ShortInterestHistory.com

HTFL Short Interest History

HTFL Short Interest (June 30, 2026 Update)
Short interest for HTFL was 5.2M as of June 30, 2026, +22.9% 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: June 30, 2026

Current Short Interest5.2M
Prior Short Interest4.2M
Change Shares963.0K
Change %+22.9%
Average Daily Volume3.0M
Days to Cover1.74

At the latest settlement date of June 30, 2026, Heartflow, Inc. Common Stock (HTFL) showed reported short interest of 5,177,499 shares. That compared with 4,214,484 shares in the prior report, a change of 963.0K shares, or +22.9%. The latest reported days to cover was 1.74, based on average daily volume of 3.0M.

The historical data currently tracked for HTFL includes 21 reported entries from August 15, 2025 to June 30, 2026. Over that span, reported short interest has ranged from 401.4K to 6.0M shares.

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
June 30, 20265,177,4994,214,484963.0K+22.9%3.0M1.74
June 15, 20264,214,4843,635,764578.7K+15.9%1.1M3.67
May 29, 20263,635,7643,478,053157.7K+4.5%1.3M2.9
May 15, 20263,478,0534,358,950-880.9K-20.2%1.1M3.31
April 30, 20264,358,9505,546,436-1.2M-21.4%1.1M3.88
April 15, 20265,546,4366,011,764-465.3K-7.7%1.2M4.6
March 31, 20266,011,7645,561,027450.7K+8.1%2.0M3.05
March 13, 20265,561,0275,453,610107.4K+2.0%1.1M5.15
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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