RHYTHM PHARMACEUTICALS INC COM is a security (CUSIP 76243J105) tracked across SEC portfolio filings. 295 institutional managers reported $6.4B on Form 13F as of 2026-06-30; 37 registered fund positions totaling $466.5M via N-PORT as of 2026-05-31.
Showing 15 of 295 managers by value.
| Manager | Location | Value | Shares |
|---|---|---|---|
| VANGUARD GROUP INC | Valley Forge, PA | $664.8M | 6,210,916 |
| RA CAPITAL MANAGEMENT, L.P. | Boston, MA | $579.8M | 6,666,837 |
| BlackRock, Inc. | New York, NY | $542.4M | 6,237,151 |
| BAKER BROS. ADVISORS LP | NEW YORK, NY | $487.4M | 5,604,483 |
| PRIMECAP MANAGEMENT CO/CA/ | PASADENA, CA | $297.2M | 3,417,509 |
| PERCEPTIVE ADVISORS LLC | NEW YORK, NY | $206.4M | 2,373,795 |
| STATE STREET CORP | BOSTON, MA | $197.6M | 2,271,851 |
| GOLDMAN SACHS GROUP INC | NEW YORK, NY | $170.9M | 1,965,432 |
| WESTFIELD CAPITAL MANAGEMENT CO LP | BOSTON, MA | $167.8M | 1,929,123 |
| FMR LLC | BOSTON, MA | $147.0M | 1,689,671 |
| Polar Capital Holdings Plc | London, X0 | $140.5M | 1,615,586 |
| CITADEL ADVISORS LLC | MIAMI, FL | $126.4M | 1,418,619 |
| GEODE CAPITAL MANAGEMENT, LLC | BOSTON, MA | $123.2M | 1,416,269 |
| JPMORGAN CHASE & CO | NEW YORK, NY | $120.0M | 1,553,644 |
| FEDERATED HERMES, INC. | Pittsburgh, PA | $111.9M | 1,286,303 |
Showing 15 of 37 fund positions by value.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| SMALLCAP World Fund Inc | SMALLCAP World Fund Inc | $93.9M | 11.59% |
| PRIMECAP Odyssey Growth Fund | PRIMECAP Odyssey Funds | $89.1M | 164.09% |
| VANGUARD EXTENDED MARKET INDEX FUND | VANGUARD INDEX FUNDS | $59.0M | 7.24% |
| T. Rowe Price New Horizons Fund, Inc. | T. ROWE PRICE NEW HORIZONS FUND, INC. | $43.2M | 33.82% |
| VANGUARD EXPLORER FUND | VANGUARD EXPLORER FUND | $30.7M | 14.11% |
| VANGUARD RUSSELL 2000 INDEX FUND | VANGUARD SCOTTSDALE FUNDS | $24.0M | 13.70% |
| T. Rowe Price Health Sciences Fund, Inc. | T. ROWE PRICE HEALTH SCIENCES FUND, INC. | $21.0M | 19.29% |
| LORD ABBETT DEVELOPING GROWTH FUND INC | LORD ABBETT DEVELOPING GROWTH FUND, INC. | $16.4M | 73.82% |
| AB DISCOVERY GROWTH FUND, INC. | AB DISCOVERY GROWTH FUND, INC. | $16.0M | 59.37% |
| Columbia Acorn Fund | COLUMBIA ACORN TRUST | $10.9M | 48.35% |
| BlackRock Health Sciences Term Trust | BlackRock Health Sciences Term Trust | $9.7M | 95.76% |
| Bridge Builder Tax Managed Small/Mid Cap Fund | Bridge Builder Trust | $9.1M | 29.89% |
| Master Small Cap Index Series | Quantitative Master Series LLC | $7.5M | 15.50% |
| Putnam Global Health Care Fund | Putnam Global Health Care Fund | $6.8M | 46.38% |
| abrdn Healthcare Investors | abrdn Healthcare Investors | $4.1M | 35.91% |