Sellas Life Sciences Group ISLS
13F holders, Q4 2025 (December 31)112holders +18
27new positions
9sold out
1famous investor
$3.77avg. 13F price*
At the end of Q4 2025, 112 institutions reported holding Sellas Life Sciences Group I (SLS) in their 13F filings, up 18 from Q3 2025. 27 opened new positions and 9 sold out. The largest holders were Vanguard Group Inc. ($31.9M), BlackRock, Inc. ($28.4M) and Geode Capital Management, LLC ($11.6M). One famous investor held it Israel Englander (0.0% of Millennium 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 Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 27 | $6.2M |
| Exits | 9 | $10.6M |
All 13F filers, Q3 2025 → Q4 2025: 11,174,306 shares bought and 8,695,950 shares sold, net +2,478,356 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 112 holders
| Vanguard Group Inc. | 0.00% | Add +23.8% | 8,467,400 | $31.9M |
| BlackRock, Inc. | 0.00% | Add +32.6% | 7,541,054 | $28.4M |
| Geode Capital Management, LLC | 0.00% | Add +35.9% | 3,077,337 | $11.6M |
| State Street Corp. | 0.00% | Add +60.8% | 2,188,171 | $8.2M |
| Millennium Management | 0.00% | Add +341.0% | 1,387,849 | $5.2M |
| Marshall Wace, LLP | 0.00% | Reduce -43.1% | 1,340,668 | $5.1M |
| Two Sigma Investments, LP | 0.01% | Add +642.0% | 1,082,207 | $4.1M |
| Nuveen, LLC | 0.00% | Add +2.6% | 1,023,961 | $3.9M |
| Northern Trust Corp. | 0.00% | Add +27.3% | 930,750 | $3.5M |
| Morgan Stanley | 0.00% | Reduce -15.5% | 890,929 | $3.4M |
| Dagco, Inc. | 0.50% | New | 577,540 | $2.2M |
| Barclays PLC | 0.00% | Add +179.7% | 511,034 | $1.9M |
| Clear Street Group Inc. | 0.01% | New | 500,000 | $1.9M |
| Everhart Financial Group, Inc. | 0.16% | Add +40.8% | 466,216 | $1.8M |
| Jones Financial Companies LLLP | 0.00% | Add +114670.9% | 429,243 | $1.6M |
| Goldman Sachs Group Inc. | 0.00% | Add +2036.8% | 411,654 | $1.6M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +38.9% | 408,401 | $1.5M |
| Susquehanna International Group, LLP | 0.00% | Reduce -59.5% | 349,755 | $1.3M |
| Gsa Capital Partners LLP | 0.11% | Reduce -33.5% | 345,052 | $1.3M |
| Opus Capital Group, LLC | 0.13% | Add +26.8% | 317,100 | $1.2M |
| Wells Fargo & Company | 0.00% | Add +294.5% | 299,305 | $1.1M |
| Bank of New York Mellon Corp | 0.00% | Add +24.7% | 256,409 | $967K |
| Mariner, LLC | 0.00% | Add +46.3% | 159,150 | $600K |
| Rhumbline Advisers | 0.00% | Reduce -5.4% | 129,309 | $487K |
| XTX Topco Ltd | 0.01% | New | 118,440 | $447K |
| Bank of America Corp. | 0.00% | Add +139.5% | 100,935 | $381K |
| LPL Financial LLC | 0.00% | Add +35.6% | 96,305 | $363K |
| Deutsche Bank AG | 0.00% | Reduce -24.2% | 91,688 | $346K |
| Two Sigma Advisers, LP | 0.00% | New | 76,554 | $289K |
| T. Rowe Price Associates Inc. | 0.00% | Add +31.4% | 63,026 | $238K |
| Stoneridge Investment Partners LLC | 0.16% | Add +14.2% | 61,327 | $231K |
| Jane Street Group, LLC | 0.00% | Reduce -42.2% | 59,536 | $224K |
| Instrumental Wealth, LLC | 0.13% | No change | 44,914 | $221K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +28.9% | 57,547 | $217K |
| Two Sigma Securities, LLC | 0.03% | New | 57,105 | $215K |
| Citigroup Inc. | 0.00% | Add +1198.0% | 55,475 | $209K |
| Caitong International Asset Management Co., Ltd | 0.05% | Add +408.9% | 55,129 | $208K |
| Invesco Ltd. | 0.00% | Add +6.2% | 53,293 | $201K |
| NORTHSTAR ASSET MANAGEMENT Co | 0.04% | Add +24.0% | 50,000 | $189K |
| Alliancebernstein L.P. | 0.00% | No change | 49,960 | $188K |
| JPMorgan Chase & Co. | 0.00% | Add +21.5% | 49,479 | $187K |
| UBS Group AG | 0.00% | Reduce -42.7% | 48,727 | $184K |
| Fulcrum Wealth Advisors, LLC | 0.15% | — | 48,664 | $183K |
| World Investment Advisors | 0.00% | New | 44,123 | $166K |
| Intech Investment Management LLC | 0.00% | Reduce -13.1% | 40,272 | $152K |
| Scientech Research LLC | 0.09% | New | 38,743 | $146K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +13.6% | 38,018 | $143K |
| Tyche Wealth Partners LLC | 0.02% | No change | 37,500 | $141K |
| SG Americas Securities, LLC | 0.00% | Add +88.2% | 36,450 | $137K |
| Visionary Horizons, LLC | 0.07% | New | 36,000 | $136K |
