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, Q4 2023
Institutional positions in Rhythm Pharmaceuticals, Inc. as of Dec 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
- 169
- +25 vs. Q3 2023
- Shares held
- 66.7M
- −1.44M (−2.1%) vs. Q3 2023
- Total value
- $3.07B
- +$1.50B (+96.3%) vs. Q3 2023
- New holders
- 45
- 41 more added
- Sold out
- 20
- 64 more reduced
Compare with Q3 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, Q4 2023
Shares, value and share of portfolio for each institution holding Rhythm Pharmaceuticals, Inc.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Citigroup Inc | 54,300 | $2.50M | 0.00% | −14,844−21.5% | Reduced |
| Alliancebernstein L.P. | 54,390 | $2.50M | 0.00% | 00.0% | Unchanged |
| HRT Financial LP | 54,534 | $2.51M | 0.02% | +3,982+7.9% | Added |
| Zimmer Partners, LP | 61,800 | $2.84M | 0.10% | −20,700−25.1% | Reduced |
| BNP Paribas Arbitrage, SA | 63,085 | $2.90M | 0.01% | +7,842+14.2% | Added |
| Voya Investment Management LLC | 64,991 | $2.99M | 0.00% | −19,268−22.9% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 65,544 | $3.01M | 0.01% | −66,118−50.2% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 66,708 | $3.07M | 0.18% | +26,562+66.2% | Added |
| Bank of America Corp | 69,870 | $3.21M | 0.00% | −40,373−36.6% | Reduced |
| Exome Asset Management LLC | 72,203 | $3.32M | 3.28% | +72,203 | New |
| Rhumbline Advisers | 73,172 | $3.36M | 0.00% | −287−0.4% | Reduced |
| Woodline Partners LP | 74,850 | $3.44M | 0.04% | +74,850 | New |
| Wedge Capital Management L L P | 76,507 | $3.52M | 0.06% | −28,213−26.9% | Reduced |
| JPMorgan Chase & Co | 77,599 | $3.57M | 0.00% | +5,188+7.2% | Added |
| Natixis | 80,500 | $3.70M | 0.03% | +80,500 | New |
| Jefferies Financial Group Inc. | 82,061 | $3.77M | 0.06% | −41,599−33.6% | Reduced |
| UBS Group AG | 85,955 | $3.95M | 0.00% | +59,304+222.5% | Added |
| Rice Hall James & Associates, LLC | 89,605 | $4.12M | 0.24% | −67,821−43.1% | Reduced |
| Swiss National Bank | 89,700 | $4.12M | 0.00% | −10,200−10.2% | Reduced |
| Clearbridge Investments, LLC | 91,158 | $4.19M | 0.00% | −91,667−50.1% | Reduced |
| Dimensional Fund Advisors LP | 96,948 | $4.46M | 0.00% | 00.0% | Unchanged |
| Citadel Advisors LLC | 113,915 | $5.24M | 0.01% | −141,518−55.4% | Reduced |
| Rafferty Asset Management, LLC | 121,654 | $5.59M | 0.02% | −41,150−25.3% | Reduced |
| D. E. Shaw & Co., Inc. | 128,492 | $5.91M | 0.01% | +128,492 | New |
| Invesco Ltd. | 135,731 | $6.24M | 0.00% | +107,357+378.4% | Added |
| Wellington Management Group LLP | 139,802 | $6.43M | 0.00% | +2,359+1.7% | Added |
| Nuveen Asset Management, LLC | 143,669 | $6.60M | 0.00% | +2,084+1.5% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 151,843 | $6.98M | 0.02% | −25,157−14.2% | Reduced |
| Samsara BioCapital, LLC | 172,647 | $7.94M | 1.23% | −172,646−50.0% | Reduced |
| Silverarc Capital Management, LLC | 174,248 | $8.01M | 2.47% | −86,289−33.1% | Reduced |
| Bank of New York Mellon Corp | 180,222 | $8.28M | 0.00% | +2,846+1.6% | Added |
| Victory Capital Management Inc | 182,297 | $8.38M | 0.01% | +162,247+809.2% | Added |
| Jane Street Group, LLC | 184,359 | $8.47M | 0.01% | +40,357+28.0% | Added |
| UBS Asset Management Americas Inc | 209,938 | $9.65M | 0.00% | −127,326−37.8% | Reduced |
| Morgan Stanley | 231,656 | $10.6M | 0.00% | −204,752−46.9% | Reduced |
| National Bank of Canada | 239,000 | $10.8M | 0.02% | +108,000+82.4% | Added |
| Barclays PLC | 251,415 | $11.6M | 0.01% | +10,154+4.2% | Added |
| Canada Pension Plan Investment Board | 267,000 | $12.3M | 0.02% | +267,000 | New |
| Artisan Partners Limited Partnership | 271,421 | $12.5M | 0.02% | +271,421 | New |
| Lord, Abbett & Co. LLC | 283,518 | $13.0M | 0.05% | +283,518 | New |
