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iRhythm Technologies, Inc. (IRTC) institutional ownership

Market cap$5.3B SectorHealthcare
Funds holding · Q1 2026
318
reported IRTC position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
148 buyers · 170 sellers

iRhythm Technologies, Inc. (IRTC) price and institutional activity

Dates

Q1 2026

$0 bought by 148 investors
Millennium Management LLCFMR LLC +146 more
$0 sold by 170 investors
Sands Capital Management, LLCCapital Research Global Investors +168 more
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Bought Sold Totals per quarter; hover a bar for the names.

iRhythm Technologies, Inc. (IRTC) institutional activity · 318

Investor Type Est. change Change Δ Own Date
Sands Capital Management, LLC · Exited
Change −1.7M Δ Own −100.0% Date Q1 2026
Sands Capital Management, LLC Exited· Q1 2026 −1.7M −100.0% Q1 2026
Millennium Management LLC · Added
Change +782K Date Q1 2026
Millennium Management LLC Added· Q1 2026 +782K Q1 2026
FMR LLC · Added
Change +733K Δ Own +116.6% Date Q1 2026
FMR LLC Added· Q1 2026 +733K +116.6% Q1 2026
Capital Research Global Investors · Reduced
Change −675K Δ Own −57.0% Date Q1 2026
Capital Research Global Investors Reduced· Q1 2026 −675K −57.0% Q1 2026
Holocene Advisors, LP · Added
Change +565K Date Q1 2026
Holocene Advisors, LP Added· Q1 2026 +565K Q1 2026
Rtw Investments, LP · Added
Change +487K Date Q1 2026
Rtw Investments, LP Added· Q1 2026 +487K Q1 2026
T. Rowe Price Associates · Reduced
Change −466K Date Q1 2026
T. Rowe Price Associates Reduced· Q1 2026 −466K Q1 2026
Braidwell LP · Added
Change +393K Date Q1 2026
Braidwell LP Added· Q1 2026 +393K Q1 2026
Point72 Asset Management, L.P. · Added
Change +380K Δ Own +173.1% Date Q1 2026
Point72 Asset Management, L.P. Added· Q1 2026 +380K +173.1% Q1 2026
Westfield Capital Management Co LP · Exited
Change −325K Δ Own −100.0% Date Q1 2026
Westfield Capital Management Co LP Exited· Q1 2026 −325K −100.0% Q1 2026
Bessemer Group Inc · Reduced
Change −320K Date Q1 2026
Bessemer Group Inc Reduced· Q1 2026 −320K Q1 2026
Wellington Management Group LLP · Reduced
Change −318K Δ Own −77.8% Date Q1 2026
Wellington Management Group LLP Reduced· Q1 2026 −318K −77.8% Q1 2026
Lord, Abbett & Co. LLC · Exited
Change −277K Δ Own −100.0% Date Q1 2026
Lord, Abbett & Co. LLC Exited· Q1 2026 −277K −100.0% Q1 2026
Driehaus Capital Management LLC · Exited
Change −268K Δ Own −100.0% Date Q1 2026
Driehaus Capital Management LLC Exited· Q1 2026 −268K −100.0% Q1 2026
UBS AM · Added
Change +218K Date Q1 2026
UBS AM Added· Q1 2026 +218K Q1 2026
Data through Q1 2026 · filed Jun 3, 2026
15 of 318

Famous investor activity in iRhythm Technologies, Inc. (IRTC)

