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 Q4 2018?

73 institutional investors reported RYTM - RHYTHM PHARMACEUTICALS, INC. - Common Stock for Q4 2018. Use the holders table for investor-level position and value details.

RHYTHM PHARMACEUTICALS, INC. - Common Stock (RYTM)

CUSIP: 76243J105

Q4 2018 13F Holders as of 31 Dec 2018

Type / Class: Equity / Common Stock
Shares outstanding: 68,385,438
Total 13F shares: 31,656,641
Share change: +514,202
Total reported value: $850,986,460
Price per share: $26.88
Number of holders: 73
Value change: +$12,828,367
Number of buys: 40
Number of sells: 34

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

Newer quarter: Q1 2019
Previous quarter: Q3 2018

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	$143,292,000	—	30 Sep 2018	13F
MPM ASSET MANAGEMENT LLC	13F	Company	4.5%	3,074,893	$89,695,000	—	30 Sep 2018	13F
JANUS HENDERSON GROUP PLC	13F	Company	4.5%	3,050,838	$88,993,000	—	30 Sep 2018	13F
TRV GP, LLC	13F	Company	4.4%	2,981,437	$86,969,000	—	30 Sep 2018	13F
BAKER BROS. ADVISORS LP	13F	Company	4%	2,708,200	$78,998,000	—	30 Sep 2018	13F
RA CAPITAL MANAGEMENT, L.P.	13F	Company	2.9%	1,950,332	$56,891,000	—	30 Sep 2018	13F
FMR LLC	13F	Company	2.4%	1,624,794	$47,395,000	—	30 Sep 2018	13F
BlackRock Finance, Inc.	13F	Company	1.7%	1,141,503	$33,297,000	—	30 Sep 2018	13F
VANGUARD GROUP INC	13F	Company	1.5%	1,048,186	$30,575,000	—	30 Sep 2018	13F
ORBIMED ADVISORS LLC	13F	Company	1.5%	1,041,353	$30,376,000	—	30 Sep 2018	13F
FEDERATED HERMES, INC.	13F	Company	1.2%	790,421	$23,057,000	—	30 Sep 2018	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	1.2%	790,015	$23,045,000	—	30 Sep 2018	13F
Foresite Capital Management IV, LLC	13F	Company	1%	696,903	$20,329,000	—	30 Sep 2018	13F
STATE STREET CORP	13F	Company	1%	684,072	$19,954,000	—	30 Sep 2018	13F
PERCEPTIVE ADVISORS LLC	13F	Company	0.97%	664,186	$19,374,000	—	30 Sep 2018	13F
TimesSquare Capital Management, LLC	13F	Company	0.97%	663,585	$19,357,000	—	30 Sep 2018	13F
ArrowMark Colorado Holdings LLC	13F	Company	0.71%	488,943	$14,262,000	—	30 Sep 2018	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	0.54%	368,290	$10,743,000	—	30 Sep 2018	13F
DEERFIELD MANAGEMENT COMPANY, L.P.	13F	Company	0.53%	365,689	$10,667,000	—	30 Sep 2018	13F
Rock Springs Capital Management LP	13F	Company	0.31%	215,000	$6,272,000	—	30 Sep 2018	13F
NORTHERN TRUST CORP	13F	Company	0.31%	211,794	$6,178,000	—	30 Sep 2018	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.26%	179,647	$5,240,000	—	30 Sep 2018	13F
Sofinnova Investments, Inc.	13F	Company	0.23%	159,302	$4,646,000	—	30 Sep 2018	13F
JPMORGAN CHASE & CO	13F	Company	0.19%	129,354	$3,774,000	—	30 Sep 2018	13F
DEUTSCHE BANK AG\	13F	Company	0.17%	114,553	$3,341,000	—	30 Sep 2018	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.15%	105,793	$3,086,000	—	30 Sep 2018	13F
ALPS ADVISORS INC	13F	Company	0.09%	60,476	$1,764,000	—	30 Sep 2018	13F
Bank of New York Mellon Corp	13F	Company	0.09%	60,274	$1,759,000	—	30 Sep 2018	13F
Man Group plc	13F	Company	0.08%	56,360	$1,644,000	—	30 Sep 2018	13F
Greylock XII GP LLC	13F	Company	0.08%	54,749	$1,597,000	—	30 Sep 2018	13F
D. E. Shaw & Co., Inc.	13F	Company	0.08%	52,161	$1,522,000	—	30 Sep 2018	13F
Trustees of Princeton University	13F	Company	0.07%	47,643	$1,390,000	—	30 Sep 2018	13F
Schonfeld Strategic Advisors LLC	13F	Company	0.07%	47,100	$1,374,000	—	30 Sep 2018	13F
Russell Investments Group, Ltd.	13F	Company	0.06%	37,660	$1,099,000	—	30 Sep 2018	13F
PARAMETRIC PORTFOLIO ASSOCIATES LLC	13F	Company	0.05%	33,945	$990,000	—	30 Sep 2018	13F
Squarepoint Ops LLC	13F	Company	0.05%	32,763	$956,000	—	30 Sep 2018	13F
Clearbridge Investments, LLC	13F	Company	0.05%	30,807	$899,000	—	30 Sep 2018	13F
Swiss National Bank	13F	Company	0.04%	28,600	$834,000	—	30 Sep 2018	13F
TEACHERS ADVISORS, LLC	13F	Company	0.04%	27,766	$810,000	—	30 Sep 2018	13F
CITIGROUP INC	13F	Company	0.04%	27,434	$801,000	—	30 Sep 2018	13F
MORGAN STANLEY	13F	Company	0.04%	26,652	$777,000	—	30 Sep 2018	13F
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F	Company	0.04%	25,000	$729,000	—	30 Sep 2018	13F
Tekla Capital Management LLC	13F	Company	0.04%	24,890	$726,000	—	30 Sep 2018	13F
TIAA CREF INVESTMENT MANAGEMENT LLC	13F	Company	0.04%	23,946	$699,000	—	30 Sep 2018	13F
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	13F	Company	0.03%	23,158	$676,000	—	30 Sep 2018	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.03%	19,194	$560,000	—	30 Sep 2018	13F
PDT Partners, LLC	13F	Company	0.03%	17,207	$502,000	—	30 Sep 2018	13F
CREDIT SUISSE AG/	13F	Company	0.02%	15,950	$466,000	—	30 Sep 2018	13F
TD ASSET MANAGEMENT INC	13F	Company	0.02%	14,562	$425,000	—	30 Sep 2018	13F
VIRTUS ADVISERS, LLC	13F	Company	0.02%	14,044	$410,000	—	30 Sep 2018	13F

Institutional Holders of RHYTHM PHARMACEUTICALS, INC. - Common Stock (RYTM) as of Q4 2018

As of 31 Dec 2018, RHYTHM PHARMACEUTICALS, INC. - Common Stock (RYTM) was held by 73 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 31,656,641 shares. The largest 10 holders included NEA Management Company, LLC, JANUS HENDERSON GROUP PLC, MPM ASSET MANAGEMENT LLC, TRV GP, LLC, BAKER BROS. ADVISORS LP, RA CAPITAL MANAGEMENT, LLC, FMR LLC, BlackRock Inc., Vanguard Group Inc, and ORBIMED ADVISORS LLC. This page lists 73 institutional shareholders reporting positions in this security for the Q4 2018 filing period.

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

Compare Q4 2018 vs Q3 2018 Across Filers

Q3 2018 holders

Q4 2018 holders

Holder diff

-4

Investor	Q3 2018 Shares	Q4 2018 Shares	Share Diff	Share Chg %	Q3 2018 Value $	Q4 2018 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.