iRhythm Technologies, Inc. (IRTC) ownership: Top institutional holder: VANGUARD GROUP INC ($587.42M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 3310519.00 | $587.42M | 2025-12-31 |
| BlackRock, Inc. | 2741505.00 | $323.55M | 2026-03-31 |
| SANDS CAPITAL MANAGEMENT, LLC | 1699645.00 | $301.59M | 2025-12-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1796372.00 | $212.01M | 2026-03-31 |
| RTW INVESTMENTS, LP | 1668500.00 | $196.92M | 2026-03-31 |
| MILLENNIUM MANAGEMENT LLC | 1608014.00 | $189.78M | 2026-03-31 |
| Artisan Partners Limited Partnership | 1450907.00 | $171.24M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1445710.00 | $170.62M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-02 | |
| Sell | null | 2026-06-02 | |
| Sell | null | 2026-05-29 | |
| Sell | null | 2026-05-29 | |
| Sell | null | 2026-05-29 | |
| Sell | null | 2026-05-29 | |
| Sell | null | 2026-05-29 | |
| Sell | null | 2026-05-29 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.