Joby Aviation (JOBY) is drawing fresh attention after flying its FAA conforming eVTOL aircraft, conducting high profile urban demonstration flights, and advancing within U.S. government pilot programs that support real world air taxi testing.

Against this backdrop of FAA progress, urban test flights and high profile investors increasing exposure, Joby’s share price has been volatile, with a 30 day share price return of 10.18% but a year to date share price decline of 29.87%. At the same time, the 1 year total shareholder return of 51.89% points to stronger longer term momentum.

If excitement around air taxis has you looking beyond a single stock, this is a good moment to scan 45 AI infrastructure stocks for other infrastructure plays tied to AI and next generation transport.

With Joby’s share price swinging, a mixed return profile, and a market cap near US$9.8b, the key question is whether current levels reflect excessive optimism about future air taxi adoption or a potential entry point that markets have not fully priced in yet.

Most Popular Narrative: 17.1% Undervalued

Joby Aviation's most followed narrative pegs fair value at $12.14 per share, compared with the last close of $10.07, implying a meaningful valuation gap.

The company is investing heavily ahead of broad commercial adoption, including scaling manufacturing with Toyota, building out facilities in Marina and Dayton, and preparing global operations. This could keep cash use high and delay earnings leverage if real air taxi demand or pricing power falls short of expectations, pressuring future net margins.

Want to see what kind of revenue ramp and margin lift would need to offset that cash burn and still justify a higher price? The narrative leans on aggressive top line expansion, rising profitability and a rich future earnings multiple that is usually reserved for fast growing sectors.

Result: Fair Value of $12.14 (UNDERVALUED)

However, solid liquidity near US$1.55b and expanding government and defense programs could support operations longer and challenge the idea that expectations are already stretched.

Another View: Price To Book Paints A Tougher Picture

While the narrative suggests fair value of $12.14 and labels Joby as undervalued, the simple P/B lens tells a different story. The stock trades around 5.1x book value, compared with about 1.9x for the global airlines industry and 1.8x for peers, which points to a much richer valuation that could shrink quickly if sentiment cools.

For an investor weighing these signals, the gap between Joby’s current P/B and lower industry and peer levels raises a practical question: is this a premium that feels comfortable to hold through volatility, or a sign to demand more evidence before leaning on the bullish narrative?

Next Steps

If the mixed signals so far leave you on the fence, it might help to review the core data and weigh the potential upside against the potential downside yourself with 1 key reward and 2 important warning signs

Looking for more investment ideas?

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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.