HeartFlow stock exploded 35.7% higher to US$42.08 in the first full session after earnings. That is an emotional move for a company that still reports losses. The spark was not a one off headline. Q2 revenue reached US$64.1m and management lifted full year guidance to a range of US$246m to US$250m, which highlights the growth story investors have been paying up for.

The key question now is whether this surge simply reflects the stronger fundamentals on display or stretches an already rich valuation even further. The rest of the report provides the information needed to assess that gap.

Is HeartFlow stock now priced for perfection after this move, or does it still offer a margin of safety? Compare the jump in revenue to the current premium multiples in our valuation analysis for HeartFlow.

Q2 2026 Earnings Summary

• Revenue (Q2 2026 vs Q2 2025): US$64.1m vs. US$43.4m (up about 48%)
• Net Income / Loss (Q2 2026 vs Q2 2025): loss of US$15.7m vs. loss of US$9.2m (loss widened)
• Basic EPS (Q2 2026 vs Q2 2025): loss of US$0.18 per share vs. loss of US$1.46 per share (loss per share narrowed)
• Non GAAP Gross Margin (Q2 2026 vs Q2 2025): 83.3% vs. 75.6% (improved by 7.7 percentage points)

Prefer interactive charts instead of another wall of earnings tables and figures? See HeartFlow's full visual valuation breakdown at a glance in our company report for HeartFlow.

HeartFlow bullish story backed by revenue and margins

For investors focused on the upside, HeartFlow’s Q2 numbers broadly support a positive view. Revenue of US$64.1m was up about 48% year on year and management lifted full year revenue guidance to US$246m to US$250m. That points to stronger demand across the platform. Non GAAP gross margin improved from 75.6% to 83.3%, which shows the model is gaining operating efficiency as volumes rise. The share price move after earnings suggests the market is treating this as confirmation that the commercial rollout is tracking ahead of earlier expectations.

Losses and cash burn keep the HeartFlow risk case alive

The bearish side of the HeartFlow story still has real footing. The company remains loss making, with Q2 2026 showing a loss of US$15.7m compared with a loss of US$9.2m a year earlier. Loss per share narrowed, helped by a larger share count, but absolute losses widened. Management is targeting cash flow profitability by mid 2028, which signals several more years of investment and cash burn. For a stock that just jumped 35.7% in a day, the gap between strong growth and the absence of current profitability is an important risk to keep in view.

Expose whether HeartFlow’s widening losses and share price swings are early warning signs. Review the full risk analysis for HeartFlow which shows 2 important warning signs.

Stay Ahead Of Your Next Move

After a one day 35.7% jump and raised revenue guidance, HeartFlow is the kind of stock many investors prefer to track closely before acting. Register for free with Simply Wall St and add HeartFlow to your Watchlist to monitor the share price against fair value and spot a potential entry that fits your plan. Once you are invested, use the Portfolio Command Center to cut through noise and keep on top of the key developments that matter most to your holdings. Round it out by tapping into the crowd insight inside the Community so you can surface potential catalysts or risks early and stay a step ahead of the market.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.