Security key
045396207
ASSEMBLY BIOSCIENCES, INC. - Common Stock, par value $0.001 per shares (the "Shares") (ASMB)
CUSIP: 045396207
Q3 2025 13F Holders as of 30 Sep 2025
- Type / Class
- Equity / Common Stock, par value $0.001 per shares (the "Shares")
- Shares outstanding
- 15,738,333
- Total 13F shares
- 12,244,439
- Share change
- +9,096,204
- Total reported value
- $313,500,808
- Price per share
- $25.60
- Number of holders
- 56
- Value change
- +$233,088,276
- Number of buys
- 45
- Number of sells
- 9
Report period
Q3 2025
Institutions
56
Top holders
10
ASMB full security history
Newer quarter: Q4 2025
Previous quarter: Q2 2025
ASSEMBLY BIOSCIENCES, INC. SEC filings
ASSEMBLY BIOSCIENCES, INC. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 045396207
Recent filing periods:
Top shareholders of ASMB - ASSEMBLY BIOSCIENCES, INC. - Common Stock, par value $0.001 per shares (the "Shares") (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| GILEAD SCIENCES, INC. |
3/4/5
13D/G
13F
|
10%+ Owner · Company |
29%
from 13D/G
|
6,801,311
mixed-class rows
|
$100,290,003 | — | 08 Aug 2025 | |
| Commodore Capital LP |
13D/G
|
— |
9.9%
|
1,615,981
|
$29,281,576 | $0 | 08 Aug 2025 | |
| RA CAPITAL MANAGEMENT, L.P. |
13D/G
|
— |
9.5%
|
1,530,615
|
$28,392,908 | $0 | 11 Aug 2025 | |
| Alexander Schornstein |
3/4/5
13D/G
|
10%+ Owner |
3.5%
from 13D/G
|
728,113
|
$10,812,478 | — | 22 Nov 2024 | |
| VANGUARD GROUP INC |
13F
|
Company |
1.6%
|
253,825
|
$4,599,309 | — | 30 Jun 2025 | |
| B Group, Inc. |
13F
|
Company |
1.2%
|
189,350
|
$3,431,022 | — | 30 Jun 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.68%
|
107,521
|
$1,948,281 | — | 30 Jun 2025 | |
| BlackRock, Inc. |
13F
|
Company |
0.57%
|
89,672
|
$1,624,858 | — | 30 Jun 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.32%
|
51,015
|
$924,601 | — | 30 Jun 2025 | |
| MONIMUS CAPITAL MANAGEMENT, LP |
13F
|
Company |
0.27%
|
42,067
|
$762,254 | — | 30 Jun 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.23%
|
35,725
|
$647,337 | — | 30 Jun 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.18%
|
28,075
|
$508,719 | — | 30 Jun 2025 | |
| FEDERATED HERMES, INC. |
13F
|
Company |
0.16%
|
25,394
|
$460,139 | — | 30 Jun 2025 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
0.13%
|
20,421
|
$369,000 | — | 30 Jun 2025 | |
| Palumbo Wealth Management LLC |
13F
|
Company |
0.12%
|
18,667
|
$338,247 | — | 30 Jun 2025 | |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.1%
|
15,225
|
$275,877 | — | 30 Jun 2025 | |
| GSA CAPITAL PARTNERS LLP |
13F
|
Company |
0.09%
|
14,840
|
$269,000 | — | 30 Jun 2025 | |
| STATE STREET CORP |
13F
|
Company |
0.09%
|
14,009
|
$253,843 | — | 30 Jun 2025 | |
| Man Group plc |
13F
|
Company |
0.08%
|
13,227
|
$239,673 | — | 30 Jun 2025 | |
| Lynx1 Capital Management LP |
13F
|
Company |
0.07%
|
10,366
|
$187,832 | — | 30 Jun 2025 | |
| UBS Group AG |
13F
|
Company |
0.02%
|
2,933
|
$53,146 | — | 30 Jun 2025 | |
| BARCLAYS PLC |
13F
|
Company |
0.02%
|
2,779
|
$50,355 | — | 30 Jun 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.01%
|
2,149
|
$38,940 | — | 30 Jun 2025 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0%
|
302
|
