DaveManuel.com · Institutional Ownership · Who Owns It
SELLAS LIFE SCIENCES GROUP I (SLS)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
213
Reporting holders
$1.7B
Reported value
36.7%
Of shares outstanding
19.5%
Calls
16.3%
Puts
+46
Holder change
Institutions report 74,125,455 shares against 201,945,709 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $222.4M | 15,070,302 | 0.00% | 8q | +23.5%+$42.4M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $197.7M incl. $167.5M options CALL+PUT | 2,050,597 | 0.02% | 23q | +416.5%+$159.5M |
| STATE STREET CORP | $191.8M | 12,996,558 | 0.01% | 21q | +54.8%+$67.9M |
| VANGUARD CAPITAL MANAGEMENT LLC | $121.4M | 8,226,105 | 0.00% | 2q | +9.3%+$10.3M |
| GROUP ONE TRADING LLC | $117.0M CALL+PUT | options only | 0.16% | 23q | OPTIONS |
| Anson Funds Management LP | $105.5M incl. $39.1M options CALL+PUT | 4,500,000 | 6.26% | new | NEW |
| CITADEL ADVISORS LLC | $97.5M CALL+PUT | options only | 0.01% | 23q | OPTIONS |
| GEODE CAPITAL MANAGEMENT, LLC | $72.1M | 4,884,175 | 0.00% | 27q | +24.8%+$14.3M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $31.9M | 2,161,099 | 0.00% | 2q | +47.7%+$10.3M |
| BNP PARIBAS FINANCIAL MARKETS | $31.2M incl. $15.4M options PUT | 1,072,022 | 0.01% | 5q | +2180.1%+$29.9M |
| JONES FINANCIAL COMPANIES LLLP | $28.6M | 2,304,561 | 0.01% | 9q | +37.6%+$7.8M |
| SIMPLEX TRADING, LLC | $26.6M incl. $24.4M options CALL+PUT | 154,099 | 0.02% | 2q | -47.8%-$24.4M |
| NORTHERN TRUST CORP | $23.9M | 1,619,928 | 0.00% | 23q | +27.0%+$5.1M |
| PERCEPTIVE ADVISORS LLC | $22.1M PUT | options only | 0.33% | new | OPTIONS |
| JANE STREET GROUP, LLC | $21.0M incl. $13.5M options CALL+PUT | 508,429 | 0.00% | 9q | HELD |
| VANGUARD FIDUCIARY TRUST CO | $19.7M | 1,335,166 | 0.00% | 2q | +11.0%+$2.0M |
| UBS Group AG | $18.5M | 1,252,757 | 0.00% | 7q | +68.1%+$7.5M |
| MORGAN STANLEY | $18.2M | 1,236,261 | 0.00% | 27q | -7.5%-$1.5M |
| DAGCO, INC. | $18.2M | 1,232,433 | 3.36% | 3q | +19.8%+$3.0M |
| Sio Capital Management, LLC | $18.2M PUT | options only | 3.01% | new | OPTIONS |
| MILLENNIUM MANAGEMENT LLC | $16.3M CALL+PUT | options only | 0.01% | 5q | OPTIONS |
| BARCLAYS PLC | $12.4M incl. $11.8M options PUT | 35,783 | 0.00% | 5q | +10.4%+$1.2M |
| BANK OF AMERICA CORP /DE/ | $11.6M | 787,949 | 0.00% | 9q | +22.8%+$2.2M |
| WELLINGTON MANAGEMENT GROUP LLP | $8.8M | 597,309 | 0.00% | 2q | +73.2%+$3.7M |
| GOLDMAN SACHS GROUP INC | $8.6M | 585,035 | 0.00% | 5q | +5.2%+$429.8K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $8.3M | 565,008 | 0.00% | 16q | +17.6%+$1.2M |
