Security key
045396108
ASSEMBLY BIOSCIENCES, INC. - Common Stock, par value $0.001 (ASMB)
CUSIP: 045396108
Q4 2018 13F Holders as of 31 Dec 2018
- Security type / class
- Equity / Common Stock, par value $0.001
- Total 13F shares
- 21,336,229
- Total 13F value
- $482,552,988
- Share change
- -330,360
- Put/Call ratio
- 95%
- SEC-reported price per share
- $22.62
- Number of holders
- 105
- Value change
- -$22,408,761
- Number of buys
- 47
- Number of sells
- 61
- Shares outstanding
- 19,829,040
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2018
Institutions
105
Top holders
10
ASMB full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2019
Previous quarter: Q3 2018
ASSEMBLY BIOSCIENCES, INC. SEC filings
ASSEMBLY BIOSCIENCES, INC. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 045396108
Recent filing periods:
Ownership snapshot
Top reported holders of ASMB - ASSEMBLY BIOSCIENCES, INC. - Common Stock, par value $0.001 (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
EcoR1 Capital, LLC
Disclosed value leader
EcoR1 Capital, LLC
Comparable rows
15/15
Latest evidence
30 Sep 2018
13F
Lead comparable stake: 15%
Showing 1-6 of 15 holder rows.
Quick read
EcoR1 Capital, LLC leads the comparable SEC ownership view at 15%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens EcoR1 Capital, LLC's linked filing trail.
Comparable ownership
Top 5
EcoR1 Capital, LLC
15%
JENNISON ASSOCIATES LLC
12%
WELLINGTON MANAGEMENT GROUP LLP
10%
BlackRock Finance, Inc.
9.3%
ORBIMED ADVISORS LLC
6.2%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| EcoR1 Capital, LLC |
13F
Company
|
15%
|
$109,309,000
2,943,164 shares
|
— | 30 Sep 2018 |
| JENNISON ASSOCIATES LLC |
13F
Company
|
12%
|
$92,003,000
2,477,182 shares
|
— | 30 Sep 2018 |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
Company
|
10%
|
$76,097,000
2,048,927 shares
|
— | 30 Sep 2018 |
| BlackRock Finance, Inc. |
13F
Company
|
9.3%
|
$68,557,000
1,845,956 shares
|
— | 30 Sep 2018 |
| ORBIMED ADVISORS LLC |
13F
Company
|
6.2%
|
$45,807,000
1,233,371 shares
|
— | 30 Sep 2018 |
| VANGUARD GROUP INC |
13F
Company
|
5.3%
|
$39,052,000
1,051,454 shares
|
— | 30 Sep 2018 |
How to read this table
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.
13F holder rows
Institutional holders as of Q4 2018
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
105
Shares
21,336,229
Rows available
105
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2018 vs Q3 2018 Across Filers
Q3 2018 holders
110
Q4 2018 holders
105
Holder diff
-5
| Investor | Q3 2018 Shares | Q4 2018 Shares | Share Diff | Share Chg % | Q3 2018 value | Q4 2018 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend