ShortInterestHistory.com

HTFL Short Interest History

HTFL Short Interest (May 29, 2026 Update)
Short interest for HTFL was 3.6M as of May 29, 2026, +4.5% 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: May 29, 2026

Current Short Interest3.6M
Prior Short Interest3.5M
Change Shares157.7K
Change %+4.5%
Average Daily Volume1.3M
Days to Cover2.9

At the latest settlement date of May 29, 2026, Heartflow, Inc. Common Stock (HTFL) showed reported short interest of 3,635,764 shares. That compared with 3,478,053 shares in the prior report, a change of 157.7K shares, or +4.5%. The latest reported days to cover was 2.9, based on average daily volume of 1.3M.

The historical data currently tracked for HTFL includes 19 reported entries from August 15, 2025 to May 29, 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
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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