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 |
|---|---|---|---|---|---|
| Primecap Management Co | 8,267,421 | $189.5M | 0.16% | −31,896−0.4% | Reduced |
| Baker Bros. Advisors LP | 6,702,349 | $153.7M | 0.89% | +204,082+3.1% | Added |
| BlackRock Inc. | 6,199,882 | $142.1M | 0.00% | −65,123−1.0% | Reduced |
| Ra Capital Management, L.P. | 5,676,067 | $130.1M | 2.56% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 5,160,541 | $118.3M | 0.03% | −25,472−0.5% | Reduced |
| Vanguard Group Inc | 3,014,568 | $69.1M | 0.00% | +85,139+2.9% | Added |
| NEA Management Company, LLC | 2,909,956 | $66.7M | 5.15% | 00.0% | Unchanged |
| Polar Capital Holdings Plc | 2,500,000 | $57.3M | 0.43% | +250,000+11.1% | Added |
| Frazier Life Sciences Management, L.P. | 2,371,304 | $54.4M | 3.61% | +204,082+9.4% | Added |
| State Street Corp | 2,365,856 | $54.2M | 0.00% | −901,569−27.6% | Reduced |
| Federated Hermes, Inc. | 2,341,335 | $53.7M | 0.14% | −1,550,348−39.8% | Reduced |
| Commodore Capital LP | 2,075,000 | $47.6M | 5.56% | +2,075,000 | New |
| Alkeon Capital Management LLC | 1,725,167 | $39.5M | 0.25% | 00.0% | Unchanged |
| Rock Springs Capital Management LP | 1,597,123 | $36.6M | 0.98% | 00.0% | Unchanged |
| VR Adviser, LLC | 1,090,000 | $25.0M | 2.63% | 00.0% | Unchanged |
| Janus Henderson Group PLC | 1,065,745 | $24.4M | 0.02% | −12,462−1.2% | Reduced |
| Geode Capital Management, LLC | 1,045,057 | $24.0M | 0.00% | +71,707+7.4% | Added |
| FMR LLC | 868,474 | $19.9M | 0.00% | +166,940+23.8% | Added |
| Cormorant Asset Management, LP | 850,000 | $19.5M | 1.14% | +250,000+41.7% | Added |
| Opaleye Management Inc. | 653,000 | $15.0M | 4.92% | −82,000−11.2% | Reduced |
| OrbiMed Advisors LLC | 583,642 | $13.4M | 0.31% | +583,642 | New |
| Northern Trust Corp | 504,022 | $11.6M | 0.00% | +9,820+2.0% | Added |
| Morgan Stanley | 436,408 | $10.0M | 0.00% | +333,227+323.0% | Added |
| Assenagon Asset Management S.A. | 407,290 | $9.34M | 0.03% | −135,920−25.0% | Reduced |
| Logos Global Management LP | 400,000 | $9.17M | 1.31% | +400,000 | New |
| Charles Schwab Investment Management Inc | 384,748 | $8.82M | 0.00% | +34,189+9.8% | Added |
| Perceptive Advisors LLC | 380,828 | $8.73M | 0.29% | +380,828 | New |
| Samsara BioCapital, LLC | 345,293 | $7.92M | 2.42% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 337,264 | $7.73M | 0.00% | +131,229+63.7% | Added |
| Driehaus Capital Management LLC | 274,524 | $6.29M | 0.08% | +251,531+1,093.9% | Added |
| Silverarc Capital Management, LLC | 260,537 | $5.97M | 2.23% | +144,369+124.3% | Added |
| Citadel Advisors LLC | 255,433 | $5.86M | 0.01% | +65,901+34.8% | Added |
| Barclays PLC | 241,261 | $5.53M | 0.00% | +111,033+85.3% | Added |
| Price T Rowe Associates Inc | 210,352 | $4.82M | 0.00% | −12,885−5.8% | Reduced |
| Hudson Bay Capital Management LP | 207,500 | $4.76M | 0.05% | +207,500 | New |
| Clearbridge Investments, LLC | 182,825 | $4.19M | 0.00% | +182,825 | New |
| Bank of New York Mellon Corp | 177,376 | $4.07M | 0.00% | −10,420−5.5% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 177,000 | $4.06M | 0.02% | +177,000 | New |
| Rafferty Asset Management, LLC | 162,804 | $3.73M | 0.02% | −96,540−37.2% | Reduced |
| Rice Hall James & Associates, LLC | 157,426 | $3.61M | 0.23% | −1,533−1.0% | Reduced |
| ExodusPoint Capital Management, LP | 152,443 | $3.50M | 0.04% | +136,762+872.2% | Added |
| Jane Street Group, LLC | 144,002 | $3.30M | 0.01% | +67,978+89.4% | Added |
| Nuveen Asset Management, LLC | 141,585 | $3.25M | 0.00% | −56,858−28.7% | Reduced |
| Wellington Management Group LLP | 137,443 | $3.15M | 0.00% | −2,778−2.0% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 131,662 | $3.02M | 0.02% | +73,543+126.5% | Added |
| National Bank of Canada | 131,000 | $2.90M | 0.01% | +131,000 | New |
| Jefferies Financial Group Inc. | 123,660 | $2.83M | 0.07% | −510−0.4% | Reduced |
| Bank of America Corp | 110,243 | $2.53M | 0.00% | −29,875−21.3% | Reduced |
