Fund shareholders of Rhythm Pharmaceuticals Inc
ISIN US76243J1051 · United States · LEI 529900JPNWXQ8DPLA551
- Fund shareholders
- 316
- Of which ETFs
- 52 264 other funds
- Value held
- 2.3B $ 18.2M SEK · 65.4K €
- Share of capital
- 39.3 % of 68.9M shares on Aug 1, 2026
316 funds hold this company. This table lists the 315 that declare it in a regulatory filing. 1 more fund publishes its holdings in its own report. It is not in the table.
| Fund | Shares | Value | Weight in fund | Share of capital | |
|---|---|---|---|---|---|
| PROFUND VP ULTRA SMALL CAP ProFunds | 177 | 15.4K $ | 0.10 % | 0.00 % | as of Mar 31, 2026 ↗ |
| SIMT Multi-Asset Inflation Managed Fund SEI INSTITUTIONAL MANAGED TRUST | 168 | 14.6K $ | 0.00 % | 0.00 % | as of Mar 31, 2026 ↗ |
| T. Rowe Price Innovation Leaders ETF T. Rowe Price Exchange-Traded Funds, Inc. | 140 | 12.2K $ | 0.08 % | 0.00 % | as of Mar 31, 2026 ↗ |
| PROFUND VP SMALL CAP ProFunds | 134 | 11.7K $ | 0.10 % | 0.00 % | as of Mar 31, 2026 ↗ |
| Fidelity Series Sustainable U.S. Market Fund Fidelity Summer Street Trust | 129 | 10.5K $ | 0.02 % | 0.00 % | as of Apr 30, 2026 ↗ |
| Russell 2000 Fund Rydex Series Funds | 119 | 10.3K $ | 0.08 % | 0.00 % | as of Mar 31, 2026 ↗ |
| E*TRADE No Fee Total Market Index Fund E Trade Trust | 101 | 8.2K $ | 0.01 % | 0.00 % | as of Apr 30, 2026 ↗ |
| SMALL-CAP PROFUND ProFunds | 97 | 7.9K $ | 0.10 % | 0.00 % | as of Apr 30, 2026 ↗ |
| Russell 2000 1.5x Strategy Fund Rydex Series Funds | 72 | 6.3K $ | 0.11 % | 0.00 % | as of Mar 31, 2026 ↗ |
| Columbia Research Enhanced Small Cap ETF Columbia ETF Trust I | 62 | 5.4K $ | 0.18 % | 0.00 % | as of Mar 31, 2026 ↗ |
| Kennedy Capital Small Cap Growth Fund INVESTMENT MANAGERS SERIES TRUST II | 61 | 5.3K $ | 1.07 % | 0.00 % | as of Mar 31, 2026 ↗ |
| ProShares Hedge Replication ETF ProShares Trust | 54 | 5K $ | 0.02 % | 0.00 % | as of Feb 28, 2026 ↗ |
| ProShares Russell 2000 Dynamic Buffer ETF ProShares Trust | 17 | 1.6K $ | 0.14 % | 0.00 % | as of Feb 28, 2026 ↗ |
| Russell 2000(R) 1.5x Strategy Fund Rydex Variable Trust | 14 | 1.2K $ | 0.04 % | 0.00 % | as of Mar 31, 2026 ↗ |
| A&P LIFESCIENCE FUND, FI WELZIA MANAGEMENT, SGIIC, S.A. | 65.4K € | 1.78 % | as of Dec 31, 2025 ↗ |
The funds most exposed to it
The weight is the share of a fund's net assets. The holders table ranks funds by number of shares. This one ranks them by the weight of the company in each fund.
| Fund | Weight in fund | |
|---|---|---|
| Harbor Health Care ETF Harbor ETF Trust | 3.79 % | as of Apr 30, 2026 ↗ |
| PRIMECAP Odyssey Aggressive Growth Fund PRIMECAP Odyssey Funds | 2.55 % | as of Apr 30, 2026 ↗ |
| Pictet - Biotech Pictet Asset Management (Europe) S.A. | 2.35 % | as of Sep 30, 2025 ↗ |
| AlphaCentric Life Sciences and Healthcare Fund MUTUAL FUND SERIES TRUST | 2.06 % | as of Mar 31, 2026 ↗ |
| A&P LIFESCIENCE FUND, FI WELZIA MANAGEMENT, SGIIC, S.A. | 1.78 % | as of Dec 31, 2025 ↗ |
| Federated Hermes Kaufmann Small Cap Fund Federated Hermes Equity Funds | 1.67 % | as of Apr 30, 2026 ↗ |
| PRIMECAP Odyssey Growth Fund PRIMECAP Odyssey Funds | 1.64 % | as of Apr 30, 2026 ↗ |
| Harbor Human Capital Factor US Small Cap ETF Harbor ETF Trust | 1.58 % | as of Apr 30, 2026 ↗ |
| Roundhill GLP-1 & Weight Loss ETF Roundhill ETF Trust | 1.43 % | as of Mar 31, 2026 ↗ |
| Harbor Small Cap Growth Fund HARBOR FUNDS | 1.38 % | as of Apr 30, 2026 ↗ |
Quarter after quarter
Each row is one quarter of SEC filings, newest first. The change compares each quarter with the one before.
| Quarter | Shareholders | Change | Shares | Change |
|---|---|---|---|---|
| 2026Q2 | 312 | -8 | 27,005,722 | -0.8 % |
| 2026Q1 | 320 | +21 | 27,219,676 | +6.4 % |
| 2025Q4 | 299 | +46 | 25,593,008 | +10.8 % |
| 2025Q3 | 253 | +17 | 23,094,406 | +3.7 % |
| 2025Q2 | 236 | +33 | 22,276,688 | +5.5 % |
| 2025Q1 | 203 | +20 | 21,124,445 | +2.2 % |
| 2024Q4 | 183 | +5 | 20,660,389 | +3.1 % |
| 2024Q3 | 178 | +6 | 20,045,901 | -6.2 % |
| 2024Q2 | 172 | +11 | 21,362,968 | -2.5 % |
| 2024Q1 | 161 | +12 | 21,919,153 | +0.9 % |
| 2023Q4 | 149 | 21,715,976 |
Institutional managers
277 managers declare this company to the SEC (Form 13F). The table shows the 25 largest.
| Manager | Shares | Value | |
|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | 6,666,837 | 579.8M $ | as of Mar 31, 2026 |
| BlackRock, Inc. | 6,237,151 | 542.4M $ | as of Mar 31, 2026 |
| BAKER BROS. ADVISORS LP | 5,604,483 | 487.4M $ | as of Mar 31, 2026 |
| PRIMECAP MANAGEMENT CO/CA/ | 3,417,509 | 297.2M $ | as of Mar 31, 2026 |
| PERCEPTIVE ADVISORS LLC | 2,373,795 | 206.4M $ | as of Mar 31, 2026 |
| STATE STREET CORP | 2,271,851 | 197.6M $ | as of Mar 31, 2026 |
| GOLDMAN SACHS GROUP INC | 1,965,432 | 170.9M $ | as of Mar 31, 2026 |
| WESTFIELD CAPITAL MANAGEMENT CO LP | 1,929,123 | 167.8M $ | as of Mar 31, 2026 |
| FMR LLC | 1,689,671 | 147M $ | as of Mar 31, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1,654,876 | 143.9K $ | as of Mar 31, 2026 |
| Polar Capital Holdings Plc | 1,615,586 | 140.5M $ | as of Mar 31, 2026 |
| JPMORGAN CHASE & CO | 1,553,644 | 120M $ | as of Mar 31, 2026 |
| CITADEL ADVISORS LLC | 1,418,619 | 123.4M $ | as of Mar 31, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | 1,416,269 | 123.2M $ | as of Mar 31, 2026 |
| FEDERATED HERMES, INC. | 1,286,303 | 111.9M $ | as of Mar 31, 2026 |
| Checkpoint Capital L.P. | 1,227,200 | 106.7M $ | as of Mar 31, 2026 |
| Capital Research Global Investors | 1,115,460 | 97M $ | as of Mar 31, 2026 |
| JANUS HENDERSON GROUP PLC | 918,153 | 79.9M $ | as of Mar 31, 2026 |
| ALLIANCEBERNSTEIN L.P. | 910,413 | 97.5M $ | as of Mar 31, 2026 |
| Point72 Asset Management, L.P. | 846,801 | 73.6M $ | as of Mar 31, 2026 |
| Woodline Partners LP | 758,891 | 66M $ | as of Mar 31, 2026 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 725,744 | 63.1M $ | as of Mar 31, 2026 |
| Siren, L.L.C. | 725,511 | 63.1M $ | as of Mar 31, 2026 |
| MORGAN STANLEY | 703,978 | 61.2M $ | as of Mar 31, 2026 |
| Rock Springs Capital Management LP | 689,748 | 60M $ | as of Mar 31, 2026 |
Declared shareholders of Rhythm Pharmaceuticals Inc
There are 2 beneficial ownership filings. These stakes do not add up. An asset manager that files includes its own funds, which already appear among the funds on this page.
| Shareholder | Declared stake | Shares | |
|---|---|---|---|
| Perceptive Advisors LLC and 3 others | 5.10 % | 3,519,626 | as of Mar 31, 2026 · SCHEDULE 13G |
| Vanguard Capital Management | 5.02 % | 3,432,949 | as of Mar 31, 2026 · SCHEDULE 13G |
Cite this page
Titelia. "Fund shareholders of Rhythm Pharmaceuticals Inc". https://titelia.com/en/stocks/rhythm-pharmaceuticals-inc-US76243J1051