| Bank of New York Mellon Corp | $7.8M | 530,025 | 0.00% | 5q | +10.8%+$762.5K |
| Balyasny Asset Management L.P. | $7.4M PUT | options only | 0.01% | 2q | OPTIONS |
| DIADEMA PARTNERS LP | $7.4M CALL+PUT | options only | 0.93% | 5q | OPTIONS |
| NOMURA HOLDINGS INC | $6.6M CALL+PUT | options only | 0.01% | 3q | OPTIONS |
| LMR Partners LLP | $6.6M PUT | options only | 0.02% | new | OPTIONS |
| Nuveen, LLC | $6.2M | 418,729 | 0.00% | 5q | -37.6%-$3.7M |
| Jefferies Financial Group Inc. | $5.9M incl. $3.0M options PUT | 200,459 | 0.04% | new | NEW |
| Opus Capital Group, LLC | $5.7M | 385,604 | 0.55% | 15q | +11.3%+$577.9K |
| Invesco Ltd. | $5.5M | 375,342 | 0.00% | 5q | -46.2%-$4.8M |
| Swiss National Bank | $5.3M | 360,400 | 0.00% | new | NEW |
| XTX Topco Ltd | $5.3M | 359,090 | 0.07% | new | NEW |
| HRT FINANCIAL LP | $5.3M incl. $5.3M options OPT | 357,600 | 0.01% | 2q | -46.1%-$4.5M |
| Ikarian Capital, LLC | $5.2M PUT | options only | 0.56% | new | OPTIONS |
| TUDOR INVESTMENT CORP ET AL | $5.2M CALL+PUT | options only | 0.01% | 3q | OPTIONS |
| WELLS FARGO & COMPANY/MN | $4.9M | 328,819 | 0.00% | 6q | +45.7%+$1.5M |
| CITIGROUP INC | $4.8M | 326,591 | 0.00% | 5q | +1173.5%+$4.4M |
| RENAISSANCE TECHNOLOGIES LLC | $4.6M | 310,364 | 0.01% | new | NEW |
| Everhart Financial Group, Inc. | $4.3M | 288,018 | 0.27% | 4q | -21.0%-$1.1M |
| Walleye Capital LLC | $4.1M incl. $3.6M options CALL+PUT | 30,116 | 0.01% | new | NEW |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $4.0M | 273,403 | 0.00% | new | NEW |
| Rafferty Asset Management, LLC | $3.5M | 239,892 | 0.01% | 2q | -3.8%-$140.8K |
| RHUMBLINE ADVISERS | $3.4M | 230,402 | 0.00% | 5q | +18.6%+$534.4K |
| Daiwa Securities Group Inc. | $3.2M incl. $1.7M options CALL+PUT | 102,500 | 0.01% | 2q | +4559.1%+$3.1M |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $3.0M | 202,374 | 0.00% | 5q | +2067.4%+$2.8M |
| BOOTHBAY FUND MANAGEMENT, LLC | $3.0M PUT | options only | 0.04% | new | OPTIONS |
| Mariner, LLC | $2.9M | 198,212 | 0.00% | 10q | +14.2%+$363.7K |
| Caption Management, LLC | $2.8M incl. $2.1M options CALL+PUT | 49,373 | 0.01% | new | NEW |
| DEUTSCHE BANK AG\ | $2.8M | 190,128 | 0.00% | 5q | +38.1%+$774.6K |
| ALPS ADVISORS INC | $2.8M | 188,107 | 0.01% | new | NEW |
| Legal & General Group Plc | $2.5M | 167,800 | 0.00% | 5q | +1008.2%+$2.3M |
| Rosalind Advisors, Inc. | $2.3M PUT | options only | 0.86% | new | OPTIONS |
| LPL Financial LLC | $2.3M | 155,663 | 0.00% | 9q | +13.5%+$272.4K |
| PRICE T ROWE ASSOCIATES INC /MD/ | $2.3M | 155,066 | 0.00% | 5q | +27.0%+$486.3K |
| Vontobel Holding Ltd. | $2.2M | 146,762 | 0.01% | 2q | -15.7%-$404.3K |
