Security key
46489V104
Lantheus Holdings, Inc. - Common Stock, par value $0.01 per share (the "Shares") (CATX)
CUSIP: 46489V104
Q4 2023 13F Holders as of 31 Dec 2023
- Security type / class
- Equity / Common Stock, par value $0.01 per share (the "Shares")
- Total 13F shares
- 36,552,538
- Total 13F value
- $14,693,582
- Share change
- +2,378
- SEC-reported price per share
- $0.40
- Number of holders
- 47
- Value change
- +$32,342
- Number of buys
- 15
- Number of sells
- 15
- Shares outstanding
- 66,188,768
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2023
Institutions
47
Top holders
10
CATX full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2025
Lantheus Holdings, Inc. SEC filings
Lantheus Holdings, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 46489V104
Recent filing periods:
Ownership snapshot
Top reported holders of CATX - Lantheus Holdings, Inc. - Common Stock, par value $0.01 per share (the "Shares") (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
Janus Henderson Group Ltd.
Disclosed value leader
Janus Henderson Group Ltd.
Comparable rows
15/15
Latest evidence
30 Sep 2023
13F
Lead comparable stake: 4.7%
Showing 1-6 of 15 holder rows.
Quick read
Janus Henderson Group Ltd. leads the comparable SEC ownership view at 4.7%.
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 Janus Henderson Group Ltd.'s linked filing trail.
Comparable ownership
Top 5
Janus Henderson Group Ltd.
4.7%
ALLIANCEBERNSTEIN L.P.
3.5%
FARALLON CAPITAL MANAGEMENT, L.L.C.
2.5%
PRICE T ROWE ASSOCIATES INC /MD/
2.3%
AMERICAN CENTURY COMPANIES INC
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 |
|---|---|---|---|---|---|
| Janus Henderson Group Ltd. |
13F
Company
|
4.7%
|
$214,703,942
3,090,150 shares
|
— | 30 Sep 2023 |
| ALLIANCEBERNSTEIN L.P. |
13F
Company
|
3.5%
|
$157,760,524
2,270,589 shares
|
— | 30 Sep 2023 |
| FARALLON CAPITAL MANAGEMENT, L.L.C. |
13F
Company
|
2.5%
|
$111,063,780
1,598,500 shares
|
— | 30 Sep 2023 |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
Company
|
2.3%
|
$104,723,000
1,507,231 shares
|
— | 30 Sep 2023 |
| AMERICAN CENTURY COMPANIES INC |
13F
Company
|
2%
|
$90,386,839
1,300,904 shares
|
— | 30 Sep 2023 |
| WESTFIELD CAPITAL MANAGEMENT CO LP |
13F
Company
|
2%
|
$89,934,287
1,294,391 shares
|
— | 30 Sep 2023 |
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 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
47
Shares
36,552,538
Rows available
47
| 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 2023 vs Q1 2026 Across Filers
Q1 2026 holders
2
Q4 2023 holders
47
Holder diff
45
| Investor | Q1 2026 Shares | Q4 2023 Shares | Share Diff | Share Chg % | Q1 2026 value | Q4 2023 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend