DaveManuel.com · Institutional Ownership · Who Owns It
ASSEMBLY BIOSCIENCES INC (ASMB)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
94
Reporting holders
$516.0M
Reported value
92.0%
Of shares outstanding
0.1%
Calls
0.1%
Puts
+17
Holder change
Institutions report 18,732,844 shares against 20,360,596 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. A figure this high can overstate: where an adviser and a sub-adviser both report the same shares, both are counted.
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 |
|---|---|---|---|---|---|
| GILEAD SCIENCES, INC. | $136.8M | 4,977,089 | 8.30% | 7q | +10.5%+$13.0M |
| FARALLON CAPITAL MANAGEMENT, L.L.C. | $44.1M | 1,604,590 | 0.20% | 4q | +30.7%+$10.4M |
| Paradigm Biocapital Advisors LP | $42.7M | 1,553,748 | 0.80% | 3q | +133.6%+$24.4M |
| Commodore Capital LP | $38.9M | 1,415,000 | 2.32% | 4q | +41.5%+$11.4M |
| RA CAPITAL MANAGEMENT, L.P. | $28.0M | 1,020,410 | 0.24% | 4q | HELD |
| Jupiter Topco LLC | $23.4M | 849,309 | 0.01% | new | FIRST |
| BlackRock, Inc. | $21.1M | 766,819 | 0.00% | 8q | +278.2%+$15.5M |
| Parkman Healthcare Partners LLC | $19.8M | 721,181 | 2.03% | 4q | +75.4%+$8.5M |
| VANGUARD CAPITAL MANAGEMENT LLC | $15.4M | 558,942 | 0.00% | 2q | +14.0%+$1.9M |
| Point72 Asset Management, L.P. | $12.7M | 460,593 | 0.01% | 4q | +33.9%+$3.2M |
| Seven Fleet Capital Management LP | $11.9M | 433,147 | 1.96% | 3q | +671.5%+$10.4M |
| MILLENNIUM MANAGEMENT LLC | $8.2M | 298,807 | 0.00% | 4q | +27.9%+$1.8M |
| GEODE CAPITAL MANAGEMENT, LLC | $7.7M | 280,424 | 0.00% | 10q | +110.9%+$4.1M |
| Schonfeld Strategic Advisors LLC | $6.7M | 242,153 | 0.02% | 4q | +101.0%+$3.3M |
| AMERIPRISE FINANCIAL INC | $6.3M | 230,000 | 0.00% | new | NEW |
| DV EQUITIES, LLC | $6.2M | 226,415 | 0.89% | new | NEW |
| Aberdeen Group plc | $5.7M | 207,047 | 0.01% | new | NEW |
| Affinity Asset Advisors, LLC | $5.2M | 190,000 | 0.24% | new | NEW |
| B Group, Inc. | $4.8M | 175,706 | 2.27% | 7q | HELD |
| STATE STREET CORP | $4.7M | 171,931 | 0.00% | 10q | +203.3%+$3.2M |
| STEMPOINT CAPITAL LP | $4.7M | 170,378 | 0.81% | 4q | -54.1%-$5.5M |
| Squadron Capital Management LLC | $4.4M | 160,000 | 1.36% | new | NEW |
| Woodline Partners LP | $4.1M | 150,780 | 0.01% | new | NEW |
| Driehaus Capital Management LLC | $4.1M | 150,000 | 0.02% | new | NEW |
| Ally Bridge Group (NY) LLC | $3.8M | 140,000 | 3.40% | new | NEW |
| GOLDMAN SACHS GROUP INC | $3.8M | 137,833 | 0.00% | 4q | +280.7%+$2.8M |
| NORTHERN TRUST CORP | $3.4M | 123,029 | 0.00% | 10q | +200.0%+$2.3M |
| CITADEL ADVISORS LLC | $3.1M incl. $508.4K options CALL | 95,907 | 0.00% | 6q | +277.0%+$2.3M |
| FRANKLIN RESOURCES INC | $3.1M | 113,200 | 0.00% | new | NEW |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $2.5M | 91,153 | 0.00% | 2q | +414.3%+$2.0M |
| VANGUARD FIDUCIARY TRUST CO | $2.0M | 73,970 | 0.00% | 2q | +3.3%+$65.0K |
| HighVista Strategies LLC | $2.0M | 73,405 | 0.46% | 2q | -1.8%-$36.5K |
| Qube Research & Technologies Ltd | $1.4M | 51,488 | 0.00% | 4q | -25.7%-$488.3K |
| MONIMUS CAPITAL MANAGEMENT, LP | $1.3M | 47,580 | 0.30% | 7q | -1.7%-$22.3K |
| Trexquant Investment LP | $1.3M | 45,661 | 0.01% | 4q | +100.8%+$629.8K |
| JPMORGAN CHASE & CO | $1.3M | 46,385 | 0.00% | 10q | -14.0%-$204.3K |
