ShortInterestHistory.com

HTFL Short Interest History

Heartflow, Inc. Common Stock | HTFL | Nasdaq | Latest report: February 27, 2026

Current Short Interest5.5M
Prior Short Interest4.6M
Change Shares893.4K
Change %+19.6%
Average Daily Volume1.2M
Days to Cover4.39

At the latest settlement date of February 27, 2026, Heartflow, Inc. Common Stock (HTFL) showed reported short interest of 5,453,610 shares. That compared with 4,560,254 shares in the prior report, a change of 893.4K shares, or +19.6%. The latest reported days to cover was 4.39, based on average daily volume of 1.2M.

The historical data currently tracked for HTFL includes 13 reported entries from August 15, 2025 to February 27, 2026. During that span, reported short interest ranged between 401.4K and 5.5M shares.

Download last 6 months as CSV

Short Interest Over Time

Days to Cover Over Time

Extreme edge-case readings may reflect unusually low reported average volume.

Short Interest History for HTFL

Settlement DateShort InterestPrior Short InterestChange SharesChange %Average Daily VolumeDays to Cover
February 27, 20265,453,6104,560,254893.4K+19.6%1.2M4.39
February 13, 20264,560,2544,951,283-391.0K-7.9%2.8M1.65
January 30, 20264,951,2833,476,8091.5M+42.4%843.0K5.87
January 15, 20263,476,8093,162,641314.2K+9.9%830.4K4.19
December 31, 20253,162,6411,448,7871.7M+118.3%1.0M3.06
December 15, 20251,448,7871,219,620229.2K+18.8%503.1K2.88
November 28, 20251,219,6201,102,016117.6K+10.7%694.8K1.76
November 14, 20251,102,016484,255617.8K+127.6%499.6K2.21
October 31, 2025484,255401,39982.9K+20.6%242.0K2
October 15, 2025401,399766,554-365.2K-47.6%385.3K1.04
September 15, 2025595,908545,22450.7K+9.3%322.8K1.85
August 29, 2025545,224463,10082.1K+17.7%360.2K1.51
August 15, 2025463,1000463.1K+100.0%1.1M1

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