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, Q2 2026
Institutional positions in Rhythm Pharmaceuticals, Inc. as of Jun 30, 2026. 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
- 304
- +23 vs. Q1 2026
- Shares held
- 77.2M
- +4.58M (+6.3%) vs. Q1 2026
- Total value
- $8.55B
- +$2.21B (+34.8%) vs. Q1 2026
- New holders
- 64
- 105 more added
- Sold out
- 41
- 101 more reduced
4 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Rhythm Pharmaceuticals, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Sound View Wealth Advisors Group, LLC | 3,682 | $408.8K | 0.03% | +3,682 | New |
| Freestone Capital Holdings, LLC | 3,700 | $410.8K | 0.01% | 00.0% | Unchanged |
| Virginia Retirement Systems Et Al | 3,700 | $410.8K | 0.00% | +3,700 | New |
| Ensign Peak Advisors, Inc | 3,709 | $411.8K | 0.00% | −150−3.9% | Reduced |
| Envestnet Asset Management Inc | 3,769 | $418.5K | 0.00% | +3,769 | New |
| Quantinno Capital Management LP | 3,838 | $426.1K | 0.00% | −13−0.3% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 3,860 | $428.6K | 0.00% | +3,860 | New |
| Magnetar Financial LLC | 3,908 | $433.9K | 0.00% | +3,908 | New |
| Matisse Capital | 4,000 | $444.1K | 0.18% | +4,000 | New |
| JustInvest LLC | 4,054 | $450.1K | 0.00% | +952+30.7% | Added |
| O'Shaughnessy Asset Management, LLC | 4,122 | $457.7K | 0.00% | +4,122 | New |
| Principal Financial Group Inc | 4,220 | $468.5K | 0.00% | −1,417−25.1% | Reduced |
| Abel Hall, LLC | 4,258 | $472.8K | 0.08% | +243+6.1% | Added |
| Fifth Third Bancorp | 4,290 | $476.4K | 0.00% | −970−18.4% | Reduced |
| Susquehanna International Group, LLP | 4,372 | $485.4K | 0.00% | −46,412−91.4% | Reduced |
| Two Sigma Investments, LP | 4,600 | $510.7K | 0.00% | +300+7.0% | Added |
| E Fund Management Co., Ltd. | 4,751 | $527.5K | 0.01% | −1,702−26.4% | Reduced |
| Allstate Corp | 4,925 | $546.8K | 0.01% | +4,925 | New |
| Fulcrum Asset Management LLP | 5,049 | $555.6K | 0.06% | +5,049 | New |
| Ameritas Investment Partners, Inc. | 5,010 | $556.3K | 0.01% | +645+14.8% | Added |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 5,440 | $604.0K | 0.02% | +790+17.0% | Added |
| Xponance, Inc. | 5,465 | $606.8K | 0.00% | +475+9.5% | Added |
| Public Employees Retirement Association of Colorado | 5,463 | $607.0K | 0.00% | 00.0% | Unchanged |
| Gotham Asset Management, LLC | 5,516 | $612.4K | 0.00% | +668+13.8% | Added |
| E. Ohman J:or Asset Management AB | 5,523 | $613.2K | 0.01% | +1,114+25.3% | Added |
| Teachers Retirement System of the State of Kentucky | 5,601 | $622.0K | 0.00% | +5,601 | New |
| Great West Life Assurance Co | 5,797 | $642.0K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 5,945 | $660.1K | 0.00% | +1,101+22.7% | Added |
| Walleye Capital LLC | 5,996 | $665.7K | 0.00% | +5,996 | New |
| STRS Ohio | 6,000 | $666.2K | 0.00% | −22,914−79.2% | Reduced |
| LPL Financial LLC | 6,284 | $697.7K | 0.00% | +86+1.4% | Added |
| State of Wyoming | 6,354 | $705.5K | 0.07% | +6,354 | New |
| Teacher Retirement System of Texas | 6,370 | $707.3K | 0.00% | −960−13.1% | Reduced |
| Pathstone Holdings, LLC | 6,911 | $767.3K | 0.00% | +6,911 | New |
| The PNC Financial Services Group, Inc. | 7,657 | $850.2K | 0.00% | +719+10.4% | Added |
| Victory Capital Management Inc | 7,679 | $852.6K | 0.00% | −12,825−62.5% | Reduced |
| Toth Financial Advisory Corp | 7,800 | $866.0K | 0.08% | −2,200−22.0% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 7,925 | $879.9K | 0.02% | +7,925 | New |
| Exchange Traded Concepts, LLC | 7,966 | $884.5K | 0.00% | −497−5.9% | Reduced |
| Marshall Wace, LLP | 8,174 | $907.6K | 0.00% | −1,454−15.1% | Reduced |
| Inceptionr LLC | 9,353 | $1.04M | 0.26% | +4,974+113.6% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 9,393 | $1.04M | 0.00% | −53,543−85.1% | Reduced |
| AlphaCentric Advisors LLC | 9,449 | $1.05M | 0.89% | +152+1.6% | Added |
| ProShare Advisors LLC | 9,476 | $1.05M | 0.00% | −1,244−11.6% | Reduced |
| Cannon Financial Strategists, Inc. | 10,000 | $1.11M | 0.13% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 10,917 | $1.21M | 0.07% | −1,201−9.9% | Reduced |
| Mackenzie Financial Corp | 10,936 | $1.21M | 0.00% | +10,936 | New |
| Guggenheim Capital LLC | 10,984 | $1.22M | 0.01% | −5,570−33.6% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 11,073 | $1.23M | 0.02% | +11,073 | New |
