RYTMRhythm Pharmaceuticals, Inc.

$111.91

Who owns RYTM

282 institutions reported holding RYTM for 2026Q1, together 108% of the company, more than the 276 a quarter earlier.

282

Institutions reporting a position · as of 2026Q1 · up from 276 the quarter before

Shares held by institutions
73.5M

Shares held by institutions · 108% of the company · long US equity positions only, as reported on Form 13F

Reported value
$6.42B

Reported value · at 2026-03-31 prices, not today's

Top 5 holders
42%

Top 5 holders · of the whole company, between five filers

Details
Reporting quarter2026-03-31
2026Q1
Quarters on record
34
New positions
56
Positions exited
56
Added to
100
Reduced
82
Top 10 holdersof the company
57%
Institutional ownership by quarter, 2017Q4 to 2026Q1
QuarterFilersSharesReported value
2026Q128273.5M$6.42B
2025Q427672.8M$7.79B
2025Q326170.8M$7.15B
2025Q222466.5M$4.20B
2025Q122564.7M$3.43B
2024Q420064.8M$3.63B
2024Q317367.6M$3.54B
2024Q216369.2M$2.84B
2024Q116668.0M$2.95B
2023Q416866.7M$3.07B
2023Q314268.1M$1.56B
2023Q211566.2M$1.09B
2023Q112560.3M$1.08B
2022Q411562.3M$1.81B
2022Q310159.5M$1.45B
2022Q29045.9M$191M
Largest reported holders, 2026Q1
HolderShares% of companyValue
RA CAPITAL MANAGEMENT, L.P.6.7M9.8%$580M
VANGUARD GROUP INC6.5M9.6%$568M
BlackRock Inc.6.2M9.2%$542M
BAKER BROS. ADVISORS LP5.6M8.2%$487M
PRIMECAP MANAGEMENT CO/CA/3.4M5.0%$297M
PERCEPTIVE ADVISORS LLC2.4M3.5%$206M
STATE STREET CORP2.3M3.3%$198M
GOLDMAN SACHS GROUP INC2.0M2.9%$171M
WESTFIELD CAPITAL MANAGEMENT CO LP1.9M2.8%$168M
FMR LLC1.7M2.5%$147M

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.

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