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; 303 institutions reported holding it in 13F filings for Q2 2026, worth $4.24B in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in iRhythm Holdings, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 305
- −24 vs. Q4 2025
- Shares held
- 35.5M
- +3.74M (+11.8%) vs. Q4 2025
- Total value
- $4.19B
- −$1.45B (−25.6%) vs. Q4 2025
- New holders
- 45
- 112 more added
- Sold out
- 69
- 105 more reduced
6 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting IRTC on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 303 | $4.24B |
| Q1 2026 | 305 | $4.19B |
| Q4 2025 | 335 | $6.24B |
| Q3 2025 | 338 | $5.97B |
| Q2 2025 | 304 | $5.44B |
| Q1 2025 | 256 | $3.77B |
| Q4 2024 | 227 | $3.09B |
| Q3 2024 | 242 | $2.55B |
| Q2 2024 | 228 | $3.82B |
| Q1 2024 | 253 | $4.00B |
| Q4 2023 | 222 | $3.53B |
| Q3 2023 | 224 | $3.12B |
| Q2 2023 | 203 | $3.47B |
| Q1 2023 | 209 | $4.18B |
| Q4 2022 | 208 | $2.92B |
| Q3 2022 | 233 | $3.81B |
| Q2 2022 | 242 | $3.28B |
| Q1 2022 | 222 | $4.78B |
| Q4 2021 | 213 | $3.43B |
| Q3 2021 | 186 | $1.64B |
| Q2 2021 | 183 | $1.93B |
| Q1 2021 | 217 | $4.33B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding iRhythm Holdings, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Hussman Strategic Advisors, Inc. | 29,400 | $3.47M | 0.75% | +14,700+100.0% | Added |
| EFG International AG | 29,460 | $3.48M | 0.07% | +2,817+10.6% | Added |
| Ensign Peak Advisors, Inc | 29,957 | $3.54M | 0.01% | −3,982−11.7% | Reduced |
| KCM Capital Inc | 30,000 | $3.54M | 0.66% | −7,000−18.9% | Reduced |
| Envestnet Asset Management Inc | 32,134 | $3.79M | 0.00% | +8,930+38.5% | Added |
| Verition Fund Management LLC | 34,565 | $4.08M | 0.04% | +14,965+76.4% | Added |
| AQR Capital Management LLC | 34,590 | $4.08M | 0.00% | −5,575−13.9% | Reduced |
| Sirios Capital Management L P | 34,744 | $4.10M | 0.50% | +34,744 | New |
| Hillsdale Investment Management Inc. | 34,950 | $4.12M | 0.11% | +900+2.6% | Added |
| Price T Rowe Associates Inc | 35,687 | $4.21M | 0.00% | −466,433−92.9% | Reduced |
| California State Teachers Retirement System | 37,324 | $4.40M | 0.00% | +6,763+22.1% | Added |
| Rhumbline Advisers | 39,422 | $4.65M | 0.00% | −1,188−2.9% | Reduced |
| Parkman Healthcare Partners LLC | 40,125 | $4.74M | 0.49% | +40,125 | New |
| Campbell & CO Investment Adviser LLC | 40,818 | $4.82M | 0.27% | +40,818 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 42,346 | $5.00M | 0.01% | +228+0.5% | Added |
| Jump Financial, LLC | 44,984 | $5.31M | 0.08% | +24,454+119.1% | Added |
| First Trust Advisors LP | 47,589 | $5.62M | 0.00% | −13,213−21.7% | Reduced |
| State of Wisconsin Investment Board | 48,050 | $5.67M | 0.01% | −3,103−6.1% | Reduced |
| Engineers Gate Manager LP | 49,269 | $5.81M | 0.07% | −27,850−36.1% | Reduced |
| Amundi | 49,575 | $5.85M | 0.00% | +16,165+48.4% | Added |
| Legal & General Group Plc | 51,569 | $6.09M | 0.00% | −501−1.0% | Reduced |
| Two Sigma Investments, LP | 52,600 | $6.21M | 0.01% | +52,600 | New |
| HealthInvest Partners AB | 22,322 | $6.26M | 2.02% | −15,257−40.6% | Reduced |
