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Rhythm Pharmaceuticals, Inc.

RYTM
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001649904

In the last 90 days, Rhythm Pharmaceuticals, Inc. insiders filed 0 open-market purchases and 6 sales; 304 institutions reported holding it in 13F filings for Q2 2026, worth $8.55B in total; Duquesne Family Office is the only superinvestor holding it.

13F holders, Q1 2021

Institutional positions in Rhythm Pharmaceuticals, Inc. as of Mar 31, 2021. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
124
No complete 13F data for Q4 2020
Shares held
47.6M
No complete 13F data for Q4 2020
Total value
$1.01B
No complete 13F data for Q4 2020

Holders and value by quarter

Institutions reporting RYTM on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2021: 124 institutions
Q1 2021: 124 institutionsQ2 2021: 105 institutionsQ3 2021: 97 institutionsQ4 2021: 98 institutionsQ1 2022: 111 institutionsQ2 2022: 90 institutionsQ3 2022: 101 institutionsQ4 2022: 115 institutionsQ1 2023: 126 institutionsQ2 2023: 116 institutionsQ3 2023: 144 institutionsQ4 2023: 169 institutionsQ1 2024: 167 institutionsQ2 2024: 165 institutionsQ3 2024: 176 institutionsQ4 2024: 203 institutionsQ1 2025: 228 institutionsQ2 2025: 227 institutionsQ3 2025: 264 institutionsQ4 2025: 281 institutionsQ1 2026: 285 institutionsQ2 2026: 304 institutions
Value heldQ1 2021: $1.01B
Q1 2021: $1.01BQ2 2021: $905.6MQ3 2021: $626.3MQ4 2021: $483.6MQ1 2022: $562.7MQ2 2022: $190.8MQ3 2022: $1.45BQ4 2022: $1.81BQ1 2023: $1.08BQ2 2023: $1.09BQ3 2023: $1.56BQ4 2023: $3.07BQ1 2024: $2.95BQ2 2024: $2.85BQ3 2024: $3.55BQ4 2024: $3.63BQ1 2025: $3.44BQ2 2025: $4.20BQ3 2025: $7.20BQ4 2025: $7.80BQ1 2026: $6.42BQ2 2026: $8.55B
Institutions holding RYTM and their total value by quarter
QuarterHoldersValue
Q2 2026304$8.55B
Q1 2026285$6.42B
Q4 2025281$7.80B
Q3 2025264$7.20B
Q2 2025227$4.20B
Q1 2025228$3.44B
Q4 2024203$3.63B
Q3 2024176$3.55B
Q2 2024165$2.85B
Q1 2024167$2.95B
Q4 2023169$3.07B
Q3 2023144$1.56B
Q2 2023116$1.09B
Q1 2023126$1.08B
Q4 2022115$1.81B
Q3 2022101$1.45B
Q2 202290$190.8M
Q1 2022111$562.7M
Q4 202198$483.6M
Q3 202197$626.3M
Q2 2021105$905.6M
Q1 2021124$1.01B

Institutions, Q1 2021

Shares, value and share of portfolio for each institution holding Rhythm Pharmaceuticals, Inc..

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.

