ASSEMBLY BIOSCIENCES, INC. (ASMB) — Institutional Holders, Q2 2026
93 institutional investment managers reported a ASMB position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $514.8M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
ASMB 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
- Paradigm Biocapital AdvisorsAdded · +888,497 sh+$24.4M
- BlackRockAdded · +564,076 sh+$15.5M
- GILEAD SCIENCESAdded · +471,698 sh+$13.0M
- Commodore CapitalAdded · +415,000 sh+$11.4M
- Seven Fleet Capital ManagementAdded · +377,000 sh+$10.4M
Biggest sellers
- BlackstoneSold out · -296,855 sh-$8.2M
- ADAGE CAPITAL PARTNERS GP, L.L.C.Sold out · -161,000 sh-$4.4M
- MARSHALL WACE, LLPTrimmed · -145,665 sh-$4.0M
- Patient Square CapitalSold out · -136,315 sh-$3.7M
- Caption ManagementTrimmed · -59,012 sh-$1.6M
ASMB 13F holders ranked 1–93 of 93
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | GILEAD SCIENCES#1 · 4,977,089 sh | 4,977,089 | $136.8M | 8.30% | +10.5% |
| 2 | FARALLON CAPITAL MANAGEMENT#2 · 1,604,590 sh | 1,604,590 | $44.1M | 0.20% | +30.7% |
| 3 | Paradigm Biocapital Advisors#3 · 1,553,748 sh | 1,553,748 | $42.7M | 0.80% | +133.6% |
| 4 | Commodore Capital#4 · 1,415,000 sh | 1,415,000 | $38.9M | 2.32% | +41.5% |
| 5 | RA CAPITAL MANAGEMENT, L.P.#5 · 1,020,410 sh | 1,020,410 | $28.0M | 0.24% | 0.0% |
| 6 | Jupiter Topco#6 · 849,309 sh | 849,309 | $23.4M | <0.01% | — |
| 7 | BlackRock#7 · 766,819 sh | 766,819 | $21.1M | <0.01% | +278.2% |
| 8 | Parkman Healthcare Partners#8 · 721,181 sh | 721,181 | $19.8M | 2.03% | +75.4% |
| 9 | VANGUARD CAPITAL MANAGEMENT#9 · 558,942 sh | 558,942 | $15.4M | <0.01% | +14.0% |
| 10 | Point72 Asset Management, L.P.#10 · 460,593 sh | 460,593 | $12.7M | 0.01% | +33.9% |
| 11 | Seven Fleet Capital Management#11 · 433,147 sh | 433,147 | $11.9M | 1.96% | +671.5% |
| 12 | MILLENNIUM MANAGEMENT#12 · 298,807 sh | 298,807 | $8.2M | <0.01% | +27.9% |
| 13 | GEODE CAPITAL MANAGEMENT#13 · 280,424 sh | 280,424 | $7.7M | <0.01% | +110.9% |
| 14 | Schonfeld Strategic Advisors#14 · 242,153 sh | 242,153 | $6.7M | 0.02% | +101.0% |
| 15 | AMERIPRISE FINANCIAL#15 · 230,000 sh | 230,000 | $6.3M | <0.01% | New |
| 16 | DV EQUITIES#16 · 226,415 sh | 226,415 | $6.2M | 0.89% | — |
| 17 | abrdn plc#17 · 207,047 sh | 207,047 | $5.7M | <0.01% | New |
| 18 | Affinity Asset Advisors#18 · 190,000 sh | 190,000 | $5.2M | 0.24% | New |
| 19 | B Group#19 · 175,706 sh | 175,706 | $4.8M | 2.27% | 0.0% |
| 20 | STATE STREET#20 · 171,931 sh | 171,931 | $4.7M | <0.01% | +203.3% |
| 21 | StemPoint Capital#21 · 170,378 sh | 170,378 | $4.7M | 0.81% | -8.1% |
| 22 | Squadron Capital Management#22 · 160,000 sh | 160,000 | $4.4M | 1.36% | New |
| 23 | Woodline Partners#23 · 150,780 sh | 150,780 | $4.1M | 0.01% | New |
| 24 | DRIEHAUS CAPITAL MANAGEMENT#24 · 150,000 sh | 150,000 | $4.1M | 0.02% | New |
| 25 | Ally Bridge Group (NY)#25 · 140,000 sh | 140,000 | $3.8M | 3.40% | New |
| 26 | GOLDMAN SACHS GROUP#26 · 137,833 sh | 137,833 | $3.8M | <0.01% | +280.7% |
| 27 | NORTHERN#27 · 123,029 sh | 123,029 | $3.4M | <0.01% | +200.0% |
| 28 | FRANKLIN RESOURCES#28 · 113,200 sh | 113,200 | $3.1M | <0.01% | New |
