IRHYTHM HOLDINGS INC IRTC
$126.48
+1.6% 52w: $101.79 – $189.25
Latest 13F among current holders filed 8 days ago (Aug 25, 2026)
Price — last 12 months
research preview data101.79145.52189.25
Aug 18, 2025 Jul 2, 2026
Institutional holders
308
-29 QoQ
13F value
$4.24B
-33.4% QoQ
Smart-money holders
18
signal tier ≥ 2
New smart buyers
4
Q1 2026
Options barometer
1.4×
$11.5M calls / $8.5M puts
Institutional value by quarter
Number of holders
Who owns IRTC?
Q1 2026 filings| Fund | Type | Shares | Value | % of fund | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | Index provider | 2.7M | $323.6M | 0.0% | -2.6% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Diversified mechanical | 1.8M | $212.0M | — | — |
| RTW INVESTMENTS, LP ★2 | Fundamental diversified | 1.7M | $196.9M | — | +41.2% |
| MILLENNIUM MANAGEMENT LLC | Multistrat pod | 1.6M | $189.8M | 0.1% | +94.6% |
| Artisan Partners Limited Partnership | Other | 1.5M | $171.2M | — | -4.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | Diversified mechanical | 1.4M | $170.6M | — | — |
| FMR LLC | Long only active | 1.4M | $160.7M | 0.0% | +116.6% |
| Holocene Advisors, LP | Other | 1.2M | $147.4M | 0.4% | +82.7% |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Bank broker | 1.0M | $123.6M | 0.0% | +26.2% |
| GEODE CAPITAL MANAGEMENT, LLC | Index provider | 817.1K | $96.5M | — | -4.8% |
| STATE STREET CORP | Index provider | 788.3K | $93.0M | 0.0% | +3.1% |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | Bank broker | 762.1K | $89.9M | 0.1% | +30.7% |
| EVENTIDE ASSET MANAGEMENT, LLC | Other | 760.8K | $89.8M | — | +9.9% |
| JPMORGAN CHASE & CO | Bank broker | 714.9K | $81.6M | 0.0% | -5.8% |
| FULLER & THALER ASSET MANAGEMENT, INC. | Other | 674.7K | $79.6M | — | -47.2% |
| BLAIR WILLIAM & CO/IL | Diversified mechanical | 628.4K | $74.2M | 0.2% | -12.6% |
| BRAIDWELL LP ★2 | Fundamental diversified | 610.2K | $72.0M | — | +180.7% |
| Point72 Asset Management, L.P. | Multistrat pod | 599.4K | $70.7M | 0.1% | +173.1% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Quant stat arb | 582.9K | $68.8M | 0.0% | -4.0% |
| Stephens Investment Management Group LLC | Other | 561.5K | $66.3M | — | +8.1% |
| D. E. Shaw & Co., Inc. | Quant stat arb | 554.3K | $65.4M | 0.1% | +53.7% |
| Capital Research Global Investors | Long only active | 509.6K | $60.1M | 0.0% | -57.0% |
| Allspring Global Investments Holdings, LLC | Diversified mechanical | 467.1K | $55.2M | 0.1% | +14.7% |
| BANK OF AMERICA CORP /DE/ | Bank broker | 432.5K | $51.0M | 0.0% | +21.9% |
| Polar Capital Holdings Plc | Other | 421.6K | $49.8M | — | +36.8% |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | Diversified mechanical | 390.6K | $46.1M | 0.0% | +99.2% |
| MACKENZIE FINANCIAL CORP | Diversified mechanical | 371.5K | $43.8M | 0.1% | +7.0% |
| LOOMIS SAYLES & CO L P | Other | 367.9K | $43.4M | — | -6.2% |
| GOLDMAN SACHS GROUP INC | Bank broker | 348.6K | $41.1M | 0.0% | +5.9% |
| Ophir Asset Management Pty Ltd ★2 | Fundamental concentrated | 335.8K | $39.6M | — | +163.0% |
| Invesco Ltd. | Index provider | 297.5K | $35.1M | 0.0% | -40.3% |
| NORTHERN TRUST CORP | Index provider | 285.1K | $33.6M | 0.0% | +2.2% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Index provider | 281.9K | $33.3M | — | -1.5% |
| FRED ALGER MANAGEMENT, LLC | Other | 280.0K | $33.1M | — | -9.8% |
| Assenagon Asset Management S.A. | Diversified mechanical | 270.2K | $31.9M | — | +20.0% |
| Rock Springs Capital Management LP ★2 | Fundamental diversified | 261.8K | $30.9M | — | +11.4% |
| SCHRODER INVESTMENT MANAGEMENT GROUP | Diversified mechanical | 247.7K | $28.3M | 0.0% | +52.9% |
| MORGAN STANLEY | Bank broker | 237.8K | $28.1M | 0.0% | +39.9% |
| AMERIPRISE FINANCIAL INC | Bank broker | 236.8K | $27.9M | 0.0% | +91.5% |
| CITIGROUP INC | Bank broker | 232.1K | $27.4M | 0.0% | +22.0% |
| Qube Research & Technologies Ltd | Quant stat arb | 226.9K | $26.8M | — | +56.9% |
| VANGUARD FIDUCIARY TRUST CO | Diversified mechanical | 223.7K | $26.4M | — | — |
| DEUTSCHE BANK AG\ | Bank broker | 215.8K | $25.5M | 0.0% | +15.0% |
| SEI INVESTMENTS CO | Diversified mechanical | 198.9K | $23.5M | 0.0% | -2.2% |
| Balyasny Asset Management L.P. | Multistrat pod | 194.4K | $22.9M | 0.0% | +16.2% |
| BARCLAYS PLC | Bank broker | 188.3K | $22.2M | 0.0% | -2.9% |
| TUDOR INVESTMENT CORP ET AL | Quant stat arb | 20.0M | $22.0M | 0.1% | New |
| BAMCO INC /NY/ | Other | 183.9K | $21.7M | — | New |
| NEXT CENTURY GROWTH INVESTORS LLC | Other | 169.3K | $20.0M | — | -2.0% |
| First Light Asset Management, LLC ★3 | Fundamental concentrated | 168.1K | $19.8M | — | +9.3% |
Exits are not a bearish signal: our backtest shows stocks specialists exit keep outperforming for 3+ quarters — selling usually means profit-taking, not a forecast.
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