| Vanguard Global Advisers, LLC | $1.9M | 130,005 | 0.00% | 2q | +1.5%+$28.0K |
| Tidal Investments LLC | $1.9M | 128,761 | 0.00% | 2q | +43.1%+$572.0K |
| VANGUARD ASSET MANAGEMENT, Ltd | $1.9M | 125,989 | 0.00% | new | NEW |
| PROFUND ADVISORS LLC | $1.8M | 120,607 | 0.05% | 2q | +7.9%+$130.1K |
| FRANKLIN RESOURCES INC | $1.8M | 119,156 | 0.00% | new | NEW |
| Verition Fund Management LLC | $1.7M CALL+PUT | options only | 0.01% | 3q | OPTIONS |
| NATIONAL BANK OF CANADA /FI/ | $1.7M incl. $839.8K options PUT | 60,443 | 0.00% | 2q | +2432.2%+$1.7M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $1.7M | 114,775 | 0.00% | 5q | +16.8%+$246.1K |
| MetLife Investment Management, LLC | $1.6M | 110,082 | 0.01% | 5q | +16.8%+$233.6K |
| Marathon Trading Investment Management LLC | $1.5M CALL+PUT | options only | 0.05% | 3q | OPTIONS |
| JPMORGAN CHASE & CO | $1.5M | 100,135 | 0.00% | 5q | +22.4%+$282.9K |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | $1.5M | 99,400 | 0.04% | new | NEW |
| GSA CAPITAL PARTNERS LLP | $1.4M | 96,429 | 0.09% | 6q | -40.9%-$986.7K |
| STATE OF WISCONSIN INVESTMENT BOARD | $1.4M | 95,210 | 0.00% | new | NEW |
| Harvest Investment Services, LLC | $1.4M | 94,482 | 0.22% | new | NEW |
| ORBIMED ADVISORS LLC | $1.4M PUT | options only | 0.03% | new | OPTIONS |
| Zurcher Kantonalbank (Zurich Cantonalbank) | $1.2M | 83,305 | 0.00% | new | NEW |
| Jupiter Topco LLC | $1.2M | 79,600 | 0.00% | new | FIRST |
| Gotham Asset Management, LLC | $1.1M | 74,344 | 0.00% | new | NEW |
| FULCRUM WEALTH ADVISORS, LLC | $1.1M | 73,253 | 0.83% | 3q | -32.9%-$531.3K |
| Russell Investments Group, Ltd. | $1.1M | 71,225 | 0.00% | 4q | +295.6%+$785.5K |
| Creative Planning | $1.0M | 70,643 | 0.00% | 2q | +74.1%+$443.9K |
| ALLIANCEBERNSTEIN L.P. | $998.5K | 236,060 | 0.00% | 5q | +44.0%+$305.1K |
| NEW YORK STATE COMMON RETIREMENT FUND | $978.6K | 66,300 | 0.00% | 5q | +70.0%+$402.9K |
| Sculptor Capital LP | $894.5K incl. $447.2K options PUT | 30,300 | 0.01% | new | NEW |
| OSAIC HOLDINGS, INC. | $889.8K | 60,284 | 0.00% | 23q | +27.5%+$192.1K |
| FIFTH THIRD BANCORP | $888.4K | 60,190 | 0.00% | 2q | +0.6%+$5.7K |
| Persistent Asset Partners Ltd | $883.0K CALL+PUT | options only | 0.26% | 2q | OPTIONS |
| AQR CAPITAL MANAGEMENT LLC | $857.9K | 58,120 | 0.00% | 2q | +7.6%+$61.0K |
| State of New Jersey Common Pension Fund D | $857.1K | 58,067 | 0.00% | new | NEW |
| Police & Firemen's Retirement System of New Jersey | $821.6K | 55,666 | 0.01% | 5q | +18.2%+$126.6K |
| ARIZONA STATE RETIREMENT SYSTEM | $731.4K | 49,552 | 0.00% | new | NEW |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $722.3K | 48,937 | 0.00% | 5q | +7.1%+$47.9K |