iRhythm Technologies, Inc. (IRTC) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Turakhia Minang · Officer Sell −$177K
Price $124.71 Qty −1K Owned 54K ΔOwn −2.6% Trade date Jul 2, 2026 Filed date Jul 6, 2026
Turakhia Minang Officer Sell $124.71 −1K −$177K 54K −2.6% Jul 2, 2026 Jul 6, 2026
Freeman Sean Clinton · Officer Sell −$114K
Price $124.71 Qty −918 Owned 14K ΔOwn −6.3% Trade date Jul 2, 2026 Filed date Jul 6, 2026
Freeman Sean Clinton Officer Sell $124.71 −918 −$114K 14K −6.3% Jul 2, 2026 Jul 6, 2026
Shrishrimal Sumi · Officer Sell −$186K
Price $108.19 Qty −2K Owned 40K Trade date Jun 2, 2026 Filed date Jun 3, 2026
Shrishrimal Sumi Officer Sell $108.19 −2K −$186K 40K Jun 2, 2026 Jun 3, 2026
Rosenbaum Marc Wade · Officer Sell −$79K
Price $108.19 Qty −729 Owned 16K Trade date Jun 2, 2026 Filed date Jun 3, 2026
Rosenbaum Marc Wade Officer Sell $108.19 −729 −$79K 16K Jun 2, 2026 Jun 3, 2026
Shrishrimal Sumi · Officer Grant (A) $13K
Price $96.81 Qty 133 Owned 42K Trade date May 29, 2026 Filed date Jun 3, 2026
Shrishrimal Sumi Officer Grant (A) $96.81 133 $13K 42K May 29, 2026 Jun 3, 2026
Rosenbaum Marc Wade · Officer Grant (A) $17K
Price $96.81 Qty 178 Owned 17K Trade date May 29, 2026 Filed date Jun 3, 2026
Rosenbaum Marc Wade Officer Grant (A) $96.81 178 $17K 17K May 29, 2026 Jun 3, 2026
Turakhia Minang · Officer Grant (A) $13K
Price $96.81 Qty 137 Owned 55K Trade date May 29, 2026 Filed date Jun 1, 2026
Turakhia Minang Officer Grant (A) $96.81 137 $13K 55K May 29, 2026 Jun 1, 2026
Patterson Chad · Officer Grant (A) $17K
Price $96.82 Qty 177 Owned 58K Trade date May 29, 2026 Filed date Jun 1, 2026
Patterson Chad Officer Grant (A) $96.82 177 $17K 58K May 29, 2026 Jun 1, 2026
Freeman Sean Clinton · Officer Grant (A) $26K
Price $96.81 Qty 273 Owned 15K Trade date May 29, 2026 Filed date Jun 1, 2026
Freeman Sean Clinton Officer Grant (A) $96.81 273 $26K 15K May 29, 2026 Jun 1, 2026
Blackford Quentin S. · Director Grant (A) $17K
Price $96.81 Qty 178 Owned 204K Trade date May 29, 2026 Filed date Jun 1, 2026
Blackford Quentin S. Director Grant (A) $96.81 178 $17K 204K May 29, 2026 Jun 1, 2026
Bairey Merz Cathleen Noel · Director Grant (A) 2K
Owned 11K Trade date May 27, 2026 Filed date May 29, 2026
Bairey Merz Cathleen Noel Director Grant (A) 2K 11K May 27, 2026 May 29, 2026
Bodaken Bruce G. · Director Grant (A) 2K
Owned 14K Trade date May 27, 2026 Filed date May 29, 2026
Bodaken Bruce G. Director Grant (A) 2K 14K May 27, 2026 May 29, 2026
Ling Karen · Director Grant (A) 2K
Owned 11K Trade date May 27, 2026 Filed date May 29, 2026
Ling Karen Director Grant (A) 2K 11K May 27, 2026 May 29, 2026
McGinnis Karen K. · Director Grant (A) 2K
Owned 4K Trade date May 27, 2026 Filed date May 29, 2026
McGinnis Karen K. Director Grant (A) 2K 4K May 27, 2026 May 29, 2026
Oboyle Kevin C. · Director Grant (A) 2K
Owned 4K Trade date May 27, 2026 Filed date May 29, 2026
Oboyle Kevin C. Director Grant (A) 2K 4K May 27, 2026 May 29, 2026
15 of 80
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iRhythm Technologies, Inc. (IRTC) activist and large shareholders

What are Schedules 13D and 13G?

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Vanguard Group Inc 3.0M
% of shares outstanding 9.8% Filing date Feb 13, 2024
Vanguard Group Inc 3.0M 9.8% Feb 13, 2024
Artisan Partners Limited Partnership 2.8M
% of shares outstanding 8.9% Filing date Nov 12, 2024
Artisan Partners Limited Partnership 2.8M 8.9% Nov 12, 2024
BlackRock Inc. 2.5M
% of shares outstanding 8.1% Filing date Jan 25, 2024
BlackRock Inc. 2.5M 8.1% Jan 25, 2024
Capital Research Global Investors 2.0M
% of shares outstanding 6.3% Filing date Nov 12, 2024
Capital Research Global Investors 2.0M 6.3% Nov 12, 2024
Vanguard Portfolio Management 1.8M
% of shares outstanding 5.6% Filing date Apr 28, 2026
Vanguard Portfolio Management 1.8M 5.6% Apr 28, 2026
Vanguard Capital Management 1.7M
% of shares outstanding 5.2% Filing date Apr 27, 2026
Vanguard Capital Management 1.7M 5.2% Apr 27, 2026
Rtw Investments, LP 1.7M
% of shares outstanding 5.2% Filing date May 15, 2026
Rtw Investments, LP 1.7M 5.2% May 15, 2026
Mackenzie Financial Corp 1.2M
% of shares outstanding 4.1% Filing date Jan 27, 2023
Mackenzie Financial Corp 1.2M 4.1% Jan 27, 2023
8 of 12

iRhythm Technologies, Inc. (IRTC) ownership FAQ

Who owns IRTC?

318 reporting institutions disclosed IRTC position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.