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 2023
Institutional positions in Rhythm Pharmaceuticals, Inc. as of Mar 31, 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
- 126
- +11 vs. Q4 2022
- Shares held
- 60.3M
- −1.98M (−3.2%) vs. Q4 2022
- Total value
- $1.08B
- −$738.2M (−40.7%) vs. Q4 2022
- New holders
- 29
- 46 more added
- Sold out
- 18
- 24 more reduced
Compare with Q4 2022: 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, Q1 2023
Shares, value and share of portfolio for each institution holding Rhythm Pharmaceuticals, Inc.; share changes are against Q4 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Primecap Management Co | 7,607,311 | $135.7M | 0.12% | +696,169+10.1% | Added |
| Baker Bros. Advisors LP | 6,498,267 | $115.9M | 0.63% | +143,659+2.3% | Added |
| Ra Capital Management, L.P. | 5,516,067 | $98.4M | 2.23% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 5,310,703 | $94.7M | 0.03% | +108,911+2.1% | Added |
| Federated Hermes, Inc. | 3,891,683 | $69.4M | 0.17% | −2,412,799−38.3% | Reduced |
| BlackRock Inc. | 3,780,599 | $67.4M | 0.00% | +56,885+1.5% | Added |
| NEA Management Company, LLC | 2,909,956 | $51.9M | 3.59% | −2,000,000−40.7% | Reduced |
| Vanguard Group Inc | 2,648,136 | $47.2M | 0.00% | +51,822+2.0% | Added |
| State Street Corp | 2,612,188 | $46.6M | 0.00% | −568,510−17.9% | Reduced |
| Frazier Life Sciences Management, L.P. | 2,164,739 | $38.6M | 2.80% | +270,739+14.3% | Added |
| Alkeon Capital Management LLC | 2,015,966 | $36.0M | 0.23% | −222,296−9.9% | Reduced |
| Polar Capital Holdings Plc | 1,750,000 | $31.2M | 0.23% | +500,000+40.0% | Added |
| Rock Springs Capital Management LP | 1,597,123 | $28.5M | 0.68% | −163,742−9.3% | Reduced |
| Janus Henderson Group PLC | 1,097,573 | $19.6M | 0.01% | −142,580−11.5% | Reduced |
| Susquehanna International Group, LLP | 784,555 | $14.0M | 0.02% | +90,513+13.0% | Added |
| Opaleye Management Inc. | 735,000 | $13.1M | 3.93% | 00.0% | Unchanged |
| FMR LLC | 698,824 | $12.5M | 0.00% | −74,204−9.6% | Reduced |
| Assenagon Asset Management S.A. | 664,026 | $11.8M | 0.05% | +200,510+43.3% | Added |
| Millennium Management LLC | 546,906 | $9.76M | 0.01% | +504,608+1,193.0% | Added |
| Geode Capital Management, LLC | 472,761 | $8.43M | 0.00% | +14,251+3.1% | Added |
| Citadel Advisors LLC | 365,040 | $6.51M | 0.01% | +294,342+416.3% | Added |
| Bank of America Corp | 359,666 | $6.42M | 0.00% | +93,513+35.1% | Added |
| Jane Street Group, LLC | 349,639 | $6.24M | 0.01% | +150,136+75.3% | Added |
| Samsara BioCapital, LLC | 345,293 | $6.16M | 1.27% | 00.0% | Unchanged |
| Citigroup Inc | 339,955 | $6.06M | 0.01% | +64,394+23.4% | Added |
| Qube Research & Technologies Ltd | 291,314 | $5.20M | 0.03% | +110,757+61.3% | Added |
| Cubist Systematic Strategies, LLC | 278,758 | $4.97M | 0.05% | +262,250+1,588.6% | Added |
