Skip to main content

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
Marshall Wace, LLP178,757$3.80M0.02%––
Samsara BioCapital, LLC201,046$4.28M0.86%––
Altium Capital Management LP223,000$4.74M1.32%––
Charles Schwab Investment Management Inc252,222$5.37M0.00%––
Two Sigma Investments, LP294,660$6.27M0.02%––
Dimensional Fund Advisors LP308,573$6.57M0.00%––
Northern Trust Corp434,960$9.25M0.00%––
Rock Springs Capital Management LP599,280$12.7M0.28%––
Caas Capital Management LP617,595$13.1M0.40%––
Geode Capital Management, LLC623,562$13.3M0.00%––
Goldman Sachs Group Inc659,154$14.0M0.00%––
MPM Asset Management LLC909,258$19.3M3.74%––
Wellington Management Group LLP1,015,302$21.6M0.00%––
Gilder Gagnon Howe & Co LLC1,523,234$32.4M0.17%––
Deerfield Management Company, L.P. (Series C)1,989,625$42.3M0.89%––
Vanguard Group Inc2,252,395$47.9M0.00%––
State Street Corp2,441,380$51.9M0.00%––
Federated Hermes, Inc.3,110,853$66.2M0.13%––
BlackRock Inc.3,145,360$66.9M0.00%––
Baker Bros. Advisors LP3,479,873$74.0M0.32%––
Janus Henderson Group PLC4,088,023$87.0M0.04%––
Ra Capital Management, L.P.4,871,067$103.6M1.56%––
NEA Management Company, LLC4,912,306$104.5M2.36%––
Primecap Management Co6,005,593$127.7M0.09%––