| MERCER GLOBAL ADVISORS INC /ADV | $714.1K | 48,383 | 0.00% | new | NEW |
| SIG BROKERAGE, LP | $689.3K CALL | options only | 0.01% | 3q | OPTIONS |
| Vanguard Investments Australia, Ltd. | $684.6K | 46,385 | 0.00% | new | NEW |
| COMMONWEALTH EQUITY SERVICES, LLC | $665.5K | 45,087 | 0.00% | 13q | +17.2%+$97.7K |
| INSTRUMENTAL WEALTH, LLC | $662.9K | 44,914 | 0.34% | 4q | HELD |
| Virtus Investment Advisers, LLC | $616.8K | 41,788 | 0.14% | new | NEW |
| Accurate Wealth Management, LLC | $614.7K | 47,462 | 0.06% | 2q | +45.5%+$192.3K |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-10-27 | 13G/A | BlackRock, Inc. | 7.9% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 44 | $30.7M | 2,495,218 | 6 | 17 | 7 | 0.0% |
| Q2 2026 | 213 | $1.7B | 74,125,455 | 67 | 77 | 32 | 36.1% |
| Q1 2026 | 167 | $341.6M | 54,624,928 | 64 | 52 | 19 | 33.1% |
| Q4 2025 | 121 | $224.3M | 35,457,531 | 33 | 49 | 20 | 40.4% |
| Q3 2025 | 98 | $81.3M | 32,981,273 | 20 | 28 | 18 | 34.7% |
| Q2 2025 | 84 | $77.5M | 26,797,203 | 44 | 21 | 6 | 24.3% |
| Q1 2025 | 47 | $18.8M | 14,311,093 | 18 | 16 | 3 | 17.9% |
| Q4 2024 | 33 | $11.4M | 6,218,491 | 4 | 10 | 5 | 43.4% |
| Q3 2024 | 36 | $12.1M | 5,414,609 | 8 | 10 | 5 | 44.2% |
| Q2 2024 | 37 | $12.4M | 4,080,096 | 12 | 11 | 3 | 60.7% |
| Q1 2024 | 34 | $11.6M | 7,746,289 | 8 | 8 | 5 | 32.4% |
| Q4 2023 | 34 | $6.4M | 3,524,507 | 8 | 11 | 4 | 41.8% |
| Q3 2023 | 30 | $7.6M | 2,767,328 | 5 | 8 | 6 | 39.9% |
| Q2 2023 | 26 | $8.1M | 3,126,789 | 4 | 7 | 1 | 39.7% |
| Q1 2023 | 25 | $7.1M | 2,996,128 | 3 | 6 | 4 | 40.0% |
| Q4 2022 | 30 | $6.5M | 1,889,269 | 11 | 9 | 2 | 31.8% |
| Q3 2022 | 28 | $5.9M | 2,186,943 | 5 | 4 | 5 | 25.5% |
| Q2 2022 | 27 | $8.4M | 2,979,307 | 7 | 9 | 3 | 20.8% |
| Q1 2022 | 28 | $14.3M | 1,690,142 | 5 | 6 | 9 | 21.2% |
| Q4 2021 | 27 | $14.0M | 1,827,642 | 5 | 6 | 8 | 27.9% |
| Q3 2021 | 31 | $21.6M | 1,859,470 | 6 | 10 | 6 | 20.8% |
| Q2 2021 | 32 | $27.3M | 1,897,926 | 7 | 11 | 5 | 22.0% |
| Q1 2021 | 30 | $17.7M | 1,553,238 | 14 | 7 | 3 | 25.3% |
| Q4 2020 | 21 | $5.9M | 925,075 | 13 | 3 | 2 | 9.1% |
| Q3 2020 | 10 | $1.6M | 616,674 | 3 | 1 | 3 | 0.0% |
| Q2 2020 | 12 | $1.3M | 455,904 | 5 | 1 | 2 | 0.0% |
| Q1 2020 | 10 | $722.0K | 416,786 | 4 | 2 | 1 | 0.0% |
| Q4 2019 | 10 | $2.2M | 440,853 | 10 | 0 | 0 | 12.4% |
| Q3 2019 | 16 | $1.6M | 13,224,504 | 6 | 3 | 2 | 0.5% |
| Q2 2019 | 16 | $1.5M | 13,351,541 | 6 | 5 | 2 | 0.5% |
| Q1 2019 | 11 | $3.8M | 3,648,744 | 1 | 4 | 2 | 1.7% |
| Q4 2018 | 19 | $5.4M | 4,283,176 | 3 | 1 | 0 | 3.1% |