| D. E. Shaw & Co., Inc. | 278,203 | $4.96M | 0.01% | −77,327−21.7% | Reduced |
| Rafferty Asset Management, LLC | 255,210 | $4.55M | 0.03% | −50,803−16.6% | Reduced |
| Charles Schwab Investment Management Inc | 228,037 | $4.07M | 0.00% | −1,879−0.8% | Reduced |
| HRT Financial LP | 218,445 | $3.90M | 0.05% | +218,445 | New |
| Morgan Stanley | 216,621 | $3.86M | 0.00% | −27,064−11.1% | Reduced |
| UBS Asset Management Americas Inc | 206,035 | $3.68M | 0.00% | +163,838+388.3% | Added |
| Voloridge Investment Management, LLC | 193,590 | $3.45M | 0.02% | −1,406−0.7% | Reduced |
| Price T Rowe Associates Inc | 171,580 | $3.06M | 0.00% | +157,380+1,108.3% | Added |
| Rice Hall James & Associates, LLC | 153,786 | $2.74M | 0.16% | +584+0.4% | Added |
| Northern Trust Corp | 142,137 | $2.54M | 0.00% | +4,036+2.9% | Added |
| Walleye Capital LLC | 137,769 | $2.46M | 0.05% | +137,769 | New |
| Dimensional Fund Advisors LP | 124,509 | $2.22M | 0.00% | −12,482−9.1% | Reduced |
| Wellington Management Group LLP | 111,633 | $1.99M | 0.00% | +4,717+4.4% | Added |
| Squarepoint Ops LLC | 105,975 | $1.89M | 0.01% | +40,837+62.7% | Added |
| Great Point Partners LLC | 97,544 | $1.74M | 0.34% | +97,544 | New |
| Swiss National Bank | 97,300 | $1.74M | 0.00% | −600−0.6% | Reduced |
| Marshall Wace, LLP | 93,846 | $1.67M | 0.00% | +72,563+340.9% | Added |
| Kynam Capital Management, LP | 92,602 | $1.65M | 0.21% | +92,602 | New |
| Barclays PLC | 87,118 | $1.55M | 0.00% | −95,481−52.3% | Reduced |
| BNP Paribas Arbitrage, SA | 87,042 | $1.55M | 0.00% | +34,158+64.6% | Added |
| UBS Group AG | 84,077 | $1.50M | 0.00% | −107,188−56.0% | Reduced |
| Verition Fund Management LLC | 77,228 | $1.38M | 0.02% | +77,228 | New |
| Voya Investment Management LLC | 63,595 | $1.13M | 0.00% | 00.0% | Unchanged |
| Hennion & Walsh Asset Management, Inc. | 57,335 | $1.02M | 0.06% | −1,963−3.3% | Reduced |
| UBS Oconnor LLC | 56,050 | $999.9K | 0.02% | +56,050 | New |
| Credit Suisse AG | 55,291 | $986.4K | 0.00% | +7,879+16.6% | Added |
| Stratos Wealth Partners, LTD. | 54,084 | $964.9K | 0.03% | −19,236−26.2% | Reduced |
| ExodusPoint Capital Management, LP | 53,658 | $957.0K | 0.01% | +53,658 | New |
| California State Teachers Retirement System | 52,422 | $935.2K | 0.00% | +17,116+48.5% | Added |
| Wells Fargo & Company | 50,803 | $906.3K | 0.00% | +44,060+653.4% | Added |
| Nuveen Asset Management, LLC | 49,404 | $881.0K | 0.00% | +1,913+4.0% | Added |
| Profund Advisors LLC | 46,375 | $827.3K | 0.05% | +46,375 | New |
| LMR Partners LLP | 43,114 | $769.2K | 0.02% | +18,070+72.2% | Added |
| Twinbeech Capital LP | 42,130 | $751.6K | 0.02% | +42,130 | New |
| State of Wisconsin Investment Board | 41,611 | $742.3K | 0.00% | +853+2.1% | Added |
| Fox Run Management, L.L.C. | 37,950 | $677.0K | 0.22% | +37,950 | New |
| Alps Advisors Inc | 37,388 | $667.0K | 0.01% | −810−2.1% | Reduced |