Institutions holding RYTM in Q1 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Primecap Management Co6,005,593$127.7M0.09%––
NEA Management Company, LLC4,912,306$104.5M2.36%––
Ra Capital Management, L.P.4,871,067$103.6M1.56%––
Janus Henderson Group PLC4,088,023$87.0M0.04%––
Baker Bros. Advisors LP3,479,873$74.0M0.32%––
BlackRock Inc.3,145,360$66.9M0.00%––
Federated Hermes, Inc.3,110,853$66.2M0.13%––
State Street Corp2,441,380$51.9M0.00%––
Vanguard Group Inc2,252,395$47.9M0.00%––
Deerfield Management Company, L.P. (Series C)1,989,625$42.3M0.89%––
Gilder Gagnon Howe & Co LLC1,523,234$32.4M0.17%––
Wellington Management Group LLP1,015,302$21.6M0.00%––
MPM Asset Management LLC909,258$19.3M3.74%––
Goldman Sachs Group Inc659,154$14.0M0.00%––
Geode Capital Management, LLC623,562$13.3M0.00%––
Caas Capital Management LP617,595$13.1M0.40%––
Rock Springs Capital Management LP599,280$12.7M0.28%––
Northern Trust Corp434,960$9.25M0.00%––
Dimensional Fund Advisors LP308,573$6.57M0.00%––
Two Sigma Investments, LP294,660$6.27M0.02%––
Charles Schwab Investment Management Inc252,222$5.37M0.00%––
Altium Capital Management LP223,000$4.74M1.32%––
Samsara BioCapital, LLC201,046$4.28M0.86%––
Marshall Wace, LLP178,757$3.80M0.02%––
Millennium Management LLC170,527$3.63M0.01%––
Marshall Wace North America L.P.169,156$3.60M0.01%––
Nuveen Asset Management, LLC153,269$3.26M0.00%––
Citigroup Inc152,428$3.24M0.00%––
Bank of New York Mellon Corp136,154$2.90M0.00%––
UBS Group AG126,850$2.70M0.00%––
Susquehanna International Group, LLP123,737$2.63M0.00%––
Rafferty Asset Management, LLC121,667$2.59M0.02%––
Citadel Advisors LLC118,708$2.52M0.00%––
Stifel Financial Corp117,233$2.49M0.00%––
Bank of America Corp106,442$2.26M0.00%––
Morgan Stanley100,849$2.15M0.00%––
SG Americas Securities, LLC86,784$1.85M0.01%––
FMR LLC83,278$1.77M0.00%––
JPMorgan Chase & Co79,825$1.70M0.00%––
Swiss National Bank78,700$1.67M0.00%––
Barclays PLC74,283$1.58M0.00%––
Alyeska Investment Group, L.P.73,957$1.57M0.02%––
Squarepoint Ops LLC71,544$1.52M0.01%––
California Public Employees Retirement System68,400$1.46M0.00%––
Tudor Investment Corp Et Al66,852$1.42M0.03%––
Norges Bank65,108$1.39M0.00%––
Rice Hall James & Associates, LLC64,261$1.37M0.04%––
California State Teachers Retirement System57,485$1.22M0.00%––
Renaissance Technologies LLC49,000$1.04M0.00%––
State of Wisconsin Investment Board48,400$1.03M0.00%––
Two Sigma Advisers, LP47,800$1.02M0.00%––
Brandywine Global Investment Management, LLC43,263$920.0K0.01%––
Parametric Portfolio Associates LLC42,555$905.0K0.00%––
Alliancebernstein L.P.41,600$885.0K0.00%––
Ensign Peak Advisors, Inc40,891$870.0K0.00%––
Rhumbline Advisers40,155$854.0K0.00%––
Deutsche Bank AG39,229$834.0K0.00%––
New York State Common Retirement Fund35,005$745.0K0.00%––
Engineers Gate Manager LP32,710$696.0K0.03%––
Hennion & Walsh Asset Management, Inc.31,688$674.0K0.04%––
D. E. Shaw & Co., Inc.31,653$673.0K0.00%––
Qube Research & Technologies Ltd26,676$567.0K0.01%––
Credit Suisse AG25,456$541.0K0.00%––
HighVista Strategies LLC24,809$528.0K0.39%––
HighTower Advisors, LLC24,053$512.0K0.00%––
American International Group, Inc.22,212$472.0K0.00%––
Manufacturers Life Insurance Company, The22,022$468.0K0.00%––
Wells Fargo & Company21,063$448.0K0.00%––
Invesco Ltd.17,207$366.0K0.00%––
ProShare Advisors LLC16,996$362.0K0.00%––
Voya Investment Management LLC16,031$341.0K0.00%––
Price T Rowe Associates Inc15,465$329.0K0.00%––
MetLife Investment Management15,372$327.0K0.00%––
BNP Paribas Arbitrage, SA14,734$313.4K0.00%––
PRW Wealth Management LLC14,200$302.0K0.15%––
Bridgefront Capital, LLC12,725$271.0K0.08%––
Jane Street Group, LLC11,770$251.0K0.00%––
Trexquant Investment LP11,535$245.0K0.02%––
DekaBank Deutsche Girozentrale12,000$243.0K0.00%––
UBS Asset Management Americas Inc10,496$223.3K0.00%––
Arizona State Retirement System10,027$213.0K0.00%––
Virtus ETF Advisers LLC9,939$211.0K0.09%––
Principal Financial Group Inc9,802$208.0K0.00%––
Metropolitan Life Insurance Co9,615$204.5K0.00%––
Cutler Group LP8,202$174.0K0.01%––
Legal & General Group Plc6,456$137.0K0.00%––
1623 Capital LLC5,756$122.0K0.06%––
Zurcher Kantonalbank (Zurich Cantonalbank)5,502$117.0K0.00%––
Exane Derivatives5,167$109.9K0.03%––
Simplex Trading, LLC4,716$100.0K0.01%––
Royal Bank of Canada3,815$81.0K0.00%––
Retirement Group, LLC3,812$81.0K0.04%––
Sierra Capital LLC3,600$77.0K0.01%––
Group One Trading, L.P.2,996$64.0K0.00%––
Ameritas Investment Partners, Inc.2,970$63.0K0.00%––
Pacer Advisors, Inc.2,845$61.0K0.00%––
Bank of Montreal2,464$53.0K0.00%––
Great West Life Assurance Co2,363$50.0K0.00%––
Tower Research Capital LLC (TRC)2,274$48.0K0.00%––
HM Payson & Co1,701$36.0K0.00%––