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; 305 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 2024
Institutional positions in Rhythm Pharmaceuticals, Inc. as of Mar 31, 2024. 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
- 167
- −2 vs. Q4 2023
- Shares held
- 68.0M
- +1.33M (+2.0%) vs. Q4 2023
- Total value
- $2.95B
- −$119.7M (−3.9%) vs. Q4 2023
- New holders
- 25
- 63 more added
- Sold out
- 27
- 54 more reduced
Compare with Q4 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 | 305 | $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 2024
Shares, value and share of portfolio for each institution holding Rhythm Pharmaceuticals, Inc.; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Alliancebernstein L.P. | 53,430 | $2.32M | 0.00% | −960−1.8% | Reduced |
| JPMorgan Chase & Co | 54,504 | $2.36M | 0.00% | −23,095−29.8% | Reduced |
| BNP Paribas Arbitrage, SA | 56,009 | $2.43M | 0.00% | −7,076−11.2% | Reduced |
| Altium Capital Management LP | 57,271 | $2.48M | 1.11% | +50,786+783.1% | Added |
| Castleark Management LLC | 63,900 | $2.77M | 0.12% | +63,900 | New |
| Jefferies Financial Group Inc. | 68,566 | $2.97M | 0.06% | −13,495−16.4% | Reduced |
| Algert Global LLC | 69,048 | $2.99M | 0.12% | +40,245+139.7% | Added |
| AQR Capital Management LLC | 70,999 | $3.08M | 0.01% | +56,017+373.9% | Added |
| Wedge Capital Management L L P | 73,873 | $3.20M | 0.05% | −2,634−3.4% | Reduced |
| Rhumbline Advisers | 76,724 | $3.32M | 0.00% | +3,552+4.9% | Added |
| Hennion & Walsh Asset Management, Inc. | 86,967 | $3.77M | 0.20% | +20,259+30.4% | Added |
| Invesco Ltd. | 88,205 | $3.82M | 0.00% | −47,526−35.0% | Reduced |
| Rice Hall James & Associates, LLC | 89,726 | $3.89M | 0.22% | +121+0.1% | Added |
| Clearbridge Investments, LLC | 90,004 | $3.90M | 0.00% | −1,154−1.3% | Reduced |
| Swiss National Bank | 93,300 | $4.04M | 0.00% | +3,600+4.0% | Added |
| Susquehanna International Group, LLP | 103,253 | $4.47M | 0.01% | +71,021+220.3% | Added |
| JGP Global Gestao de Recursos Ltda. | 105,814 | $4.58M | 2.95% | +100,126+1,760.3% | Added |
| Squarepoint Ops LLC | 108,755 | $4.71M | 0.02% | +93,405+608.5% | Added |
| Bank of America Corp | 111,114 | $4.81M | 0.00% | +41,244+59.0% | Added |
| Ghost Tree Capital, LLC | 125,000 | $5.42M | 1.74% | +125,000 | New |
| Barclays PLC | 127,536 | $5.53M | 0.00% | −123,879−49.3% | Reduced |
| Nuveen Asset Management, LLC | 142,735 | $6.18M | 0.00% | −934−0.7% | Reduced |
| Nisa Investment Advisors, LLC | 145,291 | $6.30M | 0.04% | +144,035+11,467.8% | Added |
| Bank of New York Mellon Corp | 167,838 | $7.27M | 0.00% | −12,384−6.9% | Reduced |
| UBS Group AG | 171,565 | $7.43M | 0.00% | +85,610+99.6% | Added |
| Woodline Partners LP | 172,207 | $7.46M | 0.07% | +97,357+130.1% | Added |
| Samsara BioCapital, LLC | 172,647 | $7.48M | 1.16% | 00.0% | Unchanged |
| Voya Investment Management LLC | 172,752 | $7.49M | 0.01% | +107,761+165.8% | Added |
| Morgan Stanley | 182,870 | $7.92M | 0.00% | −48,786−21.1% | Reduced |
| Silverarc Capital Management, LLC | 183,776 | $7.96M | 2.23% | +9,528+5.5% | Added |
| Citigroup Inc | 190,520 | $8.26M | 0.01% | +136,220+250.9% | Added |
| Wellington Management Group LLP | 193,523 | $8.39M | 0.00% | +53,721+38.4% | Added |
| UBS Asset Management Americas Inc | 206,980 | $8.97M | 0.00% | −2,958−1.4% | Reduced |
| Rafferty Asset Management, LLC | 218,657 | $9.47M | 0.04% | +97,003+79.7% | Added |
| Franklin Resources Inc | 220,905 | $9.57M | 0.00% | +215,029+3,659.4% | Added |
| Artisan Partners Limited Partnership | 271,421 | $11.8M | 0.02% | 00.0% | Unchanged |
| Lord, Abbett & Co. LLC | 281,157 | $12.2M | 0.04% | −2,361−0.8% | Reduced |
| Assenagon Asset Management S.A. | 285,651 | $12.4M | 0.03% | −15,985−5.3% | Reduced |
| National Bank of Canada | 367,517 | $14.4M | 0.03% | +128,517+53.8% | Added |
| Charles Schwab Investment Management Inc | 406,745 | $17.6M | 0.00% | +9,060+2.3% | Added |
| Voloridge Investment Management, LLC | 473,455 | $20.5M | 0.07% | +110,738+30.5% | Added |
