HTFL — Heartflow, Inc.
Price · 2025-08-08 → 2026-08-21
261 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2025-08-08.
Performance
Technicals
Others in Healthcare
Measured signals that fired on HTFL
| date | signal | measured base rate |
|---|---|---|
| 2026-08-14 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-08-14 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-28 | Short volume far above its own normal short | -0.76% over 21 days · t = -2.79 · n = 5,897 statistically distinguishable from its control group |
| 2026-07-17 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
| 2026-07-01 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-06-26 | Volume shock without a price move price | -1.33% over 21 days · t = -4.53 · n = 16,432 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-18 | Farquhar John C.M. Chief Executive Officer | Open-market sale 10b5-1 plan | 32.7K | 45.00 | 1.5M |
| 2026-08-17 | Rogers Campbell Chief Medical Officer | Open-market sale 10b5-1 plan | 9.2K | 41.23 | 380.1K |
| 2026-08-17 | Rogers Campbell Chief Medical Officer | Option exercise 10b5-1 plan | 9.2K | 19.00 | 175.2K |
| 2026-08-14 | Farquhar John C.M. Chief Executive Officer | Open-market sale 10b5-1 plan | 15.6K | 39.06 | 607.8K |
| 2026-08-10 | Farquhar John C.M. Chief Executive Officer | Open-market sale 10b5-1 plan | 22.6K | 28.31 | 638.7K |
| 2026-08-07 | Farquhar John C.M. Chief Executive Officer | Shares withheld for tax | 1.9K | 28.82 | 54.9K |
| 2026-08-07 | Rogers Campbell Chief Medical Officer | Shares withheld for tax | 637 | 28.82 | 18.4K |
| 2026-08-07 | Verghese Vikram Chief Financial Officer | Shares withheld for tax | 473 | 28.82 | 13.6K |
| 2026-08-07 | Jones Marie L. Chief Accounting Officer | Shares withheld for tax | 82 | 28.82 | 2.4K |
| 2026-08-06 | Farquhar John C.M. Chief Executive Officer | Shares withheld for tax | 5.8K | 27.19 | 159.0K |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| WELLINGTON MANAGEMENT GROUP LLP | 291.5M | 12.0M |
| Bain Capital Life Sciences Investors, LLC | 254.2M | 10.4M |
| FMR LLC | 131.3M | 5.4M |
| BAMCO INC /NY/ | 93.1M | 3.8M |
| JANUS HENDERSON GROUP PLC | 53.1M | 2.2M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 49.8M | 2.0M |
| Invesco Ltd. | 46.5M | 1.9M |
| VANGUARD CAPITAL MANAGEMENT LLC | 46.1M | 1.9M |
| ALLIANCEBERNSTEIN L.P. | 35.7M | 1.2M |
| BlackRock, Inc. | 35.6M | 1.5M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- HeartFlow's Chief Medical Officer Sells 9,219 Shares Amid a Soaring Stock Price. What Does That Mean for Investors? · 2026-08-20
- Why Heartflow Stock Soared Today · 2026-08-14
- HeartFlow (HTFL) Q2 2026 Earnings Call: Revenue Up 48%, Guidance Raised - TradingKey · 2026-08-14 · TradingKey
- HeartFlow projects $246M-$250M 2026 revenue as Plaque outlook rises to $29M-$31M · 2026-08-14
- Why is Heartflow stock surging today? By Investing.com - Investing.com South Africa · 2026-08-13 · Investing.com South Africa
- Why is Heartflow stock surging today? - Investing.com · 2026-08-13 · Investing.com
Ask the AI about HTFL
The assistant reads every block on this page — price history, filings, insider transactions, institutional positions, short volume, macro and the measured base rates — and says what it implies, quoting the number behind each claim and declaring what it does not have.
Everything on this page is live in the terminal.
Charts, filings, insider flow and the AI — open without an account.
Free plan for good. Pro is $69.99/mo, or $4.99 for a 7-day trial. See the plans →