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, Q3 2023
Institutional positions in Rhythm Pharmaceuticals, Inc. as of Sep 30, 2023. 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
- 144
- +28 vs. Q2 2023
- Shares held
- 68.1M
- +1.92M (+2.9%) vs. Q2 2023
- Total value
- $1.56B
- +$470.0M (+43.0%) vs. Q2 2023
- New holders
- 40
- 48 more added
- Sold out
- 12
- 39 more reduced
Compare with Q2 2023: new holders, sold out and not filed yet
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.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 304 | $8.55B |
| Q1 2026 | 285 | $6.42B |
| Q4 2025 | 281 | $7.80B |
| Q3 2025 | 264 | $7.20B |
| Q2 2025 | 227 | $4.20B |
| Q1 2025 | 228 | $3.44B |
| Q4 2024 | 203 | $3.63B |
| Q3 2024 | 176 | $3.55B |
| Q2 2024 | 165 | $2.85B |
| Q1 2024 | 167 | $2.95B |
| Q4 2023 | 169 | $3.07B |
| Q3 2023 | 144 | $1.56B |
| Q2 2023 | 116 | $1.09B |
| Q1 2023 | 126 | $1.08B |
| Q4 2022 | 115 | $1.81B |
| Q3 2022 | 101 | $1.45B |
| Q2 2022 | 90 | $190.8M |
| Q1 2022 | 111 | $562.7M |
| Q4 2021 | 98 | $483.6M |
| Q3 2021 | 97 | $626.3M |
| Q2 2021 | 105 | $905.6M |
| Q1 2021 | 124 | $1.01B |
Institutions, Q3 2023
Shares, value and share of portfolio for each institution holding Rhythm Pharmaceuticals, Inc.; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Wellington Management Group LLP | 137,443 | $3.15M | 0.00% | −2,778−2.0% | Reduced |
| Nuveen Asset Management, LLC | 141,585 | $3.25M | 0.00% | −56,858−28.7% | Reduced |
| Jane Street Group, LLC | 144,002 | $3.30M | 0.01% | +67,978+89.4% | Added |
| ExodusPoint Capital Management, LP | 152,443 | $3.50M | 0.04% | +136,762+872.2% | Added |
| Rice Hall James & Associates, LLC | 157,426 | $3.61M | 0.23% | −1,533−1.0% | Reduced |
| Rafferty Asset Management, LLC | 162,804 | $3.73M | 0.02% | −96,540−37.2% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 177,000 | $4.06M | 0.02% | +177,000 | New |
| Bank of New York Mellon Corp | 177,376 | $4.07M | 0.00% | −10,420−5.5% | Reduced |
| Clearbridge Investments, LLC | 182,825 | $4.19M | 0.00% | +182,825 | New |
| Hudson Bay Capital Management LP | 207,500 | $4.76M | 0.05% | +207,500 | New |
| Price T Rowe Associates Inc | 210,352 | $4.82M | 0.00% | −12,885−5.8% | Reduced |
| Barclays PLC | 241,261 | $5.53M | 0.00% | +111,033+85.3% | Added |
| Citadel Advisors LLC | 255,433 | $5.86M | 0.01% | +65,901+34.8% | Added |
| Silverarc Capital Management, LLC | 260,537 | $5.97M | 2.23% | +144,369+124.3% | Added |
| Driehaus Capital Management LLC | 274,524 | $6.29M | 0.08% | +251,531+1,093.9% | Added |
| UBS Asset Management Americas Inc | 337,264 | $7.73M | 0.00% | +131,229+63.7% | Added |
| Samsara BioCapital, LLC | 345,293 | $7.92M | 2.42% | 00.0% | Unchanged |
| Perceptive Advisors LLC | 380,828 | $8.73M | 0.29% | +380,828 | New |
| Charles Schwab Investment Management Inc | 384,748 | $8.82M | 0.00% | +34,189+9.8% | Added |