| Bridgefront Capital, LLC | 11,282 | $1.25M | 0.33% | −1,213−9.7% | Reduced |
| DnB Asset Management AS | 11,465 | $1.27M | 0.00% | +270+2.4% | Added |
| Intech Investment Management LLC | 11,664 | $1.30M | 0.01% | −2,075−15.1% | Reduced |
| Jones Financial Companies LLLP | 12,066 | $1.33M | 0.00% | +7,148+145.3% | Added |
| Entropy Technologies, LP | 12,077 | $1.34M | 0.05% | +1,759+17.0% | Added |
| KLP Kapitalforvaltning AS | 12,500 | $1.39M | 0.00% | 00.0% | Unchanged |
| Stifel Financial Corp | 12,689 | $1.41M | 0.00% | +350+2.8% | Added |
| Virtus Investment Advisers, Inc. | 13,158 | $1.46M | 0.34% | +5,724+77.0% | Added |
| Barclays PLC | 13,209 | $1.47M | 0.00% | +2,557+24.0% | Added |
| HighVista Strategies LLC | 13,657 | $1.52M | 0.35% | −3,139−18.7% | Reduced |
| Jasper Ridge Partners, L.P. | 13,845 | $1.54M | 0.03% | 00.0% | Unchanged |
| Tudor Investment Corp Et Al | 13,886 | $1.54M | 0.01% | −5,760−29.3% | Reduced |
| Natixis Advisors, L.P. | 14,483 | $1.61M | 0.00% | +14,483 | New |
| Vanguard Investments Australia, Ltd. | 14,666 | $1.63M | 0.00% | +739+5.3% | Added |
| Arizona State Retirement System | 15,073 | $1.67M | 0.01% | −508−3.3% | Reduced |
| State Board of Administration of Florida Retirement System | 15,342 | $1.70M | 0.00% | +692+4.7% | Added |
| Los Angeles Capital Management LLC | 15,641 | $1.74M | 0.01% | +6,422+69.7% | Added |
| Police & Firemen's Retirement System of New Jersey | 16,280 | $1.81M | 0.01% | +1,686+11.6% | Added |
| Profund Advisors LLC | 16,805 | $1.87M | 0.05% | −5,982−26.3% | Reduced |
| State of New Jersey Common Pension Fund D | 17,664 | $1.96M | 0.01% | −1,722−8.9% | Reduced |
| Knights of Columbus Asset Advisors LLC | 18,043 | $2.00M | 0.10% | +2,454+15.7% | Added |
| Lazard Asset Management LLC | 18,319 | $2.03M | 0.00% | −14,569−44.3% | Reduced |
| Handelsbanken Fonder AB | 18,921 | $2.10M | 0.01% | +1,400+8.0% | Added |
| Dimensional Fund Advisors LP | 18,973 | $2.11M | 0.00% | −178−0.9% | Reduced |
| Legato Capital Management LLC | 19,024 | $2.11M | 0.18% | +19,024 | New |
| Aquatic Capital Management LLC | 19,754 | $2.19M | 0.08% | −9,917−33.4% | Reduced |
| Captrust Financial Advisors | 19,945 | $2.21M | 0.00% | +1,798+9.9% | Added |
| SG Americas Securities, LLC | 21,333 | $2.37M | 0.00% | +2,573+13.7% | Added |
| Advisors Asset Management, Inc. | 21,896 | $2.43M | 0.04% | +3,178+17.0% | Added |
| SEI Investments Co | 22,087 | $2.45M | 0.00% | −18,598−45.7% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 23,109 | $2.57M | 0.00% | +7,511+48.2% | Added |
| Wedge Capital Management L L P | 23,422 | $2.60M | 0.04% | −1,113−4.5% | Reduced |
| Vanguard Global Advisers, LLC | 23,654 | $2.63M | 0.00% | −6,046−20.4% | Reduced |
| Creative Planning | 25,835 | $2.87M | 0.00% | +4,750+22.5% | Added |
| Mutual of America Capital Management LLC | 27,861 | $3.09M | 0.03% | +5,332+23.7% | Added |
| Aspiriant, LLC | 27,960 | $3.10M | 0.08% | −5,047−15.3% | Reduced |
| Schonfeld Strategic Advisors LLC | 28,607 | $3.18M | 0.02% | +28,607 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 29,159 | $3.23M | 0.00% | −5,518−15.9% | Reduced |
| D. E. Shaw & Co., Inc. | 30,168 | $3.35M | 0.00% | −2,484−7.6% | Reduced |
| MetLife Investment Management | 32,104 | $3.56M | 0.02% | +3,215+11.1% | Added |
| State of Wisconsin Investment Board | 32,189 | $3.57M | 0.01% | −4,382−12.0% | Reduced |
| Rafferty Asset Management, LLC | 32,207 | $3.58M | 0.01% | −17,898−35.7% | Reduced |
| Exome Asset Management LLC | 32,209 | $3.58M | 2.21% | −8,372−20.6% | Reduced |
| First Trust Advisors LP | 32,482 | $3.61M | 0.00% | −53,024−62.0% | Reduced |
| EFG International AG | 33,577 | $3.73M | 0.07% | −637−1.9% | Reduced |
| TD Asset Management Inc | 38,778 | $4.31M | 0.00% | 00.0% | Unchanged |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 41,929 | $4.66M | 0.00% | −1,943−4.4% | Reduced |
| Zweig-DiMenna Associates LLC | 42,100 | $4.67M | 0.42% | +42,100 | New |
| Cinctive Capital Management LP | 42,739 | $4.75M | 0.19% | +42,739 | New |
| Legal & General Group Plc | 43,908 | $4.88M | 0.00% | −3,124−6.6% | Reduced |
| Hillsdale Investment Management Inc. | 44,000 | $4.89M | 0.11% | +3,700+9.2% | Added |