Irhythm HoldingsIRTC
13F holders, Q4 2025 (December 31)335holders −3
32new positions
42sold out
7famous investors
$177.43avg. 13F price*
At the end of Q4 2025, 335 institutions reported holding Irhythm Holdings Inc. (IRTC) in their 13F filings, down 3 from Q3 2025. 32 opened new positions and 42 sold out. The largest holders were Vanguard Group Inc. ($587.4M), BlackRock, Inc. ($499.3M) and Sands Capital Management, LLC ($301.6M). 7 famous investors held it, including Israel Englander (0.1% of Millennium Management's portfolio), Steve Cohen (0.1% of Point72 Asset Management's portfolio) and David E. Shaw (0.1% of D. E. Shaw & Co.'s portfolio).
- Company
- Irhythm Holdings Inc.
- CUSIP
- 450056106
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 32 | $262.8M |
| Exits | 42 | $118.5M |
All 13F filers, Q3 2025 → Q4 2025: 4,565,838 shares bought and 4,123,070 shares sold, net +442,768 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 335 holders
| Vanguard Group Inc. | 0.01% | Add +2.2% | 3,310,519 | $587.4M |
| BlackRock, Inc. | 0.01% | Reduce -2.1% | 2,813,989 | $499.3M |
| Sands Capital Management, LLC | 0.92% | Reduce -24.0% | 1,699,645 | $301.6M |
| Artisan Partners Limited Partnership | 0.41% | Reduce -41.1% | 1,511,992 | $268.3M |
| Capital Research Global Investors | 0.04% | Add +0.1% | 1,184,746 | $210.2M |
| RTW Investments, LP | 2.10% | New | 1,181,990 | $209.7M |
| Geode Capital Management, LLC | 0.01% | Add +8.6% | 858,405 | $152.3M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.03% | Add +45.6% | 829,862 | $147.3M |
| Millennium Management | 0.11% | Add +197.4% | 826,376 | $146.6M |
| State Street Corp. | 0.00% | Reduce -9.8% | 764,839 | $135.7M |
| JPMorgan Chase & Co. | 0.01% | Add +72.6% | 758,587 | $134.6M |
| Blair William & Co. | 0.34% | Reduce -3.0% | 718,797 | $127.5M |
| Eventide Asset Management, LLC | 1.92% | Add +0.1% | 692,486 | $122.9M |
| Holocene Advisors, LP | 0.26% | Add +44.4% | 683,568 | $121.3M |
| Fuller & Thaler Asset Management, Inc. | 0.38% | Add +7.4% | 639,423 | $113.5M |
| FMR LLC | 0.01% | Add +0.8% | 628,766 | $111.6M |
| Arrowstreet Capital, Limited Partnership | 0.06% | Add +12.2% | 606,969 | $107.7M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.12% | Add +2.2% | 583,014 | $103.5M |
| Stephens Investment Management Group LLC | 1.20% | Reduce -0.1% | 519,325 | $92.1M |
| T. Rowe Price Associates Inc. | 0.01% | Add +47.8% | 502,120 | $89.1M |
| Invesco Ltd. | 0.01% | Add +23.6% | 498,385 | $88.4M |
| Wellington Management Group LLP | 0.01% | Reduce -3.4% | 408,256 | $72.4M |
| Allspring Global Investments Holdings, LLC | 0.12% | Reduce -1.9% | 407,409 | $71.4M |
| Loomis Sayles & Co. L P | 0.08% | Add +35.4% | 392,077 | $69.6M |
| D. E. Shaw & Co. | 0.05% | Add +7.0% | 360,669 | $64.0M |
| Bank of America Corp. | 0.00% | Reduce -5.6% | 354,770 | $63.0M |
| Mackenzie Financial Corp. | 0.07% | Reduce -23.7% | 347,304 | $61.9M |
| Goldman Sachs Group Inc. | 0.01% | Add +1.8% | 329,135 | $58.4M |
| Westfield Capital Management Co. LP | 0.24% | Add +0.3% | 325,063 | $57.7M |
| Bessemer Group Inc. | 0.09% | Reduce -25.9% | 321,984 | $57.1M |
| Fred Alger Management, LLC | 0.22% | Reduce -3.0% | 310,582 | $55.1M |
| Polar Capital Holdings Plc | 0.25% | Reduce -8.3% | 308,100 | $54.7M |
| Charles Schwab Investment Management Inc. | 0.01% | Reduce -0.2% | 286,124 | $50.8M |
| Northern Trust Corp. | 0.01% | Reduce -5.2% | 279,070 | $49.5M |
| Lord, Abbett & Co. LLC | 0.16% | Reduce -1.7% | 277,212 | $49.2M |
| Driehaus Capital Management LLC | 0.32% | Add +22.7% | 267,968 | $47.5M |
| Rock Springs Capital Management LP | 2.15% | No change | 235,000 | $41.7M |
| Assenagon Asset Management S.A. | 0.06% | Add +189.2% | 225,205 | $40.0M |
| Point72 Asset Management | 0.06% | Reduce -37.0% | 219,468 | $38.9M |
| Braidwell LP | 1.48% | Reduce -3.8% | 217,345 | $38.6M |
| Sei Investments Co. | 0.04% | Reduce -17.7% | 203,355 | $36.1M |
| Manufacturers Life Insurance Company, The | 0.03% | Add +0.4% | 196,075 | $34.8M |
| Barclays PLC | 0.01% | Add +3.9% | 193,975 | $34.4M |
| Jane Street Group, LLC | 0.04% | Add +108.1% | 192,391 | $34.1M |
