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Rhythm Pharmaceuticals RYTM

US equityMarket cap rank #1858
$92.45 −$0.38 (-0.41%)
Market closed · Oct 5, 8:10 pm ET · Last extended-hours $92.45 0.00%
Open$93.95
Prev close$92.83
Day range$89.53 – $94.41
Volume1.03M
Market cap$6.37B
P/E (TTM)–
Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Short interest14.94% of floatDays to cover 20.1 · as of 15 Sep 2026
Short-sale volume share19.7%5-day average of daily volume

Short-sale volume as % of daily volume

13%18%22%27%Sep '26Sep '26Oct '26

Reported short interest has risen from 14.09% to 14.94% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 10,287,811 14.9% 20.1
31 Aug 2026 10,303,031 15.0% 21.9
14 Aug 2026 10,154,327 14.7% 12.2
31 Jul 2026 9,440,417 13.8% 16.2
15 Jul 2026 9,574,527 14.0% 13.7
30 Jun 2026 9,665,089 14.1% 7.6

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