BeStock  
Stocks › HTFL

Heartflow HTFL

US equityMarket cap rank #2179Health Information Services
$52.21 +$2.89 (+5.86%)
Market closed · Oct 6, 12:20 am ET · Last extended-hours $52.86 +1.24%
Open$49.29
Prev close$49.32
Day range$49.29 – $53.07
Volume2.45M
Market cap$4.54B
P/E (TTM)–
Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership106.0%+0.04 pts vs. prior quarter
Institutions holding241+1 vs. prior quarter
Insider trades (recent)14 buys / 36 sellsNet selling
Short interest6.47% of floatDays to cover 3.1 · as of 15 Sep 2026
Short-sale volume share13.9%5-day average of daily volume

Short-sale volume as % of daily volume

5%11%16%22%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$10.95M (5 inflow days, 15 outflow days).

The five largest holders on file together own 38.1% of shares outstanding.

Largest holders

  • Wellington Management Group10.62%
  • Bain Capital Life Sciences Investors, LLC9.72%
  • KKR & Co. Inc.6.30%
  • BlackRock5.98%
  • FMR5.54%
  • Vanguard Portfolio Management, LLC4.12%
  • Lonnie Smith4.00%
  • Baron Capital Group, Inc.3.71%

By investor type

  • Mutual Fund66.12%
  • VC/PE Fund25.21%
  • Hedge Fund10.15%
  • Individual/Insider6.60%
  • Public Company2.42%
  • Private Company0.74%
  • Insurance Company0.69%
  • Sovereign Wealth Fund0.34%

Reported short interest has risen from 6.00% to 6.47% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 5,627,391 6.5% 3.1
31 Aug 2026 6,068,706 7.0% 2.5
14 Aug 2026 6,779,888 7.8% 3.9
31 Jul 2026 6,847,694 7.9% 6.6
15 Jul 2026 5,873,437 6.8% 4.2
30 Jun 2026 5,177,499 6.0% 1.7

Discussion

No comments yet — be the first to weigh in on HTFL.

Leave a comment

Scroll to Top