| Wedge Capital Management L L P | 104,720 | $2.40M | 0.05% | −113,705−52.1% | Reduced |
| Swiss National Bank | 99,900 | $2.29M | 0.00% | +1,100+1.1% | Added |
| Dimensional Fund Advisors LP | 96,948 | $2.22M | 0.00% | −7,010−6.7% | Reduced |
| Voya Investment Management LLC | 84,259 | $1.93M | 0.00% | +221+0.3% | Added |
| Zimmer Partners, LP | 82,500 | $1.89M | 0.05% | +82,500 | New |
| Cubist Systematic Strategies, LLC | 80,102 | $1.84M | 0.02% | +80,102 | New |
| First Trust Advisors LP | 75,315 | $1.73M | 0.00% | +31,150+70.5% | Added |
| Rhumbline Advisers | 73,459 | $1.68M | 0.00% | +3,861+5.5% | Added |
| Bellevue Group AG | 73,300 | $1.68M | 0.03% | +73,300 | New |
| JPMorgan Chase & Co | 72,411 | $1.66M | 0.00% | +2,823+4.1% | Added |
| Citigroup Inc | 69,144 | $1.59M | 0.00% | −18,921−21.5% | Reduced |
| BNP Paribas Arbitrage, SA | 55,243 | $1.27M | 0.00% | +1,888+3.5% | Added |
| Alliancebernstein L.P. | 54,390 | $1.25M | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 53,709 | $1.23M | 0.00% | −23,385−30.3% | Reduced |
| California State Teachers Retirement System | 51,534 | $1.18M | 0.00% | −5,495−9.6% | Reduced |
| HRT Financial LP | 50,552 | $1.16M | 0.01% | +50,552 | New |
| Stifel Financial Corp | 45,990 | $1.05M | 0.00% | −706−1.5% | Reduced |
| Comerica Bank | 45,671 | $1.05M | 0.01% | +45,671 | New |
| SG Americas Securities, LLC | 44,874 | $1.03M | 0.01% | +44,874 | New |
| Adage Capital Partners GP, L.L.C. | 43,815 | $1.00M | 0.00% | +43,815 | New |
| Credit Suisse AG | 43,318 | $993.1K | 0.00% | −25,683−37.2% | Reduced |
| Legal & General Group Plc | 43,154 | $989.3K | 0.00% | +501+1.2% | Added |
| Alps Advisors Inc | 41,951 | $961.7K | 0.01% | +158+0.4% | Added |
| Hennion & Walsh Asset Management, Inc. | 40,146 | $920.3K | 0.06% | +18,963+89.5% | Added |
| Nan Fung Group Holdings Ltd | 40,070 | $918.6K | 0.74% | 00.0% | Unchanged |
| Millennium Management LLC | 38,772 | $888.8K | 0.00% | +38,772 | New |
| State of Wisconsin Investment Board | 38,637 | $885.8K | 0.00% | −4,179−9.8% | Reduced |
| Marshall Wace, LLP | 34,494 | $790.9K | 0.00% | −1,877−5.2% | Reduced |
| Algert Global LLC | 33,413 | $766.0K | 0.04% | −25,680−43.5% | Reduced |
| Point72 Middle East FZE | 31,181 | $714.8K | 0.04% | +31,181 | New |
| Susquehanna International Group, LLP | 30,456 | $698.2K | 0.00% | +14,158+86.9% | Added |
| Mirae Asset Global Investments Co., Ltd. | 30,333 | $695.4K | 0.00% | −3,651−10.7% | Reduced |
| UBS Oconnor LLC | 30,000 | $687.8K | 0.01% | +30,000 | New |
| Tudor Investment Corp Et Al | 29,344 | $672.7K | 0.01% | +17,951+157.6% | Added |
| Invesco Ltd. | 28,374 | $650.5K | 0.00% | +98+0.3% | Added |
| Profund Advisors LLC | 27,818 | $637.7K | 0.04% | −19,262−40.9% | Reduced |
| Deutsche Bank AG | 27,452 | $629.5K | 0.00% | +3,227+13.3% | Added |
| MetLife Investment Management | 27,123 | $621.8K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 26,651 | $611.0K | 0.00% | −61,198−69.7% | Reduced |
| American International Group, Inc. | 25,640 | $587.8K | 0.00% | +911+3.7% | Added |
| Trexquant Investment LP | 24,514 | $562.0K | 0.01% | +24,514 | New |
| Ameriprise Financial Inc | 21,980 | $503.9K | 0.00% | +3,840+21.2% | Added |
| New York State Common Retirement Fund | 20,641 | $473.2K | 0.00% | +541+2.7% | Added |
| Voloridge Investment Management, LLC | 20,367 | $466.9K | 0.00% | +20,367 | New |
| AQR Capital Management LLC | 20,296 | $465.3K | 0.00% | +7,580+59.6% | Added |
| Manufacturers Life Insurance Company, The | 20,163 | $462.2K | 0.00% | −743−3.6% | Reduced |
| Victory Capital Management Inc | 20,050 | $459.6K | 0.00% | +20,050 | New |
| Fiduciary Trust Co | 20,000 | $458.5K | 0.01% | 00.0% | Unchanged |
| Atom Investors LP | 19,386 | $444.4K | 0.10% | +19,386 | New |
| Ensign Peak Advisors, Inc | 18,550 | $425.3K | 0.00% | +2,350+14.5% | Added |
| Virtus ETF Advisers LLC | 17,193 | $394.1K | 0.24% | −2,221−11.4% | Reduced |
| Fox Run Management, L.L.C. | 17,186 | $394.0K | 0.12% | +17,186 | New |