| Logos Global Management LP | 400,000 | $9.17M | 1.31% | +400,000 | New |
| Assenagon Asset Management S.A. | 407,290 | $9.34M | 0.03% | −135,920−25.0% | Reduced |
| Morgan Stanley | 436,408 | $10.0M | 0.00% | +333,227+323.0% | Added |
| Northern Trust Corp | 504,022 | $11.6M | 0.00% | +9,820+2.0% | Added |
| OrbiMed Advisors LLC | 583,642 | $13.4M | 0.31% | +583,642 | New |
| Opaleye Management Inc. | 653,000 | $15.0M | 4.92% | −82,000−11.2% | Reduced |
| Cormorant Asset Management, LP | 850,000 | $19.5M | 1.14% | +250,000+41.7% | Added |
| FMR LLC | 868,474 | $19.9M | 0.00% | +166,940+23.8% | Added |
| Geode Capital Management, LLC | 1,045,057 | $24.0M | 0.00% | +71,707+7.4% | Added |
| Janus Henderson Group PLC | 1,065,745 | $24.4M | 0.02% | −12,462−1.2% | Reduced |
| VR Adviser, LLC | 1,090,000 | $25.0M | 2.63% | 00.0% | Unchanged |
| Rock Springs Capital Management LP | 1,597,123 | $36.6M | 0.98% | 00.0% | Unchanged |
| Alkeon Capital Management LLC | 1,725,167 | $39.5M | 0.25% | 00.0% | Unchanged |
| Commodore Capital LP | 2,075,000 | $47.6M | 5.56% | +2,075,000 | New |
| Federated Hermes, Inc. | 2,341,335 | $53.7M | 0.14% | −1,550,348−39.8% | Reduced |
| State Street Corp | 2,365,856 | $54.2M | 0.00% | −901,569−27.6% | Reduced |
| Frazier Life Sciences Management, L.P. | 2,371,304 | $54.4M | 3.61% | +204,082+9.4% | Added |
| Polar Capital Holdings Plc | 2,500,000 | $57.3M | 0.43% | +250,000+11.1% | Added |
| NEA Management Company, LLC | 2,909,956 | $66.7M | 5.15% | 00.0% | Unchanged |
| Vanguard Group Inc | 3,014,568 | $69.1M | 0.00% | +85,139+2.9% | Added |
| Goldman Sachs Group Inc | 5,160,541 | $118.3M | 0.03% | −25,472−0.5% | Reduced |
| Ra Capital Management, L.P. | 5,676,067 | $130.1M | 2.56% | 00.0% | Unchanged |
| BlackRock Inc. | 6,199,882 | $142.1M | 0.00% | −65,123−1.0% | Reduced |
| Baker Bros. Advisors LP | 6,702,349 | $153.7M | 0.89% | +204,082+3.1% | Added |
| Primecap Management Co | 8,267,421 | $189.5M | 0.16% | −31,896−0.4% | Reduced |
| Braidwell LP | 0 | $0 | 0.00% | −843,087−100.0% | Sold out |
| Great Point Partners LLC | 0 | $0 | 0.00% | −772,000−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −395,541−100.0% | Sold out |
| Kynam Capital Management, LP | 0 | $0 | 0.00% | −92,602−100.0% | Sold out |
| Soleus Capital Management, L.P. | 0 | $0 | 0.00% | −38,600−100.0% | Sold out |
| Utah Retirement Systems | 0 | $0 | 0.00% | −28,197−100.0% | Sold out |
| Walleye Trading LLC | 0 | $0 | 0.00% | −25,395−100.0% | Sold out |
| E Fund Management Co., Ltd. | 0 | $0 | 0.00% | −13,948−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −13,188−100.0% | Sold out |
| HarbourVest Partners LLC | 0 | $0 | 0.00% | −5,639−100.0% | Sold out |
| Russell Investments Group, Ltd. | 0 | $0 | 0.00% | −1,100−100.0% | Sold out |
| Beaird Harris Wealth Management, LLC | 0 | $0 | 0.00% | −49−100.0% | Sold out |