iRhythm Technologies Short Interest Rises 20.1% in February

Approximately 10.6% of the company's stock are now sold short.

Published on Mar. 4, 2026

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iRhythm Technologies (NASDAQ:IRTC) saw a significant increase in short interest during the month of February, with short interest totaling 3,401,218 shares as of February 13th - a 20.1% jump from the January 29th total of 2,830,877 shares. This represents approximately 10.6% of the company's outstanding stock.

Why it matters

The rise in short interest could signal growing investor skepticism about iRhythm's prospects, as short sellers bet against the stock's performance. This comes as the company navigates a shifting analyst landscape, with some firms trimming price targets even as they maintain buy ratings.

The details

Based on an average daily trading volume of 665,249 shares, the current short interest ratio stands at 5.1 days, meaning it would take short sellers about 5 days to cover their positions at the current pace of trading. The increase in short interest follows a period of volatility for iRhythm's stock, which has traded in a range between $92.52 and $212.00 over the past 52 weeks.

  • As of February 13th, 2026, short interest in iRhythm Technologies totaled 3,401,218 shares.
  • This represents a 20.1% increase from the January 29th, 2026 short interest total of 2,830,877 shares.

The players

iRhythm Technologies

An American medical technology company that develops and commercializes wearable cardiac monitoring devices and associated data analytics services.

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The takeaway

The rise in short interest in iRhythm Technologies could signal growing investor skepticism about the company's prospects, even as it navigates a shifting analyst landscape. This bears watching as the company seeks to maintain its growth trajectory.