HTFL Short Interest (July 15, 2026 Update)
Short interest for HTFL was 5.9M as of July 15, 2026, +13.4% from the prior report.
This page tracks HTFL short interest over time, including historical values, changes between reports, and days to cover.
Heartflow, Inc. Common Stock | HTFL | Nasdaq | Latest report: July 15, 2026
At the latest settlement date of July 15, 2026, Heartflow, Inc. Common Stock (HTFL) showed reported short interest of 5,873,437 shares. That compared with 5,177,499 shares in the prior report, a change of 695.9K shares, or +13.4%. The latest reported days to cover was 4.15, based on average daily volume of 1.4M.
The historical data currently tracked for HTFL includes 22 reported entries from August 15, 2025 to July 15, 2026. Over that span, reported short interest has ranged from 401.4K to 6.0M shares.
Extreme edge-case readings may reflect unusually low reported average volume.
| Settlement Date | Short Interest | Prior Short Interest | Change Shares | Change % | Average Daily Volume | Days to Cover |
|---|---|---|---|---|---|---|
| July 15, 2026 | 5,873,437 | 5,177,499 | 695.9K | +13.4% | 1.4M | 4.15 |
| June 30, 2026 | 5,177,499 | 4,214,484 | 963.0K | +22.9% | 3.0M | 1.74 |
| June 15, 2026 | 4,214,484 | 3,635,764 | 578.7K | +15.9% | 1.1M | 3.67 |
| May 29, 2026 | 3,635,764 | 3,478,053 | 157.7K | +4.5% | 1.3M | 2.9 |
| May 15, 2026 | 3,478,053 | 4,358,950 | -880.9K | -20.2% | 1.1M | 3.31 |
| April 30, 2026 | 4,358,950 | 5,546,436 | -1.2M | -21.4% | 1.1M | 3.88 |
| April 15, 2026 | 5,546,436 | 6,011,764 | -465.3K | -7.7% | 1.2M | 4.6 |
| March 31, 2026 | 6,011,764 | 5,561,027 | 450.7K | +8.1% | 2.0M | 3.05 |
| March 13, 2026 | 5,561,027 | 5,453,610 | 107.4K | +2.0% | 1.1M | 5.15 |
| February 27, 2026 | 5,453,610 | 4,560,254 | 893.4K | +19.6% | 1.2M | 4.39 |
| February 13, 2026 | 4,560,254 | 4,951,283 | -391.0K | -7.9% | 2.8M | 1.65 |
| January 30, 2026 | 4,951,283 | 3,476,809 | 1.5M | +42.4% | 843.0K | 5.87 |
| January 15, 2026 | 3,476,809 | 3,162,641 | 314.2K | +9.9% | 830.4K | 4.19 |
| December 31, 2025 | 3,162,641 | 1,448,787 | 1.7M | +118.3% | 1.0M | 3.06 |
| December 15, 2025 | 1,448,787 | 1,219,620 | 229.2K | +18.8% | 503.1K | 2.88 |
| November 28, 2025 | 1,219,620 | 1,102,016 | 117.6K | +10.7% | 694.8K | 1.76 |
| November 14, 2025 | 1,102,016 | 484,255 | 617.8K | +127.6% | 499.6K | 2.21 |
| October 31, 2025 | 484,255 | 401,399 | 82.9K | +20.6% | 242.0K | 2 |
| October 15, 2025 | 401,399 | 766,554 | -365.2K | -47.6% | 385.3K | 1.04 |
| September 15, 2025 | 595,908 | 545,224 | 50.7K | +9.3% | 322.8K | 1.85 |
| August 29, 2025 | 545,224 | 463,100 | 82.1K | +17.7% | 360.2K | 1.51 |
| August 15, 2025 | 463,100 | 0 | 463.1K | +100.0% | 1.1M | 1 |