| 29 | CITADEL ADVISORS#29 · 95,907 sh | 95,907 | $2.6M | <0.01% | +277.0% |
| 30 | VANGUARD PORTFOLIO MANAGEMENT#30 · 91,153 sh | 91,153 | $2.5M | <0.01% | +414.3% |
| 31 | VANGUARD FIDUCIARY#31 · 73,970 sh | 73,970 | $2.0M | <0.01% | +3.3% |
| 32 | HighVista Strategies#32 · 73,405 sh | 73,405 | $2.0M | 0.46% | -1.8% |
| 33 | Qube Research & Technologies Ltd#33 · 51,488 sh | 51,488 | $1.4M | <0.01% | -25.7% |
| 34 | MONIMUS CAPITAL MANAGEMENT#34 · 47,580 sh | 47,580 | $1.3M | 0.30% | -1.7% |
| 35 | Trexquant Investment#35 · 45,661 sh | 45,661 | $1.3M | <0.01% | +100.8% |
| 36 | JPMORGAN CHASE#36 · 46,385 sh | 46,385 | $1.3M | <0.01% | -14.0% |
| 37 | MORGAN STANLEY#37 · 45,219 sh | 45,219 | $1.2M | <0.01% | +36.8% |
| 38 | GSA CAPITAL PARTNERS LLP#38 · 42,931 sh | 42,931 | $1.2M | 0.07% | -4.7% |
| 39 | XTX Topco Ltd#39 · 42,918 sh | 42,918 | $1.2M | 0.02% | +297.9% |
| 40 | UBS Group AG#40 · 41,806 sh | 41,806 | $1.1M | <0.01% | New |
| 41 | RENAISSANCE TECHNOLOGIES#41 · 39,441 sh | 39,441 | $1.1M | <0.01% | +152.0% |
| 42 | Squarepoint Ops#42 · 34,214 sh | 34,214 | $940.2K | <0.01% | +43.7% |
| 43 | CHARLES SCHWAB INVESTMENT MANAGEMENT#43 · 29,128 sh | 29,128 | $800.4K | <0.01% | New |
| 44 | BNP PARIBAS FINANCIAL MARKETS#44 · 24,203 sh | 24,203 | $665.1K | <0.01% | New |
| 45 | Bank of New York Mellon#45 · 24,015 sh | 24,015 | $659.9K | <0.01% | New |
| 46 | Connor, Clark & Lunn Investment Management Ltd.#46 · 23,765 sh | 23,765 | $653.1K | <0.01% | +9.2% |
| 47 | Caption Management#47 · 22,829 sh | 22,829 | $627.3K | <0.01% | -72.1% |
| 48 | ADAR1 Capital Management#48 · 20,447 sh | 20,447 | $561.9K | 0.03% | +2.5% |
| 49 | Palumbo Wealth Management#49 · 19,865 sh | 19,865 | $545.9K | 0.11% | +1.1% |
| 50 | TWO SIGMA INVESTMENTS#50 · 17,858 sh | 17,858 | $490.7K | <0.01% | -13.1% |
| 51 | Engineers Gate Manager#51 · 17,766 sh | 17,766 | $488.2K | <0.01% | +88.5% |
| 52 | MARSHALL WACE, LLP#52 · 17,735 sh | 17,735 | $487.4K | <0.01% | -89.1% |
| 53 | Nuveen#53 · 16,875 sh | 16,875 | $463.7K | <0.01% | New |
| 54 | Eversept Partners#54 · 16,510 sh | 16,510 | $453.7K | 0.02% | -59.6% |
| 55 | Susquehanna Portfolio Strategies#55 · 15,129 sh | 15,129 | $415.7K | <0.01% | +7.3% |
| 56 | Virtus Investment Advisers#56 · 14,251 sh | 14,251 | $391.6K | 0.09% | +88.7% |
| 57 | AMERICAN CENTURY COMPANIES#57 · 13,239 sh | 13,239 | $363.8K | <0.01% | +44.6% |
| 58 | Invesco Ltd.#58 · 11,864 sh | 11,864 | $326.0K | 0.00% | New |
| 59 | RHUMBLINE ADVISERS#59 · 11,590 sh | 11,590 | $318.5K | <0.01% | +6000.0% |
| 60 | Integrated Quantitative Investments#60 · 10,078 sh | 10,078 | $276.9K | 0.05% | New |
| 61 | DEUTSCHE BANK AG\#61 · 9,615 sh | 9,615 | $264.2K | <0.01% | New |
| 62 | BANK OF AMERICA#62 · 9,567 sh | 9,567 | $262.9K | 0.00% | -12.2% |
| 63 | CANADA PENSION PLAN INVESTMENT BOARD#63 · 8,500 sh | 8,500 | $233.6K | <0.01% | 0.0% |
| 64 | EntryPoint Capital#64 · 8,285 sh | 8,285 | $227.7K | 0.06% | -33.1% |
| 65 | WELLS FARGO & COMPANY#65 · 8,253 sh | 8,253 | $226.8K | 0.00% | New |
| 66 | PRICE T ROWE ASSOCIATES#66 · 8,203 sh | 8,203 | $226.0K | 0.00% | New |
| 67 | Brevan Howard Capital Management#67 · 7,765 sh | 7,765 | $213.4K | <0.01% | -30.1% |
| 68 | Persistent Asset Partners Ltd#68 · 6,942 sh | 6,942 | $190.8K | 0.06% | New |
| 69 | BARCLAYS PLC#69 · 6,133 sh | 6,133 | $168.5K | 0.00% | -77.3% |
| 70 | MetLife Investment Management#70 · 5,885 sh | 5,885 | $161.7K | <0.01% | New |
| 71 | Vanguard Global Advisers#71 · 4,615 sh | 4,615 | $126.8K | <0.01% | 0.0% |
| 72 | CITIGROUP#72 · 4,554 sh | 4,554 | $125.1K | 0.00% | -29.8% |
| 73 | MIRAE ASSET GLOBAL ETFS Ltd.#73 · 4,519 sh | 4,519 | $124.2K | <0.01% | New |
| 74 | NEW YORK STATE COMMON RETIREMENT FUND#74 · 4,200 sh | 4,200 | $115.4K | <0.01% | New |
| 75 | Police & Firemen's Retirement System of New Jersey#75 · 2,907 sh | 2,907 | $79.9K | <0.01% | New |
| 76 | Legal & General Group Plc#76 · 958 sh | 958 | $26.3K | 0.00% | New |
| 77 | Ameritas Investment Partners#77 · 895 sh | 895 | $24.6K | <0.01% | New |
| 78 | Russell Investments Group, Ltd.#78 · 788 sh | 788 | $21.7K | 0.00% | New |
| 79 | HSBC PLC#79 · 16,935 sh | 16,935 | $17.1K | 0.00% | New |
| 80 | Tower Research Capital (TRC)#80 · 530 sh | 530 | $14.6K | <0.01% | -2.6% |
| 81 | ROYAL BANK OF CANADA#81 · 440 sh | 440 | $12.0K | 0.00% | +2650.0% |
| 82 | NORTHWESTERN MUTUAL WEALTH MANAGEMENT#82 · 260 sh | 260 | $7.1K | 0.00% | 0.0% |
| 83 | Accent Capital Management#83 · 212 sh | 212 | $5.8K | <0.01% | New |
| 84 | Sterling Capital Management#84 · 199 sh | 199 | $5.5K | — | New |
| 85 | Truvestments Capital#85 · 193 sh | 193 | $5.3K | <0.01% | New |
| 86 | FMR#86 · 178 sh | 178 | $4.9K | 0.00% | New |
| 87 | Integrated Wealth Concepts#87 · 108 sh | 108 | $3.0K | 0.00% | New |
| 88 | OSAIC#88 · 100 sh | 100 | $2.7K | 0.00% | 0.0% |
| 89 | Caitong International Asset Management , Ltd#89 · 75 sh | 75 | $2.1K | <0.01% | New |
| 90 | Quarry#90 · 75 sh | 75 | $2.1K | <0.01% | New |
| 91 | EverSource Wealth Advisors#91 · 55 sh | 55 | $1.5K | <0.01% | -72.5% |
| 92 | Allworth Financial#92 · 10 sh | 10 | $275.00 | 0.00% | -65.5% |
| 93 | CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM#93 · 136 sh | 136 | — | — | New |
Funds that sold out of ASMB in Q2 2026 (15)
Held ASMB 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 |
|---|---|---|
| Blackstone296,855 sh | 296,855 | $8.2M |
| ADAGE CAPITAL PARTNERS GP, L.L.C.161,000 sh | 161,000 | $4.5M |
| Patient Square Capital136,315 sh | 136,315 | $3.8M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP39,446 sh | 39,446 | $1.1M |
| JANE STREET GROUP34,499 sh | 34,499 | $957.3K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP32,949 sh | 32,949 | $914.3K |
| 683 Capital Management27,863 sh | 27,863 | $773.2K |
| WELLINGTON MANAGEMENT GROUP LLP26,496 sh | 26,496 | $735.3K |
| FEDERATED HERMES18,904 sh | 18,904 | $524.6K |
| Hudson Bay Capital Management16,799 sh | 16,799 | $466.2K |
| Jump Financial10,917 sh | 10,917 | $302.9K |
| OMERS ADMINISTRATION8,100 sh | 8,100 | $224.8K |
| Aquatic Capital Management220 sh | 220 | $6.1K |
| US BANCORP \DE\59 sh | 59 | $1.6K |
| FIFTH THIRD BANCORP57 sh | 57 | $1.6K |
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.