| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| VANGUARD GROUP INC | 10% | $334,462,497 | 3,136,370 | The Vanguard Group | 31 Dec 2024 | |||
| SANDS CAPITAL MANAGEMENT, LLC | 6.9% | $384,588,559 | 2,236,110 | SANDS CAPITAL MANAGEMENT, LLC | 30 Sep 2025 | |||
| Capital Research Global Investors | 4.7% | -33% | $204,843,092 | -$94,581,343 | 1,506,864 | -32% | Capital Research Global Investors | 30 Jun 2025 |
As of 30 Sep 2025, 330 institutional investors reported holding 34,668,124 shares of iRhythm Technologies, Inc. - Common Stock, par value $0.001 per share (IRTC). This represents 107% of the company’s total 32,407,391 outstanding shares.
The largest institutional shareholders of iRhythm Technologies, Inc. - Common Stock, par value $0.001 per share (IRTC) together control 70% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| VANGUARD GROUP INC | 10% | 3,240,099 | +0.14% | 0.01% | $557,264,627 |
| BlackRock, Inc. | 8.9% | 2,875,476 | +4.6% | 0.01% | $494,553,075 |
| Artisan Partners Limited Partnership | 7.9% | 2,567,513 | -6.3% | 0.63% | $441,586,561 |
| SANDS CAPITAL MANAGEMENT, LLC | 6.9% | 2,236,110 | -23% | 1.1% | $384,588,559 |
| Capital Research Global Investors | 3.7% | 1,183,736 | -21% | 0.04% | $203,590,755 |
| STATE STREET CORP | 2.6% | 847,878 | -2.4% | 0.01% | $145,826,537 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.4% | 790,104 | +3% | 0.01% | $135,909,082 |
| BLAIR WILLIAM & CO/IL | 2.3% | 740,721 | +0.19% | 0.34% | $127,396,584 |
| EVENTIDE ASSET MANAGEMENT, LLC | 2.1% | 691,512 | -0.01% | 2% | $118,922,858 |
| FMR LLC | 1.9% | 624,095 | +49% | 0.01% | $107,338,156 |
| FULLER & THALER ASSET MANAGEMENT, INC. | 1.8% | 595,248 | +1.5% | 0.35% | $102,376,725 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1.8% | 570,254 | -22% | 0.25% | $98,078,000 |
| UBS AM, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS LLC | 1.8% | 570,062 | -6.2% | 0.02% | $98,044,962 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.7% | 541,039 | +6415% | 0.06% | $93,053,298 |
| Stephens Investment Management Group LLC | 1.6% | 519,958 | -6% | 1.2% | $89,427,576 |
| Holocene Advisors, LP | 1.5% | 473,280 | +51% | 0.19% | $81,399,427 |
| MACKENZIE FINANCIAL CORP | 1.4% | 455,261 | -38% | 0.09% | $78,300,339 |
| JPMORGAN CHASE & CO | 1.4% | 439,438 | -22% | 0% | $75,578,942 |
| BESSEMER GROUP INC | 1.3% | 434,235 | -24% | 0.11% | $74,683,000 |
| WELLINGTON MANAGEMENT GROUP LLP | 1.3% | 422,662 | +6.9% | 0.01% | $72,693,637 |
| Allspring Global Investments Holdings, LLC | 1.3% | 415,517 | -4.3% | 0.11% | $69,578,322 |
| Invesco Ltd. | 1.2% | 403,137 | +328% | 0.01% | $69,335,533 |
| BANK OF AMERICA CORP /DE/ | 1.2% | 375,788 | +8.1% | 0% | $64,631,778 |
| Champlain Investment Partners, LLC | 1.1% | 365,627 | -45% | 0.47% | $62,884,188 |