| MORGAN STANLEY | $1.2M | 45,219 | 0.00% | 10q | +36.8%+$334.3K |
| GSA CAPITAL PARTNERS LLP | $1.2M | 42,931 | 0.07% | 5q | -4.7%-$58.2K |
| XTX Topco Ltd | $1.2M | 42,918 | 0.02% | 2q | +297.9%+$883.0K |
| UBS Group AG | $1.1M | 41,806 | 0.00% | 10q | +11385.2%+$1.1M |
| RENAISSANCE TECHNOLOGIES LLC | $1.1M | 39,441 | 0.00% | 10q | +152.0%+$653.7K |
| Squarepoint Ops LLC | $940.2K | 34,214 | 0.00% | 2q | +43.7%+$286.1K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $800.4K | 29,128 | 0.00% | new | NEW |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $742.0K CALL+PUT | options only | 0.00% | 4q | OPTIONS |
| BNP PARIBAS FINANCIAL MARKETS | $665.1K | 24,203 | 0.00% | 7q | +16143.6%+$661.0K |
| Bank of New York Mellon Corp | $659.9K | 24,015 | 0.00% | new | NEW |
| Connor, Clark & Lunn Investment Management Ltd. | $653.1K | 23,765 | 0.00% | 4q | +9.2%+$55.1K |
| Caption Management, LLC | $627.3K | 22,829 | 0.00% | 4q | -72.1%-$1.6M |
| ADAR1 Capital Management, LLC | $561.9K | 20,447 | 0.03% | 4q | +2.5%+$13.7K |
| Palumbo Wealth Management LLC | $545.9K | 19,865 | 0.11% | 7q | +1.1%+$6.1K |
| TWO SIGMA INVESTMENTS, LP | $490.7K | 17,858 | 0.00% | 2q | -13.1%-$74.0K |
| Engineers Gate Manager LP | $488.2K | 17,766 | 0.01% | 3q | +88.5%+$229.3K |
| MARSHALL WACE, LLP | $487.4K | 17,735 | 0.00% | 4q | -89.1%-$4.0M |
| Nuveen, LLC | $463.7K | 16,875 | 0.00% | new | NEW |
| Eversept Partners, LP | $453.7K | 16,510 | 0.02% | 3q | -59.6%-$669.9K |
| Susquehanna Portfolio Strategies, LLC | $415.7K | 15,129 | 0.01% | 3q | +7.3%+$28.3K |
| Virtus Investment Advisers, LLC | $391.6K | 14,251 | 0.09% | 3q | +88.7%+$184.1K |
| AMERICAN CENTURY COMPANIES INC | $363.8K | 13,239 | 0.00% | 2q | +44.6%+$112.3K |
| Invesco Ltd. | $326.0K | 11,864 | 0.00% | new | NEW |
| RHUMBLINE ADVISERS | $318.5K | 11,590 | 0.00% | 10q | +6000.0%+$313.3K |
| Integrated Quantitative Investments LLC | $276.9K | 10,078 | 0.05% | new | NEW |
| DEUTSCHE BANK AG\ | $264.2K | 9,615 | 0.00% | new | NEW |
| BANK OF AMERICA CORP /DE/ | $262.9K | 9,567 | 0.00% | 9q | -12.2%-$36.7K |
| CANADA PENSION PLAN INVESTMENT BOARD | $233.6K | 8,500 | 0.00% | 3q | HELD |
| EntryPoint Capital, LLC | $227.7K | 8,285 | 0.06% | 2q | -33.1%-$112.6K |
| WELLS FARGO & COMPANY/MN | $226.8K | 8,253 | 0.00% | new | NEW |
| PRICE T ROWE ASSOCIATES INC /MD/ | $226.0K | 8,203 | 0.00% | new | NEW |
| Brevan Howard Capital Management LP | $213.4K | 7,765 | 0.00% | 2q | -30.1%-$92.0K |
| Persistent Asset Partners Ltd | $190.8K | 6,942 | 0.06% | new | NEW |
| BARCLAYS PLC | $168.5K | 6,133 | 0.00% | 10q | -77.3%-$574.8K |
| MetLife Investment Management, LLC | $161.7K | 5,885 | 0.00% | new | NEW |
| Vanguard Global Advisers, LLC | $126.8K | 4,615 | 0.00% | 2q | HELD |
| CITIGROUP INC | $125.1K | 4,554 | 0.00% | 3q | -29.8%-$53.0K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $124.2K | 4,519 | 0.00% | new | NEW |
| NEW YORK STATE COMMON RETIREMENT FUND | $115.4K | 4,200 | 0.00% | new | NEW |
| Police & Firemen's Retirement System of New Jersey | $79.9K | 2,907 | 0.00% | new | NEW |
| Legal & General Group Plc | $26.3K | 958 | 0.00% | new | NEW |
| Ameritas Investment Partners, Inc. | $24.6K | 895 | 0.00% | new | NEW |
