Security key
04546C205
ASSERTIO HOLDINGS, INC. - Common Stock, $0.0001 par value (ASRT)
CUSIP: 04546C205
Q4 2025 13F Holders as of 31 Dec 2025
- Security type / class
- Equity / Common Stock, $0.0001 par value
- Total 13F shares
- 285,000
- Total 13F value
- $2,584,950
- Share change
- -24,876,837
- SEC-reported price per share
- $9.07
- Number of holders
- 1
- Value change
- -$19,578,918
- Number of buys
- 1
- Number of sells
- 64
- Shares outstanding
- 6,446,322
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2025
Institutions
1
Top holders
1
ASRT full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2026
Previous quarter: Q3 2025
Assertio Holdings, Inc. SEC filings
Assertio Holdings, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 04546C205
Recent filing periods:
Ownership snapshot
Top reported holders of ASRT - ASSERTIO HOLDINGS, INC. - Common Stock, $0.0001 par value (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
Nantahala Capital Managem...
Disclosed value leader
Nantahala Capital Managem...
Comparable rows
15/15
Latest evidence
30 Sep 2025
13F
Lead comparable stake: 137%
Showing 1-6 of 15 holder rows.
Quick read
Nantahala Capital Management, LLC leads the comparable SEC ownership view at 137%.
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 Nantahala Capital Management, LLC's linked filing trail.
Comparable ownership
Top 5
Nantahala Capital Management, LLC
137%
VANGUARD GROUP INC
69%
RENAISSANCE TECHNOLOGIES LLC
46%
BlackRock, Inc.
21%
GEODE CAPITAL MANAGEMENT, LLC
16%
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 |
|---|---|---|---|---|---|
| Nantahala Capital Management, LLC |
13F
Company
|
137%
|
$7,759,912
8,810,073 shares
|
— | 30 Sep 2025 |
| VANGUARD GROUP INC |
13F
Company
|
69%
|
$3,898,903
4,425,543 shares
|
— | 30 Sep 2025 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
46%
|
$2,591,556
2,942,276 shares
|
— | 30 Sep 2025 |
| BlackRock, Inc. |
13F
Company
|
21%
|
$1,202,029
1,364,701 shares
|
— | 30 Sep 2025 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
16%
|
$900,752
1,022,266 shares
|
— | 30 Sep 2025 |
| CM Management, LLC |
13F
Company
|
11%
|
$638,036
724,382 shares
|
— | 30 Sep 2025 |
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 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
1
Shares
285,000
Rows available
1
| 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 2025 vs Q3 2025 Across Filers
Q3 2025 holders
66
Q4 2025 holders
1
Holder diff
-65
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend