SELLAS Life Sciences Group, Inc. (SLS) — Institutional Holders, Q2 2026
193 institutional investment managers reported a SLS position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $1.1B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
SLS in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- STATE STREETAdded · +4,600,202 sh+$67.9M
- Anson Funds ManagementNew · +4,500,000 sh+$66.4M
- BlackRockAdded · +2,871,892 sh+$42.4M
- SUSQUEHANNA INTERNATIONAL GROUP, LLPAdded · +1,653,541 sh+$24.4M
- BNP PARIBAS FINANCIAL MARKETSAdded · +1,025,006 sh+$15.1M
Biggest sellers
- MARSHALL WACE, LLPSold out · -2,037,162 sh-$30.1M
- TWO SIGMA INVESTMENTSSold out · -403,165 sh-$6.0M
- Invesco Ltd.Trimmed · -322,738 sh-$4.8M
- VISION FINANCIAL MARKETSTrimmed · -294,600 sh-$4.3M
- NuveenTrimmed · -252,245 sh-$3.7M
SLS 13F holders ranked 1–100 of 193
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | BlackRock#1 · 15,070,302 sh | 15,070,302 | $222.4M | <0.01% | +23.5% |
| 2 | STATE STREET#2 · 12,996,558 sh | 12,996,558 | $191.8M | <0.01% | +54.8% |
| 3 | VANGUARD CAPITAL MANAGEMENT#3 · 8,226,105 sh | 8,226,105 | $121.4M | <0.01% | +9.3% |
| 4 | GEODE CAPITAL MANAGEMENT#4 · 4,884,175 sh | 4,884,175 | $72.1M | <0.01% | +24.8% |
| 5 | Anson Funds Management#5 · 4,500,000 sh | 4,500,000 | $66.4M | 3.94% | New |
| 6 | VANGUARD PORTFOLIO MANAGEMENT#6 · 2,161,099 sh | 2,161,099 | $31.9M | <0.01% | +47.7% |
| 7 | SUSQUEHANNA INTERNATIONAL GROUP, LLP#7 · 2,050,597 sh | 2,050,597 | $30.3M | <0.01% | +416.5% |
| 8 | JONES FINANCIAL COMPANIES LLLP#8 · 2,304,561 sh | 2,304,561 | $28.6M | 0.01% | +37.6% |
| 9 | NORTHERN#9 · 1,619,928 sh | 1,619,928 | $23.9M | <0.01% | +27.0% |
| 10 | VANGUARD FIDUCIARY#10 · 1,335,166 sh | 1,335,166 | $19.7M | <0.01% | +11.0% |
| 11 | UBS Group AG#11 · 1,252,757 sh | 1,252,757 | $18.5M | <0.01% | +68.1% |
| 12 | MORGAN STANLEY#12 · 1,236,261 sh | 1,236,261 | $18.2M | <0.01% | -7.5% |
| 13 | DAGCO#13 · 1,232,433 sh | 1,232,433 | $18.2M | — | +19.8% |
| 14 | BNP PARIBAS FINANCIAL MARKETS#14 · 1,072,022 sh | 1,072,022 | $15.8M | <0.01% | +2180.1% |
| 15 | BANK OF AMERICA#15 · 787,949 sh | 787,949 | $11.6M | <0.01% | +22.8% |
| 16 | WELLINGTON MANAGEMENT GROUP LLP#16 · 597,309 sh | 597,309 | $8.8M | <0.01% | +73.2% |
| 17 | GOLDMAN SACHS GROUP#17 · 585,035 sh | 585,035 | $8.6M | <0.01% | +5.2% |
| 18 | CHARLES SCHWAB INVESTMENT MANAGEMENT#18 · 565,008 sh | 565,008 | $8.3M | <0.01% | +17.6% |
| 19 | Bank of New York Mellon#19 · 530,025 sh | 530,025 | $7.8M | <0.01% | +10.8% |
| 20 | JANE STREET GROUP#20 · 508,429 sh | 508,429 | $7.5M | <0.01% | New |
| 21 | Nuveen#21 · 418,729 sh | 418,729 | $6.2M | <0.01% | -37.6% |
| 22 | Opus Capital Group#22 · 385,604 sh | 385,604 | $5.7M | 0.55% | +11.3% |
| 23 | Invesco Ltd.#23 · 375,342 sh | 375,342 | $5.5M | <0.01% | -46.2% |
| 24 | Swiss National Bank#24 · 360,400 sh | 360,400 | $5.3M | <0.01% | New |
| 25 | XTX Topco Ltd#25 · 359,090 sh | 359,090 | $5.3M | 0.07% | New |
| 26 | WELLS FARGO & COMPANY#26 · 328,819 sh | 328,819 | $4.9M | <0.01% | +45.7% |
| 27 | CITIGROUP#27 · 326,591 sh | 326,591 | $4.8M | <0.01% | +1173.5% |
| 28 | RENAISSANCE TECHNOLOGIES#28 · 310,364 sh | 310,364 | $4.6M | <0.01% | New |
| 29 | Everhart Financial Group#29 · 288,018 sh | 288,018 | $4.3M | — | -21.0% |
| 30 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#30 · 273,403 sh | 273,403 | $4.0M | <0.01% | New |
| 31 | Rafferty Asset Management#31 · 239,892 sh | 239,892 | $3.5M | <0.01% | -3.8% |
| 32 | RHUMBLINE ADVISERS#32 · 230,402 sh | 230,402 | $3.4M | <0.01% | +18.6% |
| 33 | LEUCADIA NATIONAL#33 · 200,459 sh | 200,459 | $3.0M | 0.02% | New |
| 34 | Mariner#34 · 198,212 sh | 198,212 | $2.9M | <0.01% | +14.2% |
| 35 | DEUTSCHE BANK AG\#35 · 190,128 sh | 190,128 | $2.8M | <0.01% | +38.1% |
| 36 | ALPS ADVISORS#36 · 188,107 sh | 188,107 | $2.8M | 0.01% | New |
| 37 | Legal & General Group Plc#37 · 167,800 sh | 167,800 | $2.5M | <0.01% | +1008.2% |
| 38 | LPL Financial#38 · 155,663 sh | 155,663 | $2.3M | <0.01% | +13.5% |
| 39 | PRICE T ROWE ASSOCIATES#39 · 155,066 sh | 155,066 | $2.3M | <0.01% | +27.0% |
| 40 | SIMPLEX TRADING#40 · 154,099 sh | 154,099 | $2.3M | <0.01% | -47.8% |
| 41 | Vontobel Holding Ltd.#41 · 146,762 sh | 146,762 | $2.2M | — | -15.7% |
| 42 | Vanguard Global Advisers#42 · 130,005 sh | 130,005 | $1.9M | <0.01% | +1.5% |
| 43 | Toroso Investments#43 · 128,761 sh | 128,761 | $1.9M | <0.01% | +43.1% |
| 44 | VANGUARD ASSET MANAGEMENT, Ltd#44 · 125,989 sh | 125,989 | $1.9M | <0.01% | New |
| 45 | PROFUND ADVISORS#45 · 120,607 sh | 120,607 | $1.8M | 0.05% | +7.9% |
| 46 | FRANKLIN RESOURCES#46 · 119,156 sh | 119,156 | $1.8M | <0.01% | New |
| 47 | MIRAE ASSET GLOBAL ETFS Ltd.#47 · 114,775 sh | 114,775 | $1.7M | <0.01% | +16.8% |
| 48 | MetLife Investment Management#48 · 110,082 sh | 110,082 | $1.6M | <0.01% | +16.8% |
| 49 | JPMORGAN CHASE#49 · 100,135 sh | 100,135 | $1.5M | <0.01% | +22.4% |
| 50 | Daiwa Securities Group#50 · 102,500 sh | 102,500 | $1.5M | <0.01% | +4559.1% |
| 51 | HIGHBRIDGE CAPITAL MANAGEMENT#51 · 99,400 sh | 99,400 | $1.5M | 0.04% | New |
| 52 | GSA CAPITAL PARTNERS LLP#52 · 96,429 sh | 96,429 | $1.4M | 0.09% | -40.9% |
| 53 | STATE OF WISCONSIN INVESTMENT BOARD#53 · 95,210 sh | 95,210 | $1.4M | <0.01% | New |
| 54 | Harvest Investment Services#54 · 94,482 sh | 94,482 | $1.4M | 0.22% | New |
