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iRhythm Holdings, Inc.

IRTC
Exchange
Nasdaq
Industry
Surgical & Medical Instruments & Apparatus
SEC CIK
0001388658

In the last 90 days, iRhythm Holdings, Inc. insiders filed 0 open-market purchases and 11 sales; 304 institutions reported holding it in 13F filings for Q2 2026, worth $4.24B in total; no superinvestor holds it.

Q4 2025 vs. Q3 2025

How the institutions holding iRhythm Holdings, Inc. changed between Q3 2025 and Q4 2025.

All holders in Q4 2025All holders in Q3 2025

13F holders of IRTC: Q3 2025 compared with Q4 2025
MeasureQ3 2025Of which not filed for Q4 2025Q4 2025Change
Holders3387335+4
Shares34.7M140.9K35.2M+613.4K (+1.8%)
Value$5.97B$24.2M$6.24B+$298.8M (+5.0%)

7 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (46)

Institutions that held iRhythm Holdings, Inc. at the end of Q4 2025 but not at the end of Q3 2025.

Institutions new to IRTC in Q4 2025
InstitutionSharesValue% of portfolio
RTW Investments, LP1,181,990$209.7M2.10%
Balyasny Asset Management LLC167,274$29.7M0.06%
Freestone Grove Partners LP63,140$11.2M0.08%
Norges Bank56,237$9.98M0.00%
Nomura Asset Management International Inc.39,747$7.05M0.01%
KCM Capital Inc37,000$6.57M1.32%
EFG International AG26,643$4.73M0.09%
Hussman Strategic Advisors, Inc.14,700$2.61M0.63%
Bridgewater Associates, LP11,348$2.01M0.01%
Pinnacle Financial Partners, Inc.7,145$1.27M0.01%
Laird Norton Trust Company, LLC6,824$1.21M0.03%
Headlands Technologies LLC6,685$1.19M0.10%
XTX Topco Ltd4,816$854.6K0.02%
Susquehanna International Group, LLP4,759$844.4K0.00%
Acadian Asset Management LLC4,034$714.0K0.00%
Sumitomo Mitsui Trust Holdings, Inc.2,350$417.0K0.00%
CIBC World Markets Corp2,110$374.4K0.00%
Quent Capital, LLC2,000$354.9K0.03%
Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna1,600$283.9K0.11%
Great Lakes Advisors, LLC1,566$277.9K0.00%
MidFirst Bank1,326$235.3K0.02%
Boothbay Fund Management, LLC1,304$231.4K0.01%
PharVision Advisers, LLC1,292$229.3K0.12%
Abacus Wealth Partners, LLC1,269$225.2K0.02%
Valeo Financial Advisors, LLC1,180$209.4K0.00%
Kovack Advisors, Inc.1,171$207.8K0.01%
M&T Bank Corp1,166$207.0K0.00%
Kestra Advisory Services, LLC400$71.0K0.00%
Torren Management, LLC301$53.4K0.03%
Kemnay Advisory Services Inc.106$18.8K0.00%
Quarry LP104$18.5K0.00%
Pinnacle Wealth Planning Services, Inc.86$15.3K0.00%
Elequin Capital LP85$15.1K0.00%
Basecamp Wealth Advisors LLC59$10.5K0.00%
Ares Financial Consulting, LLC25$4.44K0.00%
Elyxium Wealth, LLC22$3.90K0.00%
International Assets Investment Management, LLC8$1.42K0.00%
Keating Financial Advisory Services, Inc.6$1.06K0.00%
MAI Capital Management5$8880.00%
Central Trust Co4$7100.00%
DV Trading LLC4$7100.00%
Godfrey Financial Associates, Inc.3$5320.00%
SJS Investment Consulting Inc.2$3550.00%
Cornerstone Planning Group LLC2$3040.00%
Signature Equity Partners, LLC1$1770.00%
Dunhill Financial, LLC1$1240.00%

Sold out (42)

Institutions that held iRhythm Holdings, Inc. at the end of Q3 2025 and filed for Q4 2025 without it.

Institutions that sold out of IRTC in Q4 2025
InstitutionShares, Q3 2025Value, Q3 2025
Champlain Investment Partners, LLC365,627$62.9M
PFM Health Sciences, LP64,998$11.2M
Macquarie Group Ltd51,421$8.84M
1832 Asset Management L.P.28,200$4.85M
Susquehanna Fundamental Investments, LLC27,893$4.80M
Ossiam27,100$4.66M
Voloridge Investment Management, LLC19,142$3.29M
Aquatic Capital Management LLC13,327$2.29M
Numerai GP LLC9,225$1.59M
Citadel Advisors LLC8,892$1.53M
Fieldview Capital Management, LLC8,182$1.41M
Calamos Advisors LLC7,494$1.29M
CWM Advisors, LLC6,055$1.04M
Dimensional Fund Advisors LP5,387$926.5K
Bayesian Capital Management, LP4,386$754.3K
Diversified Trust Co4,245$730.1K
Teacher Retirement System of Texas4,177$718.4K
Two Sigma Securities, LLC3,588$617.1K
Nomura Holdings Inc3,302$567.9K
Counterpoint Mutual Funds LLC2,900$498.8K
O'Neil Global Advisors, Inc.2,718$467.0K
Voleon Capital Management LP2,192$377.0K
Two Sigma Investments, LP2,100$361.2K
HighTower Advisors, LLC1,678$288.6K
Prelude Capital Management, LLC1,671$287.4K
CI Private Wealth, LLC1,573$270.5K
Gsa Capital Partners LLP1,516$261.0K
Quadrature Capital Ltd1,406$241.5K
Bridgefront Capital, LLC1,383$237.9K
Stifel Financial Corp1,297$223.1K
111 Capital1,272$218.8K
Picton Mahoney Asset Management1,250$215.0K
Stratos Wealth Partners, LTD.1,203$206.9K
Walleye Trading LLC967$166.3K
Skandinaviska Enskilda Banken AB (publ)589$101.3K
Simplex Trading, LLC362$62.0K
FNY Investment Advisers, LLC200$34.0K
Rise Advisors, LLC69$11.9K
Halbert Hargrove Global Advisors, LLC18$3.10K
Tortoise Investment Management, LLC7$1.20K
Advisory Services Network, LLC6$1.03K
Wealthspire Advisors, LLC1$172

Not filed for Q4 2025 yet (7)

Institutions that held iRhythm Holdings, Inc. at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding IRTC in Q3 2025 that haven't filed for Q4 2025
InstitutionShares, Q3 2025Value, Q3 2025
Cubist Systematic Strategies, LLC89,220$15.3M
EFG Asset Management (North America) Corp.30,967$5.32M
Synovus Financial Corp8,029$1.38M
Wetherby Asset Management Inc6,742$1.16M
CIBC Bancorp USA Inc.3,400$584.8K
Point72 (DIFC) Ltd2,160$371.4K
Point72 Europe (London) LLP377$64.8K