LORD, ABBETT & CO. LLC

Position in RYTM — Rhythm Pharmaceuticals, Inc.

CIK 728100 JERSEY CITY, NJ

Position in RYTM

as of Mar 31, 2026 · filed May 14, 2026 Compact

Position Value

$30,348,442

-$35,967,333 QoQ

Shares Held

348,953

-43.7% QoQ

Ownership

0.509%

of shares outstanding

% of Portfolio

0.10%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2023

10 quarters on record

Voting authority Sole 84.1717939092084.ToString("F0")% Shared 0.ToString("F0")% None 15.828206090791596.ToString("F0")%

Healthcare · as of Mar 31, 2026

LORD, ABBETT & CO. LLC holds $1,298,705,726 across 29 Biotechnology names. RYTM ranks #14 (2.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	TERN	Terns Pharmaceuticals, Inc.	2,812,938	$148,298,091
2	MDGL	Madrigal Pharmaceuticals, Inc.	242,726	$127,059,779
3	COGT	Cogent Biosciences, Inc.	3,181,270	$122,447,082
4	ARGX	Argenx SE	152,083	$111,058,610
5	ABVX	Abivax S.A.	854,920	$95,195,342
6	BBIO	BridgeBio Pharma, Inc.	1,023,341	$75,993,302
7	VRTX	Vertex Pharmaceuticals Inc / Ma	166,509	$74,352,928
8	INSM	INSMED Inc	397,261	$64,960,118

10 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$30,348,442	348,953	-43.7%	Shares	Sole	2026-05-14
2025-12-31	$66,315,775	619,542	+7.6%	Shares	Sole	2026-02-13
2025-09-30	$58,168,623	575,984	+182.0%	Shares	Sole	2025-11-13
2025-06-30	$12,908,137	204,275	+50.9%	Shares	Sole	2025-08-14
2025-03-31	$7,170,019	135,360	-15.7%	Shares	Sole	2025-05-13
2024-12-31	$8,993,242	160,651	+56.5%	Shares	Sole	2025-02-14
2024-09-30	$5,377,623	102,646	+0.1%	Shares	Other	2024-12-13
2024-06-30	$4,212,385	102,591	-63.5%	Shares	Other	2024-10-07
2024-03-31	$12,182,532	281,157	-0.8%	Shares	Other	2024-10-07
2023-12-31	$13,033,322	283,518	—	Shares	Other	2024-10-07
No filing history on record for this holder in this stock.