BeStock  
Stocks › IRTC

iRhythm Technologies IRTC

US equityMarket cap rank #2359
$109.09 −$1.28 (-1.16%)
Market closed · Oct 5, 10:20 pm ET · Last extended-hours $109.09 0.00%
Open$110.20
Prev close$110.37
Day range$106.77 – $111.37
Volume626.3K
Market cap$3.60B
P/E (TTM)–
Dividend yield–

Ownership & positioning

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

Institutional ownership109.8%-0.12 pts vs. prior quarter
Institutions holding376+2 vs. prior quarter
Insider trades (recent)23 buys / 26 sellsNet selling
Short interest9.27% of floatDays to cover 5.6 · as of 15 Sep 2026
Short-sale volume share20.0%5-day average of daily volume

Short-sale volume as % of daily volume

8%15%21%27%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: +$19.64M (6 inflow days, 14 outflow days).

The five largest holders on file together own 31.7% of shares outstanding.

Largest holders

  • BlackRock9.06%
  • RTW Investments, LP6.62%
  • Vanguard Portfolio Management, LLC5.81%
  • Vanguard Capital Management, LLC5.15%
  • Artisan Partners Limited Partnership5.04%
  • Millennium Management LLC4.27%
  • FMR3.62%
  • UBS Asset Management3.10%

By investor type

  • Mutual Fund79.22%
  • Hedge Fund22.17%
  • Public Company4.41%
  • Private Company1.65%
  • Individual/Insider1.50%
  • Government Pension Fund0.87%
  • VC/PE Fund0.68%
  • Sovereign Wealth Fund0.45%

Reported short interest has fallen from 9.85% to 9.27% 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 3,054,907 9.3% 5.6
31 Aug 2026 2,788,408 8.5% 5.6
14 Aug 2026 2,800,810 8.5% 3.3
31 Jul 2026 3,212,594 9.8% 6.6
15 Jul 2026 3,430,153 10.4% 5.8
30 Jun 2026 3,236,975 9.9% 4.6

Discussion

No comments yet — be the first to weigh in on IRTC.

Leave a comment

Scroll to Top