| Principal Financial Group Inc | 53,476 | $6.31M | 0.00% | −15,945−23.0% | Reduced |
| Renaissance Technologies LLC | 53,800 | $6.35M | 0.01% | −50,100−48.2% | Reduced |
| Alliancebernstein L.P. | 36,299 | $6.44M | 0.00% | −1,190−3.2% | Reduced |
| Canada Pension Plan Investment Board | 58,800 | $6.94M | 0.00% | +28,700+95.3% | Added |
| Silvercrest Asset Management Group LLC | 61,681 | $7.28M | 0.05% | +13,783+28.8% | Added |
| Swiss National Bank | 63,700 | $7.52M | 0.00% | +300+0.5% | Added |
| Peregrine Capital Management LLC | 65,875 | $7.77M | 0.29% | +9,007+15.8% | Added |
| Frontier Capital Management Co LLC | 68,454 | $8.08M | 0.08% | −2,594−3.7% | Reduced |
| Thrivent Financial for Lutherans | 75,162 | $8.87M | 0.02% | +75,162 | New |
| Susquehanna Portfolio Strategies, LLC | 75,961 | $8.96M | 0.13% | +75,961 | New |
| C WorldWide Group Holding A/S | 80,000 | $9.44M | 0.20% | 00.0% | Unchanged |
| M&G Plc | 85,062 | $10.0M | 0.05% | +924+1.1% | Added |
| Schonfeld Strategic Advisors LLC | 88,133 | $10.4M | 0.08% | +76,875+682.8% | Added |
| Man Group plc | 88,210 | $10.4M | 0.02% | +32,008+57.0% | Added |
| Wellington Management Group LLP | 90,460 | $10.7M | 0.00% | −317,796−77.8% | Reduced |
| TimesSquare Capital Management, LLC | 90,652 | $10.7M | 0.18% | +30,830+51.5% | Added |
| UBS Group AG | 91,903 | $10.8M | 0.00% | −61,315−40.0% | Reduced |
| Granahan Investment Management Inc | 96,022 | $11.3M | 0.55% | +81,645+567.9% | Added |
| Segall Bryant & Hamill, LLC | 99,796 | $11.8M | 0.17% | −11,901−10.7% | Reduced |
| New York State Common Retirement Fund | 102,594 | $12.1M | 0.02% | −27,138−20.9% | Reduced |
| WCM Investment Management, LLC | 108,078 | $12.3M | 0.03% | +34,786+47.5% | Added |
| Perceptive Advisors LLC | 105,026 | $12.4M | 0.24% | −2,974−2.8% | Reduced |
| Bank of New York Mellon Corp | 107,789 | $12.7M | 0.00% | −4,330−3.9% | Reduced |
| Trexquant Investment LP | 111,311 | $13.1M | 0.10% | +32,658+41.5% | Added |
| Nuveen, LLC | 111,732 | $13.2M | 0.00% | −21,943−16.4% | Reduced |
| Jane Street Group, LLC | 112,864 | $13.3M | 0.01% | −79,527−41.3% | Reduced |
| Citadel Advisors LLC | 113,600 | $13.4M | 0.01% | +113,600 | New |
| Franklin Resources Inc | 121,558 | $14.3M | 0.00% | +2,980+2.5% | Added |
| Jennison Associates LLC | 137,040 | $16.2M | 0.01% | −2,019−1.5% | Reduced |
| Raymond James Financial Inc | 145,123 | $16.7M | 0.01% | −8,683−5.6% | Reduced |
| Federated Hermes, Inc. | 149,459 | $17.6M | 0.03% | +43,052+40.5% | Added |
| Oberweis Asset Management Inc | 156,004 | $18.4M | 0.54% | +36,304+30.3% | Added |
| Massachusetts Financial Services Co | 166,637 | $19.7M | 0.01% | +16,353+10.9% | Added |
| First Light Asset Management, LLC | 168,116 | $19.8M | 1.78% | +14,245+9.3% | Added |
| Next Century Growth Investors LLC | 169,306 | $20.0M | 1.45% | −3,532−2.0% | Reduced |
| Bamco Inc | 183,900 | $21.7M | 0.07% | +183,900 | New |
| Barclays PLC | 188,345 | $22.2M | 0.01% | −5,630−2.9% | Reduced |
| Balyasny Asset Management LLC | 194,429 | $22.9M | 0.05% | +27,155+16.2% | Added |
| SEI Investments Co | 198,904 | $23.5M | 0.02% | −4,451−2.2% | Reduced |