| Russell Investments Group, Ltd. | $21.7K | 788 | 0.00% | new | NEW |
| HSBC HOLDINGS PLC | $17.1K | 16,935? | 0.00% | new | |
| Tower Research Capital LLC (TRC) | $14.6K | 530 | 0.00% | 3q | -2.6% |
| ROYAL BANK OF CANADA | $12.0K | 440 | 0.00% | 2q | +2650.0%+$11.6K |
| SIMPLEX TRADING, LLC | $11.0K CALL | options only | 0.00% | 4q | OPTIONS |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | $7.1K | 260 | 0.00% | 7q | HELD |
| Accent Capital Management, LLC | $5.8K | 212 | 0.00% | 2q | +49.3%+$1.9K |
| Sterling Capital Management LLC | $5.5K | 199 | 0.00% | new | NEW |
| Truvestments Capital LLC | $5.3K | 193 | 0.00% | new | NEW |
| FMR LLC | $4.9K | 178 | 0.00% | new | NEW |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $3.7K | 136 | 0.00% | new | NEW |
| OSAIC HOLDINGS, INC. | $2.7K | 100 | 0.00% | 4q | HELD |
| Caitong International Asset Management Co., Ltd | $2.1K | 75 | 0.00% | new | NEW |
| Quarry LP | $2.1K | 75 | 0.00% | new | NEW |
| EverSource Wealth Advisors, LLC | $1.5K | 55 | 0.00% | 10q | HELD |
| BFC Planning, Inc. | $1.1K | 41 | 0.00% | 7q | HELD |
| Allworth Financial LP | $275 | 10 | 0.00% | 3q | -65.5% |
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-08-13 | 2026-08-13 | Acquisition or disposal completed | filing |
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 | 6 | $31.2K | 1,338 | 4 | 1 | 1 | 0.0% |
| Q2 2026 | 94 | $516.0M | 18,732,844 | 31 | 35 | 18 | 0.2% |
| Q1 2026 | 77 | $381.5M | 13,754,095 | 13 | 28 | 17 | 0.0% |
| Q4 2025 | 71 | $466.8M | 13,724,255 | 21 | 23 | 13 | 0.0% |
| Q3 2025 | 60 | $336.3M | 12,482,656 | 33 | 16 | 3 | 3.4% |
| Q2 2025 | 34 | $57.1M | 3,148,573 | 5 | 7 | 8 | 0.0% |
| Q1 2025 | 37 | $30.4M | 3,175,680 | 5 | 11 | 10 | 0.0% |
| Q4 2024 | 36 | $50.3M | 3,185,802 | 5 | 11 | 7 | 0.0% |
| Q3 2024 | 30 | $15.6M | 1,030,496 | 4 | 8 | 6 | 0.0% |
| Q2 2024 | 27 | $16.1M | 1,175,323 | 5 | 9 | 6 | 0.0% |
| Q1 2024 | 24 | $8.7M | 652,234 | 24 | 0 | 0 | 0.0% |
| Q4 2023 | 43 | $7.1M | 8,678,074 | 15 | 9 | 6 | 0.1% |
| Q3 2023 | 32 | $8.6M | 9,738,224 | 2 | 3 | 11 | 0.1% |
| Q2 2023 | 31 | $12.1M | 10,465,062 | 3 | 4 | 9 | 0.1% |
| Q1 2023 | 38 | $11.1M | 13,166,187 | 4 | 9 | 14 | 0.5% |
| Q4 2022 | 40 | $18.5M | 14,193,684 | 2 | 9 | 16 | 0.1% |
| Q3 2022 | 48 | $27.3M | 16,595,698 | 3 | 10 | 21 | 0.2% |
| Q2 2022 | 53 | $36.3M | 17,189,871 | 7 | 12 | 21 | 0.5% |
| Q1 2022 | 54 | $615.6M | 298,799,031 | 12 | 9 | 19 | 0.0% |
| Q4 2021 | 57 | $776.1M | 333,004,524 | 8 | 19 | 16 | 0.0% |
| Q3 2021 | 60 | $1.3B | 372,356,577 | 3 | 25 | 22 | 0.1% |
| Q2 2021 | 88 | $107.8M | 27,094,419 | 15 | 29 | 34 | 2.5% |
| Q1 2021 | 103 | $134.3M | 28,673,089 | 14 | 33 | 33 | 0.8% |
| Q4 2020 | 106 | $168.0M | 27,604,963 | 27 | 38 | 24 | 0.6% |
| Q3 2020 | 114 | $653.9M | 39,725,688 | 21 | 27 | 42 | 0.1% |
| Q2 2020 | 103 | $920.0M | 39,386,933 | 16 | 46 | 22 | 0.1% |
| Q1 2020 | 96 | $789.1M | 52,697,968 | 12 | 38 | 29 | 1.0% |
| Q4 2019 | 101 | $740.7M | 35,718,595 | 21 | 40 | 25 | 1.3% |
| Q3 2019 | 94 | $281.2M | 28,019,752 | 10 | 29 | 35 | 2.0% |
| Q2 2019 | 103 | $396.9M | 28,714,673 | 28 | 39 | 20 | 2.0% |
| Q1 2019 | 99 | $582.9M | 29,351,670 | 10 | 40 | 28 | 0.8% |
| Q4 2018 | 104 | $648.6M | 28,640,018 | 2 | 0 | 3 | 0.1% |