| Price T Rowe Associates Inc | 481,533 | $20.9M | 0.00% | −90,764−15.9% | Reduced |
| Northern Trust Corp | 502,855 | $21.8M | 0.00% | +1,761+0.4% | Added |
| Opaleye Management Inc. | 515,000 | $22.3M | 4.86% | −95,000−15.6% | Reduced |
| Cormorant Asset Management, LP | 550,000 | $23.8M | 1.05% | 00.0% | Unchanged |
| Canada Pension Plan Investment Board | 577,000 | $25.0M | 0.03% | +310,000+116.1% | Added |
| Janus Henderson Group PLC | 621,427 | $26.9M | 0.01% | −465−0.1% | Reduced |
| OrbiMed Advisors LLC | 704,842 | $30.5M | 0.60% | +168,200+31.3% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 730,643 | $31.7M | 0.11% | +578,800+381.2% | Added |
| Checkpoint Capital L.P. | 825,500 | $35.8M | 23.91% | +95,500+13.1% | Added |
| Driehaus Capital Management LLC | 855,505 | $37.1M | 0.37% | +256,600+42.8% | Added |
| Commodore Capital LP | 1,050,000 | $45.5M | 3.04% | −500,000−32.3% | Reduced |
| Geode Capital Management, LLC | 1,180,705 | $51.2M | 0.00% | +61,576+5.5% | Added |
| Pictet Asset Management Holding SA | 1,211,679 | $52.5M | 0.06% | +47,718+4.1% | Added |
| Polar Capital Holdings Plc | 1,500,000 | $65.0M | 0.39% | −250,000−14.3% | Reduced |
| Rock Springs Capital Management LP | 1,522,893 | $66.0M | 1.68% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 1,661,097 | $72.0M | 0.17% | −649,858−28.1% | Reduced |
| Frazier Life Sciences Management, L.P. | 2,190,179 | $94.9M | 4.00% | −181,125−7.6% | Reduced |
| NEA Management Company, LLC | 2,909,956 | $126.1M | 7.83% | 00.0% | Unchanged |
| State Street Corp | 3,013,838 | $130.6M | 0.01% | +807,820+36.6% | Added |
| Perceptive Advisors LLC | 3,268,579 | $141.6M | 2.50% | +1,114,469+51.7% | Added |
| Vanguard Group Inc | 3,304,146 | $143.2M | 0.00% | +77,208+2.4% | Added |
| Goldman Sachs Group Inc | 5,111,601 | $221.5M | 0.05% | +63,667+1.3% | Added |
| Ra Capital Management, L.P. | 5,330,412 | $231.0M | 2.94% | 00.0% | Unchanged |
| Baker Bros. Advisors LP | 6,398,365 | $277.2M | 3.48% | 00.0% | Unchanged |
| BlackRock Inc. | 6,529,646 | $282.9M | 0.01% | +177,896+2.8% | Added |
| Primecap Management Co | 7,747,591 | $335.7M | 0.25% | −305,057−3.8% | Reduced |
| VR Adviser, LLC | 0 | $0 | 0.00% | −495,983−100.0% | Sold out |
| Dimensional Fund Advisors LP | 0 | $0 | 0.00% | −96,948−100.0% | Sold out |
| Zimmer Partners, LP | 0 | $0 | 0.00% | −61,800−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −54,534−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −40,197−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −34,831−100.0% | Sold out |
| Mirae Asset Global Investments Co., Ltd. | 0 | $0 | 0.00% | −29,444−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −26,501−100.0% | Sold out |
| State Board of Administration of Florida Retirement System | 0 | $0 | 0.00% | −14,670−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −12,793−100.0% | Sold out |
| Fred Alger Management, LLC | 0 | $0 | 0.00% | −11,795−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −10,593−100.0% | Sold out |
| Concurrent Investment Advisors, LLC | 0 | $0 | 0.00% | −7,472−100.0% | Sold out |
| Stratos Wealth Partners, LTD. | 0 | $0 | 0.00% | −7,264−100.0% | Sold out |
| Scientech Research LLC | 0 | $0 | 0.00% | −5,125−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −5,089−100.0% | Sold out |
| Old Well Partners, LLC | 0 | $0 | 0.00% | −4,600−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −4,386−100.0% | Sold out |
| BIT Capital GmbH | 0 | $0 | 0.00% | −2,489−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −1,500−100.0% | Sold out |
| nVerses Capital, LLC | 0 | $0 | 0.00% | – | Sold out |
| Northwestern Mutual Wealth Management Co | 0 | $0 | 0.00% | −1,250−100.0% | Sold out |
| AJOVista, LLC | 0 | $0 | 0.00% | −920−100.0% | Sold out |
| EntryPoint Capital, LLC | 0 | $0 | 0.00% | −317−100.0% | Sold out |
| Focused Wealth Management, Inc | 0 | $0 | 0.00% | −300−100.0% | Sold out |
| Bell Investment Advisors, Inc | 0 | $0 | 0.00% | −19−100.0% | Sold out |
| GWM Advisors LLC | 0 | $0 | 0.00% | −5−100.0% | Sold out |