| 55 | Zurcher Kantonalbank (Zurich Cantonalbank)#55 · 83,305 sh | 83,305 | $1.2M | <0.01% | New |
| 56 | Jupiter Topco#56 · 79,600 sh | 79,600 | $1.2M | <0.01% | — |
| 57 | Gotham Asset Management#57 · 74,344 sh | 74,344 | $1.1M | <0.01% | New |
| 58 | FULCRUM WEALTH ADVISORS#58 · 73,253 sh | 73,253 | $1.1M | — | -32.9% |
| 59 | Russell Investments Group, Ltd.#59 · 71,225 sh | 71,225 | $1.1M | <0.01% | +295.6% |
| 60 | Creative Planning#60 · 70,643 sh | 70,643 | $1.0M | <0.01% | +74.1% |
| 61 | ALLIANCEBERNSTEIN L.P.#61 · 236,060 sh | 236,060 | $998.5K | <0.01% | +44.0% |
| 62 | NEW YORK STATE COMMON RETIREMENT FUND#62 · 66,300 sh | 66,300 | $978.6K | <0.01% | +70.0% |
| 63 | NATIONAL BANK OF CANADA#63 · 60,443 sh | 60,443 | $892.1K | <0.01% | +2432.2% |
| 64 | OSAIC#64 · 60,284 sh | 60,284 | $889.8K | <0.01% | +27.5% |
| 65 | FIFTH THIRD BANCORP#65 · 60,190 sh | 60,190 | $888.4K | <0.01% | +0.6% |
| 66 | AQR CAPITAL MANAGEMENT#66 · 58,120 sh | 58,120 | $857.9K | <0.01% | +7.6% |
| 67 | State of New Jersey Common Pension Fund D#67 · 58,067 sh | 58,067 | $857.1K | <0.01% | New |
| 68 | Police & Firemen's Retirement System of New Jersey#68 · 55,666 sh | 55,666 | $821.6K | <0.01% | +18.2% |
| 69 | Arizona State Retirement System#69 · 49,552 sh | 49,552 | $731.4K | <0.01% | New |
| 70 | Caption Management#70 · 49,373 sh | 49,373 | $728.7K | <0.01% | New |
| 71 | MANUFACTURERS LIFE INSURANCE COMPANY, THE#71 · 48,937 sh | 48,937 | $722.3K | <0.01% | +7.1% |
| 72 | MERCER GLOBAL ADVISORS#72 · 48,383 sh | 48,383 | $714.1K | <0.01% | New |
| 73 | Vanguard Investments Australia, Ltd.#73 · 46,385 sh | 46,385 | $684.6K | <0.01% | New |
| 74 | COMMONWEALTH EQUITY SERVICES#74 · 45,087 sh | 45,087 | $665.5K | <0.01% | +17.2% |
| 75 | INSTRUMENTAL WEALTH#75 · 44,914 sh | 44,914 | $662.9K | — | 0.0% |
| 76 | Virtus Investment Advisers#76 · 41,788 sh | 41,788 | $616.8K | 0.14% | New |
| 77 | Accurate Wealth Management#77 · 47,462 sh | 47,462 | $614.7K | — | +45.5% |
| 78 | AXXCESS WEALTH MANAGEMENT#78 · 41,373 sh | 41,373 | $610.7K | — | +17.0% |
| 79 | KLP KAPITALFORVALTNING AS#79 · 40,700 sh | 40,700 | $600.7K | <0.01% | New |
| 80 | SJS Investment Consulting#80 · 40,000 sh | 40,000 | $590.4K | — | +60.0% |
| 81 | Wealthfront Advisers#81 · 39,822 sh | 39,822 | $587.8K | <0.01% | +248.2% |
| 82 | VOYA INVESTMENT MANAGEMENT#82 · 37,298 sh | 37,298 | $550.5K | <0.01% | +27.5% |
| 83 | Quantinno Capital Management#83 · 37,036 sh | 37,036 | $546.7K | <0.01% | -50.2% |
| 84 | VISIONARY HORIZONS#84 · 36,000 sh | 36,000 | $531.4K | — | 0.0% |
| 85 | BARCLAYS PLC#85 · 35,783 sh | 35,783 | $528.2K | <0.01% | +10.4% |
| 86 | Kestra Advisory Services#86 · 34,980 sh | 34,980 | $516.3K | <0.01% | +20.0% |
