Lantheus Holdings, Inc. - Common Stock, par value $0.01 per share (the "Shares") (CATX)

Q: What does CUSIP 46489V104 represent in this 13F holders report?

CUSIP 46489V104 is the security identifier for CATX - Lantheus Holdings, Inc. - Common Stock, par value $0.01 per share (the "Shares") used to aggregate holder disclosures.

Q: How many institutions held CATX - Lantheus Holdings, Inc. - Common Stock, par value $0.01 per share (the "Shares") in Q1 2021?

49 institutional investors reported CATX - Lantheus Holdings, Inc. - Common Stock, par value $0.01 per share (the "Shares") for Q1 2021. Use the holders table for investor-level position and value details.

CUSIP: 46489V104

Q1 2021 13F Holders as of 31 Mar 2021

Security type / class: Equity / Common Stock, par value $0.01 per share (the "Shares")
Total 13F shares: 18,533,527
Total 13F value: $20,202,242
Share change: +9,975,492
SEC-reported price per share: $1.09
Number of holders: 49
Value change: +$11,164,163
Number of buys: 31
Number of sells: 11
Shares outstanding: 66,188,768

Security key

46489V104

Report period

Q1 2021

Institutions

Top holders

CATX full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2021 Previous quarter: Q4 2020 Lantheus Holdings, Inc. SEC filings Lantheus Holdings, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 46489V104

Newer quarter: Q2 2021 Previous quarter: Q4 2020

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

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

WELLINGTON MANAGEMENT GRO...

Disclosed value leader

WELLINGTON MANAGEMENT GRO...

Comparable rows

15/15

Latest evidence

31 Dec 2020

13F Lead comparable stake: 10% Showing 1-6 of 15 holder rows.

Quick read

WELLINGTON MANAGEMENT GROUP LLP leads the comparable SEC ownership view at 10%.

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 WELLINGTON MANAGEMENT GROUP LLP's linked filing trail.

Comparable ownership Top 5

WELLINGTON MANAGEMENT GROUP LLP 10%

ARMISTICE CAPITAL, LLC 8.1%

PRICE T ROWE ASSOCIATES INC /MD/ 5.8%

FARALLON CAPITAL MANAGEMENT LLC 4.1%

INVESTMENT COUNSELORS OF MARYLAND... 3.8%

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
WELLINGTON MANAGEMENT GROUP LLP	13F Company 13F	10%	$91,040,000 6,748,734 shares	—	31 Dec 2020
ARMISTICE CAPITAL, LLC	13F Company 13F	8.1%	$70,148,000 5,200,000 shares	—	31 Dec 2020
PRICE T ROWE ASSOCIATES INC /MD/	13F Company 13F	5.8%	$50,831,000 3,768,073 shares	—	31 Dec 2020
FARALLON CAPITAL MANAGEMENT LLC	13F Company 13F	4.1%	$35,749,000 2,650,000 shares	—	31 Dec 2020
INVESTMENT COUNSELORS OF MARYLAND LLC	13F Company 13F	3.8%	$33,204,000 2,461,350 shares	—	31 Dec 2020
DIMENSIONAL FUND ADVISORS LP	13F Company 13F	2.3%	$20,177,000 1,495,759 shares	—	31 Dec 2020

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 2021

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

18,533,527

Rows available

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 2021 vs Q4 2020 Across Filers

Q4 2020 holders

Q1 2021 holders

Holder diff

Investor	Q4 2020 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q4 2020 value	Q1 2021 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend