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Who owns Rhythm Pharmaceuticals (RYTM) stock

286 funds reported Rhythm Pharmaceuticals (RYTM) shares in their latest 13F filings, worth $8.8B in all. The largest holder is RA Capital Management, L.P. ($740M). Last quarter 143 funds added to their stakes and 136 cut them.

Largest holders of RYTM (13F)Largest holders of RYTM (13F)RA Capital Management, L.P.$740MBlackRock$684MVanguard Group$665MBaker Bros. Advisors LP$622MPrimecap Management$352MVanguard Portfolio Management LLC$348MVanguard Capital Management LLC$334MPerceptive Advisors LLC$287MState Street$286MPrice T Rowe Associates$285M

Largest holders (13F)

FundSharesValueChangeQuarter
RA Capital Management, L.P.6,666,837$740Munchanged2026-06-30
BlackRock6,156,902$684Mdecrease2026-06-30
Vanguard Group6,210,916$665Mincrease2025-12-31
Baker Bros. Advisors LP5,604,483$622Munchanged2026-06-30
Primecap Management3,168,853$352Mdecrease2026-06-30
Vanguard Portfolio Management LLC3,136,895$348Mincrease2026-06-30
Vanguard Capital Management LLC3,005,977$334Mincrease2026-06-30
Perceptive Advisors LLC2,586,295$287Mincrease2026-06-30
State Street2,573,529$286Mincrease2026-06-30
Price T Rowe Associates2,566,171$285Mincrease2026-06-30
Westfield Capital Management Co LP2,208,595$245Mincrease2026-06-30
Goldman Sachs Group2,126,502$236Mincrease2026-06-30
Federated Hermes1,785,716$198Mincrease2026-06-30
Polar Capital Holdings1,663,632$185Mincrease2026-06-30
Geode Capital Management, LLC1,533,698$170Mincrease2026-06-30

Rhythm Pharmaceuticals' latest quarter

Rhythm Pharmaceuticals, Q3 2026: revenue $92.1M (+80% year over year), operating margin -42.6%, net loss $41.4M, operating cash flow −$3.1M. The chart follows the revenue to costs, profit and cash.

Questions

Who owns the most RYTM stock?

By the latest 13F filings: RA Capital Management, L.P. ($740M); BlackRock ($684M); Vanguard Group ($665M); Baker Bros. Advisors LP ($622M); Primecap Management ($352M).

What is the short interest in RYTM?

11,003,490 shares were sold short at the 2026-10-15 settlement, 2.19% of the float.

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Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.