| HighVista Strategies LLC | 35,478 | $632.9K | 0.52% | 00.0% | Unchanged |
| Jupiter Asset Management Ltd | 34,899 | $622.6K | 0.01% | +1,539+4.6% | Added |
| Nan Fung Group Holdings Ltd | 32,520 | $580.2K | 0.39% | 00.0% | Unchanged |
| Landscape Capital Management, L.L.C. | 30,810 | $549.6K | 0.07% | +3,678+13.6% | Added |
| Mirabella Financial Services LLP | 29,500 | $526.3K | 0.11% | +18,011+156.8% | Added |
| DekaBank Deutsche Girozentrale | 30,000 | $525.0K | 0.00% | 00.0% | Unchanged |
| Utah Retirement Systems | 28,197 | $503.0K | 0.01% | +28,197 | New |
| Bank of New York Mellon Corp | 26,726 | $476.8K | 0.00% | −5,557−17.2% | Reduced |
| Tudor Investment Corp Et Al | 25,874 | $462.0K | 0.01% | +25,874 | New |
| Driehaus Capital Management LLC | 22,993 | $410.2K | 0.01% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 22,285 | $398.0K | 0.00% | +2,644+13.5% | Added |
| Stifel Financial Corp | 21,490 | $383.4K | 0.00% | +2,110+10.9% | Added |
| Diametric Capital, LP | 20,880 | $372.5K | 0.18% | +20,880 | New |
| Fiduciary Trust Co | 20,000 | $356.8K | 0.01% | 00.0% | Unchanged |
| Parkwood LLC | 19,147 | $342.0K | 0.06% | +1,601+9.1% | Added |
| Ameriprise Financial Inc | 18,140 | $323.6K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 17,213 | $307.0K | 0.01% | +3,463+25.2% | Added |
| Legal & General Group Plc | 17,119 | $305.4K | 0.00% | +2,323+15.7% | Added |
| Balyasny Asset Management LLC | 16,313 | $291.0K | 0.00% | +15,547+2,029.6% | Added |
| E Fund Management Co., Ltd. | 14,484 | $258.0K | 0.02% | −1,572−9.8% | Reduced |
| ClariVest Asset Management LLC | 14,360 | $256.0K | 0.01% | −2,140−13.0% | Reduced |
| STRS Ohio | 14,099 | $251.0K | 0.00% | +14,099 | New |
| Teacher Retirement System of Texas | 13,887 | $248.0K | 0.00% | +1,853+15.4% | Added |
| Schonfeld Strategic Advisors LLC | 13,311 | $237.5K | 0.00% | −107,378−89.0% | Reduced |
| Arizona State Retirement System | 13,061 | $233.0K | 0.00% | +1,612+14.1% | Added |
| Point72 Asset Management, L.P. | 11,955 | $213.3K | 0.00% | +11,955 | New |
| Allianz Asset Management GmbH | 11,900 | $212.3K | 0.00% | 00.0% | Unchanged |
| Jump Financial, LLC | 11,618 | $207.3K | 0.01% | +11,618 | New |
| Ergoteles LLC | 11,563 | $206.3K | 0.01% | +11,563 | New |
| Mirae Asset Global Investments Co., Ltd. | 11,056 | $197.2K | 0.00% | +11,056 | New |
| Jefferies Financial Group Inc. | 10,773 | $192.2K | 0.00% | +10,773 | New |
| Boulder Hill Capital Management LP | 10,600 | $189.1K | 0.15% | +10,600 | New |
| Virtus ETF Advisers LLC | 10,404 | $185.6K | 0.10% | +183+1.8% | Added |
| Point72 Middle East FZE | 10,339 | $184.4K | 0.01% | +10,339 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 9,108 | $162.5K | 0.00% | +2,229+32.4% | Added |
| Public Employees Retirement Association of Colorado | 7,985 | $142.0K | 0.00% | +7,985 | New |