$5,472 | — | 30 Jun 2025 | |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO |
13F
|
Company |
0%
|
260
|
$4,711 | — | 30 Jun 2025 | |
| RAYMOND JAMES FINANCIAL INC |
13F
|
Company |
0%
|
250
|
$4,530 | — | 30 Jun 2025 | |
| Tower Research Capital LLC (TRC) |
13F
|
Company |
0%
|
250
|
$4,530 | — | 30 Jun 2025 | |
| RHUMBLINE ADVISERS |
13F
|
Company |
0%
|
190
|
$3,442 | — | 30 Jun 2025 | |
| WELLS FARGO & COMPANY/MN |
13F
|
Company |
0%
|
145
|
$2,627 | — | 30 Jun 2025 | |
| AMERIFLEX GROUP, INC. |
13F
|
Company |
0%
|
83
|
$1,418 | — | 30 Jun 2025 | |
| SBI Securities Co., Ltd. |
13F
|
Company |
0%
|
67
|
$1,214 | — | 30 Jun 2025 | |
| EverSource Wealth Advisors, LLC |
13F
|
Company |
0%
|
55
|
$997 | — | 30 Jun 2025 | |
| ROYAL BANK OF CANADA |
13F
|
Company |
0%
|
53
|
$1,000 | — | 30 Jun 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0%
|
52
|
$942 | — | 30 Jun 2025 | |
| Caitong International Asset Management Co., Ltd |
13F
|
Company |
0%
|
34
|
$616 | — | 30 Jun 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0%
|
7
|
$127 | — | 30 Jun 2025 | |
| John G. McHutchison |
3/4/5
|
Director |
—
mixed-class rows
|
21,847
mixed-class rows
|
$180,683 | — | 05 Jun 2025 | |
| Michael P. Samar |
3/4/5
|
Chief Financial Officer |
—
class O/S missing
|
77,228
|
$61,782 | — | 25 Jul 2022 | |
| Michael Houghton |
3/4/5
|
Director |
—
mixed-class rows
|
6,702
mixed-class rows
|
$49,998 | — | 05 Jun 2025 | |
| Luisa M. Stamm |
3/4/5
|
Chief Medical Officer |
—
mixed-class rows
|
152,815
mixed-class rows
|
$32,252 | — | 29 Mar 2022 | |
| Richard D. DiMarchi |
3/4/5
|
Director |
—
class O/S missing
|
20,000
|
— | — | 25 May 2022 | |
| Myron Z. Holubiak |
3/4/5
|
Director |
—
class O/S missing
|
15,000
|
— | — | 20 May 2021 | |
| Anthony E. Altig |
3/4/5
|
Director |
—
class O/S missing
|
3,500
|
— | — | 05 Jun 2025 | |
| Gina Consylman |
3/4/5
|
Director |
—
class O/S missing
|
3,500
|
— | — | 05 Jun 2025 | |
| Lisa Johnson-Pratt |
3/4/5
|
Director |
—
class O/S missing
|
3,500
|
— | — | 05 Jun 2025 | |
| Susan Mahony |
3/4/5
|
Director |
—
class O/S missing
|
3,500
|
— | — | 05 Jun 2025 | |
| William R. Ringo |
3/4/5
|
Director |
—
class O/S missing
|
3,500
|
— | — | 05 Jun 2025 |
Institutional Holders of ASSEMBLY BIOSCIENCES, INC. - Common Stock, par value $0.001 per shares (the "Shares") (ASMB) as of Q3 2025
As of 30 Sep 2025,
ASSEMBLY BIOSCIENCES, INC. - Common Stock, par value $0.001 per shares (the "Shares") (ASMB) was held by
56 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
12,244,439 shares.
The largest 10 holders included
GILEAD SCIENCES, INC., FARALLON CAPITAL MANAGEMENT LLC, RA CAPITAL MANAGEMENT, L.P., Commodore Capital LP, JANUS HENDERSON GROUP PLC, VANGUARD GROUP INC, Frazier Life Sciences Management, L.P., Blackstone Inc., Point72 Asset Management, L.P., and Parkman Healthcare Partners LLC.
This page lists
56
institutional shareholders reporting positions in this security
for the Q3 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q3 2025 vs Q2 2025 Across Filers
Q2 2025 holders
33
Q3 2025 holders
56
Holder diff
23
| Investor | Q2 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q2 2025 Value $ | Q3 2025 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.