| Point72 Asset Management, L.P. | 1.1% | 348,112 | +8.1% | 0.13% | $59,871,835 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 243,573 | $43,231,718 | +$24,996,447 | $177.44 | 11 |
| 2025 Q3 | 34,668,124 | $5,960,127,354 | -$103,880,597 | $171.99 | 330 |
| 2025 Q2 | 35,390,889 | $5,441,652,911 | -$82,751,717 | $153.96 | 301 |
| 2025 Q1 | 35,983,114 | $3,768,006,864 | +$183,883,851 | $104.68 | 254 |
| 2024 Q4 | 34,327,817 | $3,094,792,701 | +$24,985,709 | $90.17 | 226 |
| 2024 Q3 | 34,300,712 | $2,546,184,989 | -$113,241,307 | $74.24 | 240 |
| 2024 Q2 | 35,528,920 | $3,823,722,858 | +$145,294,737 | $107.64 | 227 |
| 2024 Q1 | 34,502,287 | $4,002,590,157 | +$189,963,417 | $116.00 | 251 |
| 2023 Q4 | 32,945,986 | $3,526,898,502 | -$20,629,057 | $107.04 | 222 |
| 2023 Q3 | 33,182,374 | $3,120,212,405 | -$15,033,608 | $94.26 | 223 |
| 2023 Q2 | 33,299,268 | $3,474,118,901 | -$48,486,102 | $104.32 | 201 |
| 2023 Q1 | 33,708,853 | $4,180,854,132 | +$324,314,586 | $124.03 | 208 |
| 2022 Q4 | 31,151,995 | $2,917,984,399 | -$5,898,665 | $93.67 | 204 |
| 2022 Q3 | 30,401,944 | $3,801,930,092 | +$14,889,346 | $125.28 | 228 |
| 2022 Q2 | 30,387,197 | $3,283,148,343 | +$4,234,235 | $108.03 | 234 |
| 2022 Q1 | 30,296,272 | $4,768,481,076 | +$216,728,151 | $157.47 | 215 |
| 2021 Q4 | 29,128,389 | $3,428,231,271 | +$107,786,048 | $117.69 | 208 |
| 2021 Q3 | 28,055,658 | $1,643,173,747 | -$57,734,125 | $58.56 | 180 |
| 2021 Q2 | 29,024,558 | $1,925,764,915 | -$499,916,095 | $66.35 | 174 |
| 2021 Q1 | 31,071,273 | $4,314,496,144 | -$544,239,396 | $138.86 | 207 |
| 2020 Q4 | 33,270,792 | $7,891,976,678 | +$487,856,041 | $237.21 | 227 |
| 2020 Q3 | 31,198,367 | $7,423,363,500 | +$109,682,337 | $238.11 | 230 |
| 2020 Q2 | 30,796,747 | $3,570,869,382 | -$118,374,619 | $115.89 | 191 |
| 2020 Q1 | 32,167,984 | $2,614,776,733 | -$40,915,934 | $81.35 | 163 |
| 2019 Q4 | 32,792,937 | $2,232,625,135 | +$79,015,792 | $68.09 | 166 |
| 2019 Q3 | 31,381,095 | $2,324,687,781 | +$169,769,739 | $74.11 | 164 |
| 2019 Q2 | 29,027,393 | $2,291,930,032 | +$175,287,111 | $79.08 | 167 |
| 2019 Q1 | 27,606,512 | $2,068,176,987 | +$103,726,376 | $74.96 | 173 |
| 2018 Q4 | 25,626,800 | $1,780,395,960 | +$69,521,673 | $69.48 | 157 |
| 2018 Q3 | 24,484,484 | $2,317,685,444 | -$12,892,572 | $94.66 | 156 |
| 2018 Q2 | 24,692,685 | $2,003,316,162 | +$56,732,861 | $81.13 | 140 |
| 2018 Q1 | 24,070,462 | $1,515,219,109 | +$112,098,945 | $62.95 | 140 |
| 2017 Q4 | 23,147,057 | $1,297,363,838 | +$39,438,043 | $56.05 | 116 |
| 2017 Q3 | 22,474,419 | $1,165,964,085 | +$71,946,533 | $51.88 | 104 |
| 2017 Q2 | 21,196,604 | $900,386,225 | +$354,806,954 | $42.49 | 99 |
| 2017 Q1 | 13,123,148 | $493,429,902 | +$123,331,655 | $37.60 | 64 |
| 2016 Q4 | 10,566,406 | $316,969,000 | +$316,647,000 | $30.00 | 66 |