| Regal Investment Advisors LLC | 0.01% | New | 35,900 | $135K |
| Axxcess Wealth Management, LLC | 0.00% | Add +121.1% | 35,370 | $133K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | Add +48.8% | 34,743 | $131K |
| Equitable Holdings, Inc. | 0.00% | Add +18.5% | 32,060 | $121K |
| Genesee Capital Advisors, LLC | 0.05% | No change | 30,000 | $113K |
| Commonwealth Equity Services, LLC | 0.00% | Add +84.5% | 29,244 | $110K |
| Kestra Advisory Services, LLC | 0.00% | Add +3.8% | 27,400 | $103K |
| Scissortail Wealth Management, LLC | 0.02% | No change | 27,322 | $103K |
| MetLife Investment Management, LLC | 0.00% | Reduce -32.0% | 27,181 | $102K |
| BNP Paribas Financial Markets | 0.00% | Add +36.1% | 26,838 | $101K |
| Sei Investments Co. | 0.00% | No change | 26,581 | $100K |
| Blair William & Co. | 0.00% | Add +62.5% | 26,002 | $98K |
| Millington Financial Advisors, LLC | 0.04% | New | 25,000 | $93K |
| Jaffetilchin Investment Partners, LLC | 0.01% | New | 24,338 | $92K |
| Trustmark Bank Trust Department | 0.01% | Reduce -34.3% | 24,000 | $90K |
| Osaic Holdings, Inc. | 0.00% | Add +209.3% | 23,689 | $89K |
| Independent Financial Group, LLC | 0.00% | No change | 23,250 | $88K |
| ProShare Advisors LLC | 0.00% | Add +31.5% | 22,638 | $85K |
| Voya Investment Management LLC | 0.00% | Add +20.6% | 21,034 | $79K |
| Simon Quick Advisors, LLC | 0.00% | No change | 20,000 | $75K |
| Private Advisor Group, LLC | 0.00% | New | 18,205 | $69K |
| Victory Capital Management Inc. | 0.00% | Add +37.8% | 16,351 | $62K |
| Grange Capital, LLC | 0.06% | Add +18.5% | 16,001 | $60K |
| ELCO Management Co., LLC | 0.03% | Add +4.3% | 14,609 | $55K |
| Boothbay Fund Management, LLC | 0.00% | New | 13,800 | $52K |
| Squarepoint Ops LLC | 0.00% | Reduce -71.2% | 13,285 | $50K |
| Stifel Financial Corp. | 0.00% | New | 13,036 | $49K |
| Legal & General Group Plc | 0.00% | Add +22.6% | 13,032 | $49K |
| Ewa, LLC | 0.01% | New | 12,796 | $48K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Reduce -37.8% | 12,435 | $47K |
| Cwm, LLC | 0.00% | Add +124.7% | 11,782 | $44K |
| Calton & Associates, Inc. | 0.01% | No change | 11,000 | $41K |
| Money Concepts Capital Corp. | 0.00% | New | 10,600 | $40K |
| Jefferies Financial Group Inc. | 0.00% | New | 10,100 | $38K |
| Concurrent Investment Advisors, LLC | 0.00% | New | 10,085 | $38K |
| Private Wealth Management Group, LLC | 0.01% | No change | 10,000 | $38K |
| Nemes Rush Group LLC | 0.00% | No change | 10,000 | $38K |
| Beacon Pointe Advisors, LLC | 0.00% | New | 10,000 | $38K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 9,744 | $37K |
| Russell Investments Group, Ltd. | 0.00% | Add +4.0% | 9,560 | $36K |
| Royal Bank of Canada | 0.00% | Reduce -19.0% | 7,651 | $29K |
| California State Teachers Retirement System | 0.00% | Add +28.0% | 7,628 | $29K |
| FMR LLC | 0.00% | Add +629.1% | 7,495 | $28K |
| Larson Financial Group LLC | 0.00% | New | 6,993 | $26K |
| New York State Common Retirement Fund | 0.00% | Reduce -86.0% | 6,900 | $26K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -49.4% | 6,474 | $24K |
| SageView Advisory Group, LLC | 0.00% | New | 5,000 | $19K |
| Global Retirement Partners, LLC | 0.00% | Add +400.0% | 5,000 | $19K |
| Rockefeller Capital Management L.P. | 0.00% | No change | 5,000 | $19K |
| Amalgamated Bank | 0.00% | Add +19.4% | 3,892 | $15K |
| SBI Securities Co., Ltd. | 0.00% | Reduce -37.3% | 3,591 | $14K |
| Sterling Capital Management LLC | 0.00% | Add +223.8% | 790 | $3K |
| Avion Wealth | 0.00% | No change | 573 | $2K |
| Strengthening Families & Communities, LLC | 0.00% | New | 500 | $2K |
| GAMMA Investing LLC | 0.00% | New | 372 | $1K |
| Farther Finance Advisors, LLC | 0.00% | New | 350 | $1K |
| PNC Financial Services Group, Inc. | 0.00% | Reduce -75.4% | 283 | $1K |
| Nvwm, LLC | 0.00% | New | 201 | $758 |
| Caldwell Sutter Capital, Inc. | 0.00% | No change | 100 | $377 |
| Rothschild Investment LLC | 0.00% | New | 21 | $79 |
| Parkside Financial Bank & Trust | 0.00% | No change | 2 | $8 |
| Motiv8 Investments LLC | 0.00% | New | 80 | $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.