| Deutsche Bank AG | 215,758 | $25.5M | 0.01% | +28,097+15.0% | Added |
| Vanguard Fiduciary Trust Co | 223,699 | $26.4M | 0.01% | +223,699 | New |
| Qube Research & Technologies Ltd | 226,884 | $26.8M | 0.04% | +82,270+56.9% | Added |
| Citigroup Inc | 232,123 | $27.4M | 0.02% | +41,788+22.0% | Added |
| Ameriprise Financial Inc | 236,786 | $27.9M | 0.01% | +113,165+91.5% | Added |
| Morgan Stanley | 237,799 | $28.1M | 0.00% | +67,808+39.9% | Added |
| Schroder Investment Management Group | 247,746 | $28.3M | 0.02% | +85,693+52.9% | Added |
| Rock Springs Capital Management LP | 261,750 | $30.9M | 1.82% | +26,750+11.4% | Added |
| Assenagon Asset Management S.A. | 270,221 | $31.9M | 0.05% | +45,016+20.0% | Added |
| Fred Alger Management, LLC | 280,040 | $33.1M | 0.15% | −30,542−9.8% | Reduced |
| Charles Schwab Investment Management Inc | 281,897 | $33.3M | 0.01% | −4,227−1.5% | Reduced |
| Northern Trust Corp | 285,086 | $33.6M | 0.00% | +6,016+2.2% | Added |
| Invesco Ltd. | 297,452 | $35.1M | 0.00% | −200,933−40.3% | Reduced |
| Ophir Asset Management Pty Ltd | 335,807 | $39.6M | 4.62% | +208,110+163.0% | Added |
| Goldman Sachs Group Inc | 348,563 | $41.1M | 0.01% | +19,428+5.9% | Added |
| Loomis Sayles & Co L P | 367,894 | $43.4M | 0.06% | −24,183−6.2% | Reduced |
| Mackenzie Financial Corp | 371,475 | $43.8M | 0.05% | +24,171+7.0% | Added |
| Manufacturers Life Insurance Company, The | 390,577 | $46.1M | 0.04% | +194,502+99.2% | Added |
| Polar Capital Holdings Plc | 421,612 | $49.8M | 0.22% | +113,512+36.8% | Added |
| Bank of America Corp | 432,539 | $51.0M | 0.00% | +77,769+21.9% | Added |
| Allspring Global Investments Holdings, LLC | 467,113 | $55.2M | 0.09% | +59,704+14.7% | Added |
| Capital Research Global Investors | 509,590 | $60.1M | 0.01% | −675,156−57.0% | Reduced |
| D. E. Shaw & Co., Inc. | 554,266 | $65.4M | 0.05% | +193,597+53.7% | Added |
| Stephens Investment Management Group LLC | 561,530 | $66.3M | 0.91% | +42,205+8.1% | Added |
| Arrowstreet Capital, Limited Partnership | 582,879 | $68.8M | 0.04% | −24,090−4.0% | Reduced |
| Point72 Asset Management, L.P. | 599,405 | $70.7M | 0.12% | +379,937+173.1% | Added |
| Braidwell LP | 610,192 | $72.0M | 2.40% | +392,847+180.7% | Added |
| Blair William & Co | 628,385 | $74.2M | 0.21% | −90,412−12.6% | Reduced |
| Fuller & Thaler Asset Management, Inc. | 674,698 | $79.6M | 0.27% | +35,275+5.5% | Added |
| JPMorgan Chase & Co | 714,896 | $81.6M | 0.01% | −43,691−5.8% | Reduced |
| Eventide Asset Management, LLC | 760,825 | $89.8M | 1.48% | +68,339+9.9% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 762,062 | $89.9M | 0.10% | +179,048+30.7% | Added |
| State Street Corp | 788,302 | $93.0M | 0.00% | +23,463+3.1% | Added |
| Geode Capital Management, LLC | 817,110 | $96.5M | 0.01% | −41,295−4.8% | Reduced |
| UBS Asset Management Americas Inc | 1,047,452 | $123.6M | 0.03% | +217,590+26.2% | Added |
| Holocene Advisors, LP | 1,248,658 | $147.4M | 0.36% | +565,090+82.7% | Added |
| FMR LLC | 1,361,919 | $160.7M | 0.01% | +733,153+116.6% | Added |
| Vanguard Capital Management LLC | 1,445,710 | $170.6M | 0.00% | +1,445,710 | New |