IRHYTHM TECHNOLOGIES INC (IRTC) Institutional Ownership Changes & 13F Activity

IRHYTHM TECHNOLOGIES INC (IRTC). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Artisan Partners Limited Partnership, Rtw Investments, Lp, Millennium Management Llc, Blair William & Co/Il, and Holocene Advisors, Lp.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Ensign Peak Advisors, IncBuy+8,046+31.1%33,939$6.02MQ4 2025Aug 18, 2026
Algert Global LlcSell-43,521-54.6%36,209$6.42MQ4 2025Aug 11, 2026
Hsbc Holdings PlcBuy+17,024—17,024$3.05MQ4 2025Mar 06, 2026
Midfirst BankBuy+1,326—1,326$235.28KQ4 2025Feb 25, 2026
Bell Investment Advisors, IncBuy+13—13$2.31KQ4 2025Feb 24, 2026
Sunbelt Securities, Inc.Buy+4—4$710.00Q4 2025Feb 20, 2026
Corient Private Wealth LlcBuy+1,764—1,764$313.08KQ4 2025Feb 19, 2026
Mackenzie Financial CorpBuy+347,304—347,304$61.90MQ4 2025Feb 18, 2026
Raymond James Financial IncBuy+153,806—153,806$27.43MQ4 2025Feb 18, 2026
Vident Advisory, LlcBuy+2,292—2,292$406.69KQ4 2025Feb 18, 2026
Newedge Advisors, LlcBuy+10—10$1.77KQ4 2025Feb 18, 2026
Artisan Partners Limited PartnershipBuy+1,511,992—1,511,992$268.29MQ4 2025Feb 17, 2026
Rtw Investments, LpBuy+1,181,990—1,181,990$209.73MQ4 2025Feb 17, 2026
Millennium Management LlcBuy+826,376—826,376$146.63MQ4 2025Feb 17, 2026
Blair William & Co/IlBuy+718,797—718,797$127.54MQ4 2025Feb 17, 2026
Holocene Advisors, LpBuy+683,568—683,568$121.29MQ4 2025Feb 17, 2026
Fmr LlcBuy+628,766—628,766$111.57MQ4 2025Feb 17, 2026
Price T Rowe Associates IncBuy+502,120—502,120$89.10MQ4 2025Feb 17, 2026
Wellington Management Group LlpBuy+408,256—408,256$72.44MQ4 2025Feb 17, 2026
D. E. Shaw & Co., Inc.Buy+360,669—360,669$64.00MQ4 2025Feb 17, 2026
Bank Of America CorpBuy+354,770—354,770$62.95MQ4 2025Feb 17, 2026
Fred Alger Management, LlcBuy+310,582—310,582$55.11MQ4 2025Feb 17, 2026
Polar Capital Holdings PlcBuy+308,100—308,100$54.67MQ4 2025Feb 17, 2026
Northern Trust CorpBuy+279,070—279,070$49.52MQ4 2025Feb 17, 2026
Driehaus Capital Management LlcBuy+267,968—267,968$47.55MQ4 2025Feb 17, 2026
Rock Springs Capital Management LpBuy+235,000—235,000$41.70MQ4 2025Feb 17, 2026
Point72 Asset Management, L.P.Buy+219,468—219,468$38.94MQ4 2025Feb 17, 2026
Braidwell LpBuy+217,345—217,345$38.57MQ4 2025Feb 17, 2026
Balyasny Asset Management L.P.Buy+167,274—167,274$29.68MQ4 2025Feb 17, 2026
First Light Asset Management, LlcBuy+153,871—153,871$27.30MQ4 2025Feb 17, 2026
Showing 30 of 322

Frequently asked questions about IRTC activity

  • Which institutional owners are buying IRTC?

    Institutional owners buying IRTC include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in IRTC activity?

    "Buy" means an investor increased their reported position in IRTC compared to the prior reporting period. This reflects growing exposure to IRHYTHM TECHNOLOGIES INC (IRTC) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in IRTC increasing?

    Institutional interest in IRTC can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.