| Citigroup Inc. | 0.02% | Add +21.7% | 190,335 | $33.8M |
| Deutsche Bank AG | 0.01% | Reduce -6.0% | 187,661 | $33.3M |
| Next Century Growth Investors LLC | 2.13% | Reduce -8.6% | 172,838 | $30.7M |
| Morgan Stanley | 0.00% | Add +9.8% | 169,991 | $30.2M |
| Balyasny Asset Management L.P. | 0.06% | New | 167,274 | $29.7M |
| Schroder Investment Management Group | 0.02% | Reduce -1.2% | 162,053 | $28.9M |
| Raymond James Financial Inc. | 0.01% | Reduce -9.1% | 153,806 | $27.4M |
| First Light Asset Management, LLC | 2.09% | Reduce -0.8% | 153,871 | $27.3M |
| UBS Group AG | 0.01% | Add +190.3% | 153,218 | $27.2M |
| Massachusetts Financial Services Co. | 0.01% | Reduce -6.4% | 150,284 | $26.7M |
| Qube Research & Technologies Ltd | 0.04% | Reduce -13.3% | 144,614 | $25.7M |
| Jennison Associates LLC | 0.01% | Reduce -11.6% | 139,059 | $24.7M |
| Nuveen, LLC | 0.01% | Reduce -38.3% | 133,675 | $23.7M |
| Integral Health Asset Management, LLC | 1.17% | Add +100.0% | 130,000 | $23.1M |
| New York State Common Retirement Fund | 0.03% | Reduce -22.5% | 129,732 | $23.0M |
| Ophir Asset Management Pty Ltd | 2.54% | Add +25.7% | 127,697 | $22.7M |
| Walleye Capital LLC | 0.14% | Add +33.0% | 127,596 | $22.6M |
| Adage Capital Partners Gp, L.L.C. | 0.03% | Add +150.0% | 125,000 | $22.2M |
| Ameriprise Financial Inc. | 0.01% | Reduce -10.0% | 123,621 | $21.9M |
| Oberweis Asset Management Inc./ | 0.78% | Add +47.4% | 119,700 | $21.2M |
| Franklin Resources Inc. | 0.01% | Add +869.5% | 118,578 | $21.0M |
| Bank of New York Mellon Corp | 0.00% | Add +13.1% | 112,119 | $19.9M |
| Segall Bryant & Hamill, LLC | 0.27% | Reduce -10.8% | 111,697 | $19.8M |
| Perceptive Advisors LLC | 0.35% | Reduce -12.2% | 108,000 | $19.2M |
| Federated Hermes, Inc. | 0.03% | Add +51.1% | 106,407 | $18.9M |
| Renaissance Technologies | 0.03% | Reduce -14.4% | 103,900 | $18.4M |
| Squarepoint Ops LLC | 0.03% | Reduce -48.2% | 93,708 | $16.6M |
| M&G PLC | 0.08% | Add +9.5% | 84,138 | $14.9M |
| C WorldWide Group Holding A/S | 0.25% | No change | 80,000 | $14.2M |
| Trexquant Investment LP | 0.12% | Add +217.6% | 78,653 | $14.0M |
| Engineers Gate Manager LP | 0.16% | Reduce -9.5% | 77,119 | $13.7M |
| WCM Investment Management, LLC | 0.03% | Reduce -5.1% | 73,292 | $13.1M |
| BNP Paribas Financial Markets | 0.01% | Reduce -44.6% | 73,651 | $13.1M |
| Frontier Capital Management Co. LLC | 0.13% | Reduce -20.4% | 71,048 | $12.6M |
| Principal Financial Group Inc. | 0.01% | Reduce -13.4% | 69,421 | $12.3M |
| Swiss National Bank | 0.01% | Add +2.4% | 63,400 | $11.2M |
| Freestone Grove Partners LP | 0.08% | New | 63,140 | $11.2M |
| First Trust Advisors LP | 0.01% | Add +3.5% | 60,802 | $10.8M |
| TimesSquare Capital Management, LLC | 0.16% | Reduce -11.1% | 59,822 | $10.6M |
| Peregrine Capital Management LLC | 0.31% | Reduce -2.1% | 56,868 | $10.1M |
| Norges Bank | 0.00% | — | 56,237 | $10.0M |
| Man Group plc | 0.02% | Reduce -72.8% | 56,202 | $10.0M |
| Jain Global LLC | 0.10% | Reduce -58.2% | 54,844 | $9.7M |
| Legal & General Group Plc | 0.00% | Add +24.0% | 52,070 | $9.2M |
| State of Wisconsin Investment Board | 0.02% | Reduce -15.1% | 51,153 | $9.1M |
| Castleark Management LLC | 0.26% | Reduce -14.0% | 50,193 | $8.9M |
| Silvercrest Asset Management Group LLC | 0.06% | Add +0.1% | 47,898 | $8.5M |
| Wells Fargo & Company | 0.00% | Add +55.5% | 45,286 | $8.0M |
| Victory Capital Management Inc. | 0.00% | Reduce -44.6% | 43,215 | $7.7M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.02% | Reduce -17.9% | 42,118 | $7.5M |
| Steadfast Capital Management LP | 0.13% | Add +3.3% | 41,000 | $7.3M |
| Rhumbline Advisers | 0.01% | Reduce -14.7% | 40,610 | $7.2M |
| Prudential Financial Inc. | 0.01% | Reduce -53.3% | 40,424 | $7.2M |
| AQR Capital Management | 0.00% | Add +27.8% | 40,165 | $7.1M |
| Nomura Asset Management International Inc. | 0.01% | — | 39,747 | $7.1M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.01% | Add +21.0% | 38,534 | $6.8M |
"% of holder's portfolio" is IRTC's weight in each manager's 13F, not the share of Irhythm Holdings Inc. the manager owns.