| Assenagon Asset Management S.A. | 301,636 | $13.9M | 0.04% | −105,654−25.9% | Reduced |
| Voloridge Investment Management, LLC | 362,717 | $16.7M | 0.07% | +342,350+1,680.9% | Added |
| Charles Schwab Investment Management Inc | 397,685 | $18.3M | 0.00% | +12,937+3.4% | Added |
| VR Adviser, LLC | 495,983 | $22.8M | 1.56% | −594,017−54.5% | Reduced |
| Northern Trust Corp | 501,094 | $23.0M | 0.00% | −2,928−0.6% | Reduced |
| FMR LLC | 529,130 | $24.3M | 0.00% | −339,344−39.1% | Reduced |
| OrbiMed Advisors LLC | 536,642 | $24.7M | 0.49% | −47,000−8.1% | Reduced |
| Cormorant Asset Management, LP | 550,000 | $25.3M | 1.21% | −300,000−35.3% | Reduced |
| Price T Rowe Associates Inc | 572,297 | $26.3M | 0.00% | +361,945+172.1% | Added |
| Driehaus Capital Management LLC | 598,905 | $27.5M | 0.33% | +324,381+118.2% | Added |
| Opaleye Management Inc. | 610,000 | $28.0M | 7.53% | −43,000−6.6% | Reduced |
| Janus Henderson Group PLC | 621,892 | $28.6M | 0.02% | −443,853−41.6% | Reduced |
| Checkpoint Capital L.P. | 730,000 | $33.6M | 23.42% | +730,000 | New |
| Geode Capital Management, LLC | 1,119,129 | $51.5M | 0.01% | +74,072+7.1% | Added |
| Pictet Asset Management Holding SA | 1,163,961 | $53.5M | 0.06% | +1,163,961 | New |
| Rock Springs Capital Management LP | 1,522,893 | $70.0M | 1.73% | −74,230−4.6% | Reduced |
| Commodore Capital LP | 1,550,000 | $71.3M | 6.23% | −525,000−25.3% | Reduced |
| Polar Capital Holdings Plc | 1,750,000 | $80.4M | 0.56% | −750,000−30.0% | Reduced |
| Perceptive Advisors LLC | 2,154,110 | $99.0M | 2.21% | +1,773,282+465.6% | Added |
| State Street Corp | 2,206,018 | $101.4M | 0.00% | −159,838−6.8% | Reduced |
| Federated Hermes, Inc. | 2,310,955 | $106.2M | 0.26% | −30,380−1.3% | Reduced |
| Frazier Life Sciences Management, L.P. | 2,371,304 | $109.0M | 5.83% | 00.0% | Unchanged |
| NEA Management Company, LLC | 2,909,956 | $133.8M | 8.92% | 00.0% | Unchanged |
| Vanguard Group Inc | 3,226,938 | $148.3M | 0.00% | +212,370+7.0% | Added |
| Goldman Sachs Group Inc | 5,047,934 | $232.1M | 0.05% | −112,607−2.2% | Reduced |
| Ra Capital Management, L.P. | 5,330,412 | $245.0M | 3.83% | −345,655−6.1% | Reduced |
| BlackRock Inc. | 6,351,750 | $292.0M | 0.01% | +151,868+2.4% | Added |
| Baker Bros. Advisors LP | 6,398,365 | $294.1M | 3.35% | −303,984−4.5% | Reduced |
| Primecap Management Co | 8,052,648 | $370.2M | 0.29% | −214,773−2.6% | Reduced |
| Alkeon Capital Management LLC | 0 | $0 | 0.00% | −1,725,167−100.0% | Sold out |
| Logos Global Management LP | 0 | $0 | 0.00% | −400,000−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −207,500−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −80,102−100.0% | Sold out |
| First Trust Advisors LP | 0 | $0 | 0.00% | −75,315−100.0% | Sold out |
| Adage Capital Partners GP, L.L.C. | 0 | $0 | 0.00% | −43,815−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −34,494−100.0% | Sold out |
| Point72 Middle East FZE | 0 | $0 | 0.00% | −31,181−100.0% | Sold out |
| UBS Oconnor LLC | 0 | $0 | 0.00% | −30,000−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −24,514−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −17,186−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −16,465−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −13,071−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | – | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −4,146−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −3,100−100.0% | Sold out |
| Allspring Global Investments Holdings, LLC | 0 | $0 | 0.00% | −2,260−100.0% | Sold out |
| Headinvest, LLC | 0 | $0 | 0.00% | −110−100.0% | Sold out |
| Newbridge Financial Services Group, Inc. | 0 | $0 | 0.00% | −65−100.0% | Sold out |
| Allworth Financial LP | 0 | $0 | 0.00% | −5−100.0% | Sold out |