Security key
46489V104
Lantheus Holdings, Inc. - Common Stock, par value $0.01 per share (the "Shares") (CATX)
CUSIP: 46489V104
Q1 2024 13F Holders as of 31 Mar 2024
- Security type / class
- Equity / Common Stock, par value $0.01 per share (the "Shares")
- Total 13F shares
- 247,610,707
- Total 13F value
- $294,593,119
- Share change
- +210,751,316
- SEC-reported price per share
- $1.19
- Number of holders
- 98
- Value change
- +$251,295,798
- Number of buys
- 72
- Number of sells
- 14
- Shares outstanding
- 66,188,768
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2024
Institutions
98
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
31 Dec 2023
13F
Lead comparable stake: 6.1%
Showing 1-6 of 15 holder rows.
Quick read
Janus Henderson Group Ltd. leads the comparable SEC ownership view at 6.1%.
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.
6.1%
ALLIANCEBERNSTEIN L.P.
3%
PRICE T ROWE ASSOCIATES INC /MD/
2.5%
WESTFIELD CAPITAL MANAGEMENT CO LP
2.4%
AMERICAN CENTURY COMPANIES INC
2.2%
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
|
6.1%
|
$244,752,795
3,947,571 shares
|
— | 31 Dec 2023 |
| ALLIANCEBERNSTEIN L.P. |
13F
Company
|
3%
|
$122,138,264
1,969,972 shares
|
— | 31 Dec 2023 |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
Company
|
2.5%
|
$101,301,000
1,633,869 shares
|
— | 31 Dec 2023 |
| WESTFIELD CAPITAL MANAGEMENT CO LP |
13F
Company
|
2.4%
|
$96,917,222
1,563,181 shares
|
— | 31 Dec 2023 |
| AMERICAN CENTURY COMPANIES INC |
13F
Company
|
2.2%
|
$90,000,961
1,451,628 shares
|
— | 31 Dec 2023 |
| REINHART PARTNERS, LLC. |
13F
Company
|
2.1%
|
$84,088,899
1,356,273 shares
|
— | 31 Dec 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 Q1 2024
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
98
Shares
247,610,707
Rows available
98
| 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 Q1 2024 vs Q1 2026 Across Filers
Q1 2026 holders
2
Q1 2024 holders
98
Holder diff
96
| Investor | Q1 2026 Shares | Q1 2024 Shares | Share Diff | Share Chg % | Q1 2026 value | Q1 2024 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend