $8K |
| Cwm, LLC | 0.00% | New | 5,244 | $8K |
| Citigroup Inc. | 0.00% | Reduce -89.9% | 4,274 | $7K |
| Amalgamated Bank | 0.00% | No change | 3,259 | $5K |
| PNC Financial Services Group, Inc. | 0.00% | New | 1,152 | $2K |
| FMR LLC | 0.00% | New | 1,028 | $2K |
| Global Retirement Partners, LLC | 0.00% | No change | 1,000 | $2K |
| Arax Advisory Partners | 0.00% | New | 540 | $869 |
| Jones Financial Companies LLLP | 0.00% | No change | 374 | $610 |
| Sterling Capital Management LLC | 0.00% | Add +5.6% | 244 | $393 |
| Caldwell Sutter Capital, Inc. | 0.00% | No change | 100 | $161 |
| Parkside Financial Bank & Trust | 0.00% | No change | 2 | $4 |
| Avion Wealth | 0.00% | No change | 573 | $0 |
"% 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.