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Who owns iRhythm Holdings (IRTC) stock

282 funds reported iRhythm Holdings (IRTC) shares in their latest 13F filings, worth $4.6B in all. The largest holder is Vanguard Group ($587M). Last quarter 139 funds added to their stakes and 121 cut them.

Largest holders of IRTC (13F)Largest holders of IRTC (13F)Vanguard Group$587MBlackRock$355MRTW Investments, LP$260MVanguard Portfolio Management LLC$228MArtisan Partners Limited Partners…$197MVanguard Capital Management LLC$174MMillennium Management LLC$167MFMR LLC$142MUBS AM, a distinct business unit …$112MGeode Capital Management, LLC$105M

Largest holders (13F)

FundSharesValueChangeQuarter
Vanguard Group3,310,519$587Mincrease2025-12-31
BlackRock2,985,667$355Mincrease2026-06-30
RTW Investments, LP2,182,631$260Mincrease2026-06-30
Vanguard Portfolio Management LLC1,913,976$228Mincrease2026-06-30
Artisan Partners Limited Partnership1,660,307$197Mincrease2026-06-30
Vanguard Capital Management LLC1,463,211$174Mincrease2026-06-30
Millennium Management LLC1,406,454$167Mdecrease2026-06-30
FMR LLC1,191,982$142Mdecrease2026-06-30
UBS AM, a distinct business unit of UBS Asset Management Americas LLC944,517$112Mdecrease2026-06-30
Geode Capital Management, LLC881,899$105Mincrease2026-06-30
Eventide Asset Management, LLC880,338$105Mincrease2026-06-30
BNP Paribas Asset Management Holding S.A.866,528$103Mincrease2026-06-30
State Street856,517$102Mincrease2026-06-30
Holocene Advisors, LP783,636$93.2Mdecrease2026-06-30
Stephens Investment Management Group LLC693,437$82.5Mincrease2026-06-30

iRhythm Holdings' latest quarter

iRhythm Holdings, Q3 2026: revenue $222M (+15% year over year), operating margin -14.7%, net loss $29.9M, operating cash flow $4.4M. The chart follows the revenue to costs, profit and cash.

Questions

Who owns the most IRTC stock?

By the latest 13F filings: Vanguard Group ($587M); BlackRock ($355M); RTW Investments, LP ($260M); Vanguard Portfolio Management LLC ($228M); Artisan Partners Limited Partnership ($197M).

What is the short interest in IRTC?

3,096,052 shares were sold short at the 2026-10-15 settlement, 2.07% 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.