| 87 | NORTHSTAR ASSET MANAGEMENT#87 · 45,000 sh | 45,000 | $509.4K | — | -10.0% |
| 88 | MANGROVE PARTNERS IM#88 · 34,140 sh | 34,140 | $503.9K | 0.03% | New |
| 89 | E Fund Management , Ltd.#89 · 33,825 sh | 33,825 | $499.3K | 0.01% | +7.9% |
| 90 | INTECH INVESTMENT MANAGEMENT#90 · 32,182 sh | 32,182 | $475.0K | <0.01% | -37.2% |
| 91 | Scissortail Wealth Management#91 · 31,322 sh | 31,322 | $462.3K | 0.09% | +14.6% |
| 92 | PRUDENTIAL FINANCIAL#92 · 31,110 sh | 31,110 | $459.2K | <0.01% | +8.4% |
| 93 | Sculptor Capital#93 · 30,300 sh | 30,300 | $447.2K | <0.01% | New |
| 94 | Walleye Capital#94 · 30,116 sh | 30,116 | $444.5K | <0.01% | New |
| 95 | Genesee Capital Advisors#95 · 30,000 sh | 30,000 | $442.8K | — | 0.0% |
| 96 | Walleye Trading#96 · 28,965 sh | 28,965 | $427.5K | <0.01% | New |
| 97 | SEI INVESTMENTS#97 · 26,581 sh | 26,581 | $392.3K | <0.01% | 0.0% |
| 98 | STRS OHIO#98 · 26,100 sh | 26,100 | $385.2K | <0.01% | New |
| 99 | FMR#99 · 25,533 sh | 25,533 | $376.9K | 0.00% | +64.1% |
| 100 | ProShare Advisors#100 · 24,711 sh | 24,711 | $364.7K | <0.01% | -0.8% |
Funds that sold out of SLS in Q2 2026 (27)
Held SLS at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| MARSHALL WACE, LLP2,037,162 sh | 2,037,162 | $8.6M |
| TWO SIGMA INVESTMENTS403,165 sh | 403,165 | $1.7M |
| Virtu Financial221,829 sh | 221,829 | $938.0K |
| MILLENNIUM MANAGEMENT159,524 sh | 159,524 | $674.8K |
| TEMA ETFS90,007 sh | 90,007 | $380.7K |
| BALYASNY ASSET MANAGEMENT L.P.81,695 sh | 81,695 | $345.6K |
| CITADEL ADVISORS64,641 sh | 64,641 | $273.4K |
| EntryPoint Capital48,224 sh | 48,224 | $204.0K |
| FARALLON CAPITAL MANAGEMENT40,000 sh | 40,000 | $169.2K |
| OXFORD ASSET MANAGEMENT LLP35,501 sh | 35,501 | $150.2K |
| Magnetar Financial35,032 sh | 35,032 | $148.2K |
| Scientech Research34,096 sh | 34,096 | $144.2K |
| STONERIDGE INVESTMENT PARTNERS20,287 sh | 20,287 | $86.0K |
| Grange Capital17,651 sh | 17,651 | $74.7K |
| SIG BROKERAGE15,429 sh | 15,429 | $65.3K |
| TWO SIGMA SECURITIES14,437 sh | 14,437 | $61.1K |
| QUADRANT CAPITAL GROUP2,118 sh | 2,118 | $53.4K |
| Verition Fund Management12,262 sh | 12,262 | $51.9K |
| ENVESTNET ASSET MANAGEMENT10,941 sh | 10,941 | $46.3K |
| Marex Group plc10,833 sh | 10,833 | $45.8K |
| GTS SECURITIES10,329 sh | 10,329 | $43.7K |
| Concurrent Investment Advisors10,085 sh | 10,085 | $42.7K |
| Private Wealth Management Group10,000 sh | 10,000 | $42.3K |
| Marathon Trading Investment Management1,191 sh | 1,191 | $5.0K |
| Root Financial Partners60 sh | 60 | $254.00 |
| TWIN PEAKS WEALTH ADVISORS40 sh | 40 | $169.00 |
| MAI Capital Management2 sh | 2 | $9.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.