What does CUSIP 76243J105 represent in this 13F holders report?

CUSIP 76243J105 is the security identifier for RYTM - RHYTHM PHARMACEUTICALS, INC. - Common Stock used to aggregate holder disclosures.

How many institutions held RYTM - RHYTHM PHARMACEUTICALS, INC. - Common Stock in Q1 2021?

119 institutional investors reported RYTM - RHYTHM PHARMACEUTICALS, INC. - Common Stock for Q1 2021. Use the holders table for investor-level position and value details.

RHYTHM PHARMACEUTICALS, INC. - Common Stock (RYTM)

CUSIP: 76243J105

Q1 2021 13F Holders as of 31 Mar 2021

Type / Class: Equity / Common Stock
Shares outstanding: 68,385,438
Total 13F shares: 47,577,014
Share change: +7,043,914
Total reported value: $1,011,965,096
Put/Call ratio: 200%
Price per share: $21.27
Number of holders: 119
Value change: +$147,271,703
Number of buys: 75
Number of sells: 42

Quarterly Holders Quick Answers

What is CUSIP 76243J105?
CUSIP 76243J105 identifies RYTM - RHYTHM PHARMACEUTICALS, INC. - Common Stock in SEC institutional holdings data.

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Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q2 2021
Previous quarter: Q4 2020

Recent filing periods for CUSIP 76243J105:

