Rhythm Pharmaceuticals, Inc.

RYTM

Exchange: Nasdaq
Industry: Pharmaceutical Preparations
SEC CIK: 0001649904

SEC filings (opens in a new tab)

In the last 90 days, Rhythm Pharmaceuticals, Inc. insiders filed 0 open-market purchases and 6 sales; 305 institutions reported holding it in 13F filings for Q2 2026, worth $8.55B in total; Duquesne Family Office is the only superinvestor holding it.

Q3 2024 vs. Q2 2024

How the institutions holding Rhythm Pharmaceuticals, Inc. changed between Q2 2024 and Q3 2024.

All holders in Q3 2024 All holders in Q2 2024

13F holders of RYTM: Q2 2024 compared with Q3 2024
Measure	Q2 2024	Of which not filed for Q3 2024	Q3 2024	Change
Holders	165	1	176	+12
Shares	69.3M	6.74M	67.7M	+5.14M (+8.2%)
Value	$2.85B	$276.8M	$3.55B	+$976.9M (+38.0%)

1 institution that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so the changes leave them out.

New holders (31)

Institutions that held Rhythm Pharmaceuticals, Inc. at the end of Q3 2024 but not at the end of Q2 2024.

Institutions new to RYTM in Q3 2024
Institution	Shares	Value	% of portfolio
BlackRock, Inc.	6,889,258	$360.9M	0.01%
Loomis Sayles & Co L P	636,628	$33.4M	0.04%
Hood River Capital Management LLC	614,598	$32.2M	0.52%
Sofinnova Investments, Inc.	276,678	$14.5M	1.20%
Great Lakes Advisors, LLC	136,950	$7.17M	0.06%
Citadel Advisors LLC	102,778	$5.38M	0.01%
StemPoint Capital LP	41,268	$2.16M	0.65%
Millennium Management LLC	36,977	$1.94M	0.00%
Penserra Capital Management LLC	25,063	$1.31M	0.03%
Crestline Management, LP	18,998	$995.3K	0.06%
Jefferies Financial Group Inc.	18,000	$943.0K	0.02%
Jump Financial, LLC	13,716	$718.6K	0.01%
Intech Investment Management LLC	12,386	$648.9K	0.01%
Caxton Associates LP	11,491	$602.0K	0.03%
Creative Planning	8,594	$450.2K	0.00%
Acadian Asset Management LLC	4,858	$254.0K	0.00%
Ameritas Advisory Services, LLC	4,416	$231.4K	0.01%
Mackenzie Financial Corp	4,343	$227.5K	0.00%
D. E. Shaw & Co., Inc.	4,294	$225.0K	0.00%
Prudential Financial Inc	4,259	$223.1K	0.00%
Campbell & CO Investment Adviser LLC	4,184	$219.2K	0.02%
E Fund Management Co., Ltd.	4,149	$217.4K	0.01%
Allianz Asset Management GmbH	4,100	$214.8K	0.00%
ORG Wealth Partners, LLC	1,206	$63.2K	0.02%
Truvestments Capital LLC	138	$7.23K	0.00%
Meeder Asset Management Inc	82	$4.30K	0.00%
Sterling Capital Management LLC	56	$2.93K	0.00%
Geneos Wealth Management Inc.	44	$2.31K	0.00%
Bessemer Group Inc	30	$2.00K	0.00%
Capital Performance Advisors LLP	16	$838	0.00%
Continuum Advisory, LLC	13	$777	0.00%

Sold out (19)

Institutions that held Rhythm Pharmaceuticals, Inc. at the end of Q2 2024 and filed for Q3 2024 without it.

Institutions that sold out of RYTM in Q3 2024
Institution	Shares, Q2 2024	Value, Q2 2024
Artisan Partners Limited Partnership	271,267	$11.1M
Rice Hall James & Associates, LLC	93,081	$3.82M
Caption Management, LLC	44,984	$1.85M
Atom Investors LP	26,629	$1.09M
Squarepoint Ops LLC	26,243	$1.08M
GTS Securities LLC	23,136	$950.0K
Parkwood LLC	16,387	$673.0K
ADAR1 Capital Management, LLC	13,000	$533.8K
Kennedy Capital Management, Inc.	11,154	$458.0K
Connor, Clark & Lunn Investment Management Ltd.	9,340	$383.5K
Toroso Investments, LLC	9,011	$370.0K
Omers Administration Corp	7,800	$320.3K
Group One Trading, L.P.	4,991	$204.9K
Allianz SE	1,350	$55.4K
ORG Partners LLC	1,206	$51.5K
Tucker Asset Management LLC	1,000	$41.1K
Pacer Advisors, Inc.	413	$17.0K
Mather Group, LLC.	65	$2.82K
Innealta Capital, LLC	7	$287

Not filed for Q3 2024 yet (1)

Institutions that held Rhythm Pharmaceuticals, Inc. at the end of Q2 2024 and haven't filed a 13F for Q3 2024. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding RYTM in Q2 2024 that haven't filed for Q3 2024
Institution	Shares, Q2 2024	Value, Q2 2024
BlackRock Inc.	6,741,923	$276.8M