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

Top shareholders of RYTM - RHYTHM PHARMACEUTICALS, INC. - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
NEA Management Company, LLC	13F	Company	7.2%	4,912,306	$142,948,000	—	31 Dec 2020	13F
JANUS HENDERSON GROUP PLC	13F	Company	6.6%	4,491,765	$133,542,000	—	31 Dec 2020	13F
PRIMECAP MANAGEMENT CO/CA/	13F	Company	6.4%	4,342,491	$129,102,000	—	31 Dec 2020	13F
RA CAPITAL MANAGEMENT, L.P.	13F	Company	6.1%	4,179,067	$124,244,000	—	31 Dec 2020	13F
BlackRock Finance, Inc.	13F	Company	4%	2,731,106	$81,195,000	—	31 Dec 2020	13F
DEERFIELD MANAGEMENT COMPANY, L.P.	13F	Company	4%	2,721,203	$80,901,000	—	31 Dec 2020	13F
FEDERATED HERMES, INC.	13F	Company	3.8%	2,617,600	$77,821,000	—	31 Dec 2020	13F
BAKER BROS. ADVISORS LP	13F	Company	3.4%	2,314,873	$68,821,000	—	31 Dec 2020	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	3.1%	2,101,227	$62,469,000	—	31 Dec 2020	13F
MPM ASSET MANAGEMENT LLC	13F	Company	2.8%	1,909,258	$56,762,000	—	31 Dec 2020	13F
VANGUARD GROUP INC	13F	Company	2.8%	1,885,524	$56,056,000	—	31 Dec 2020	13F
STATE STREET CORP	13F	Company	1.9%	1,279,119	$38,028,000	—	31 Dec 2020	13F
Rock Springs Capital Management LP	13F	Company	0.72%	490,339	$14,578,000	—	31 Dec 2020	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.71%	488,447	$14,521,000	—	31 Dec 2020	13F
NORTHERN TRUST CORP	13F	Company	0.61%	418,922	$12,454,000	—	31 Dec 2020	13F
GILDER GAGNON HOWE & CO LLC	13F	Company	0.56%	385,532	$11,462,000	—	31 Dec 2020	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	0.5%	339,657	$10,098,000	—	31 Dec 2020	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.31%	208,873	$6,210,000	—	31 Dec 2020	13F
Samsara BioCapital, LLC	13F	Company	0.29%	201,046	$5,977,000	—	31 Dec 2020	13F
NORGES BANK	13F	Company	0.23%	159,428	$4,740,000	—	31 Dec 2020	13F
Nuveen Asset Management, LLC	13F	Company	0.2%	135,106	$4,017,000	—	31 Dec 2020	13F
Bank of New York Mellon Corp	13F	Company	0.19%	130,422	$3,878,000	—	31 Dec 2020	13F
Opaleye Management Inc.	13F	Company	0.17%	115,000	$3,419,000	—	31 Dec 2020	13F
SG Americas Securities, LLC	13F	Company	0.16%	110,688	$3,291,000	—	31 Dec 2020	13F
UBS Group AG	13F	Company	0.15%	101,151	$3,007,000	—	31 Dec 2020	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.13%	90,158	$2,680,000	—	31 Dec 2020	13F
JPMORGAN CHASE & CO	13F	Company	0.13%	88,260	$2,624,000	—	31 Dec 2020	13F
CITADEL ADVISORS LLC	13F	Company	0.11%	78,046	$2,320,000	—	31 Dec 2020	13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F	Company	0.11%	74,721	$2,221,000	—	31 Dec 2020	13F
Swiss National Bank	13F	Company	0.08%	55,000	$1,635,000	—	31 Dec 2020	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.08%	52,412	$1,558,000	—	31 Dec 2020	13F
SUSQUEHANNA INTERNATIONAL GROUP, LLP	13F	Company	0.08%	51,515	$1,532,000	—	31 Dec 2020	13F
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	13F	Company	0.07%	50,685	$1,507,000	—	31 Dec 2020	13F
Squarepoint Ops LLC	13F	Company	0.07%	50,341	$1,497,000	—	31 Dec 2020	13F
MORGAN STANLEY	13F	Company	0.07%	50,205	$1,493,000	—	31 Dec 2020	13F
RICE HALL JAMES & ASSOCIATES, LLC	13F	Company	0.07%	48,723	$1,449,000	—	31 Dec 2020	13F
STATE OF WISCONSIN INVESTMENT BOARD	13F	Company	0.07%	48,400	$1,439,000	—	31 Dec 2020	13F
AVIVA PLC	13F	Company	0.07%	48,218	$1,434,000	—	31 Dec 2020	13F
FMR LLC	13F	Company	0.07%	47,178	$1,403,000	—	31 Dec 2020	13F
CREDIT SUISSE AG/	13F	Company	0.06%	44,276	$1,317,000	—	31 Dec 2020	13F
Brandywine Global Investment Management, LLC	13F	Company	0.06%	43,567	$1,295,000	—	31 Dec 2020	13F
RHUMBLINE ADVISERS	13F	Company	0.06%	41,578	$1,236,000	—	31 Dec 2020	13F
ALLIANCEBERNSTEIN L.P.	13F	Company	0.06%	40,100	$1,192,000	—	31 Dec 2020	13F
BARCLAYS PLC	13F	Company	0.05%	34,756	$1,033,000	—	31 Dec 2020	13F
PARAMETRIC PORTFOLIO ASSOCIATES LLC	13F	Company	0.05%	33,876	$1,007,000	—	31 Dec 2020	13F
TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY	13F	Company	0.05%	31,979	$951,000	—	31 Dec 2020	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.05%	31,281	$930,000	—	31 Dec 2020	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	0.05%	31,005	$922,000	—	31 Dec 2020	13F
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	13F	Company	0.04%	29,126	$865,916	—	31 Dec 2020	13F
Aperio Group, LLC	13F	Company	0.04%	27,181	$808,000	—	31 Dec 2020	13F

Institutional Holders of RHYTHM PHARMACEUTICALS, INC. - Common Stock (RYTM) as of Q1 2021

As of 31 Mar 2021, RHYTHM PHARMACEUTICALS, INC. - Common Stock (RYTM) was held by 119 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 47,577,014 shares. The largest 10 holders included PRIMECAP MANAGEMENT CO/CA/, NEA Management Company, LLC, RA CAPITAL MANAGEMENT, L.P., JANUS HENDERSON GROUP PLC, BAKER BROS. ADVISORS LP, BlackRock Inc., FEDERATED HERMES, INC., STATE STREET CORP, VANGUARD GROUP INC, and DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C). This page lists 119 institutional shareholders reporting positions in this security for the Q1 2021 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2021 vs Q4 2020 Across Filers

Q4 2020 holders

114

Q1 2021 holders

119

Holder diff

Investor	Q4 2020 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q4 2020 Value $	Q1 2021 Value $	Value Diff $	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.