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Wondering whether AST SpaceMobile at around US$89.58 is priced for the future or already reflecting a lot of optimism? This article walks you through what the current valuation actually says.
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The stock has been volatile, with returns of 19.7% over the last 7 days, 10.6% over the last 30 days, 7.3% year to date, 275.9% over the last year, and a very large 3 year gain of about 17x.
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Recent headlines have focused on AST SpaceMobile’s efforts to build a space based cellular broadband network in partnership with major telecom companies, which has kept attention firmly on the stock. This context helps explain why price moves have been sharp as investors react to each development in the story.
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Despite that excitement, AST SpaceMobile currently scores just 1 out of 6 on our valuation checks. The rest of this article will compare different valuation approaches, then finish with a way to tie them together into a bigger picture that can be even more useful for you.
AST SpaceMobile scores just 1/6 on our valuation checks. See what other red flags we found in the full valuation breakdown.
Approach 1: AST SpaceMobile Discounted Cash Flow (DCF) Analysis
A Discounted Cash Flow, or DCF, model looks at projections of future cash flows and then discounts them back to what they might be worth today. It is essentially asking what a stream of future cash flows could be worth in today’s dollars.
For AST SpaceMobile, the model uses a 2 Stage Free Cash Flow to Equity approach based on cash flow projections. The latest twelve month free cash flow shows an outflow of about $1.71b. Analyst and extrapolated estimates then move through a mix of continued outflows and inflows, with projected free cash flow of about $1.04b in 2030. All of these cash flows are modeled in $ and discounted back to the present.
Putting these projections together results in an estimated intrinsic value of about $107.29 per share. Against the current share price of roughly $89.58, the DCF implies the stock is about 16.5% undervalued on these assumptions.
Result: UNDERVALUED
Our Discounted Cash Flow (DCF) analysis suggests AST SpaceMobile is undervalued by 16.5%. Track this in your watchlist or portfolio, or discover 51 more high quality undervalued stocks.
ASTS Discounted Cash Flow as at May 2026
Approach 2: AST SpaceMobile Price vs Book
For companies that are still building toward consistent profitability, price based on book value can be a useful anchor because it relates the share price to the net assets on the balance sheet rather than earnings that may be volatile or negative. For profitable companies, investors often look for a P/B ratio that reflects a balance between expected growth and the risks around delivering on that growth.
Higher growth expectations or lower perceived risk can justify a higher P/B ratio, while lower growth or higher risk usually points to a lower, more cautious multiple. AST SpaceMobile currently trades at a P/B of about 12.87x. That is well above the Telecom industry average of roughly 1.21x and also above the peer group average of about 11.61x, which shows how much investors are focusing on its potential.
Simply Wall St’s Fair Ratio is designed to go a step further than simple peer or industry comparisons by estimating what a “normal” P/B might be for AST SpaceMobile after considering factors such as its earnings profile, growth expectations, profit margins, market cap and company specific risks. Because the Fair Ratio is not provided here, it is not possible to conclude whether the current 12.87x P/B suggests the stock is overvalued, undervalued or about right.
Result: ABOUT RIGHT
NasdaqGS:ASTS P/B Ratio as at May 2026
P/B ratios tell one story, but what if the real opportunity lies elsewhere? Start investing in legacies, not executives. Discover our 20 top founder-led companies.
Upgrade Your Decision Making: Choose your AST SpaceMobile Narrative
Earlier it was mentioned that there is an even better way to understand valuation. Think of a Narrative as your own clear story for AST SpaceMobile that connects what you believe about its business and milestones to a set of revenue, earnings and margin forecasts. These then feed into a fair value that you can compare with the current price to help frame your buy or sell timing decisions.
On Simply Wall St, Narratives on the Community page let you do this in a straightforward way. You can see, for example, one AST SpaceMobile Narrative that assumes fair value around US$25 to US$55 and another that points to about US$95. You can then decide which story and set of assumptions fits your view, knowing that these Narratives will update as fresh news, earnings or guidance change the underlying numbers.
For AST SpaceMobile, however, we will make it really easy for you with previews of two leading AST SpaceMobile Narratives:
Each one ties together catalysts, risks and a fair value estimate, so you can quickly see which storyline is closer to how you see the stock.
Fair value in this bullish Narrative: US$95.00
Implied undervaluation vs. around US$89.58: about 5.7% below that Narrative fair value on these assumptions
Revenue growth used in this Narrative: 39,461.16%
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Assumes AST SpaceMobile successfully scales a global space based cellular network using its existing operator partnerships, contracted revenue and cash position to support deployment.
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Builds in very strong revenue and margin expansion over the next few years, with analyst forecasts pointing to a sharp swing from current losses to multi billion dollar earnings by around 2028.
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Arrives at a US$95.00 fair value by applying a P/E of 18.8x to those future earnings and discounting back, with an explicit reminder for you to sense check whether those growth and profitability assumptions feel realistic.
Fair value in this bearish Narrative: midpoint of about US$40.00 within a US$25.00 to US$55.00 range
Implied overvaluation vs. around US$89.58: trading roughly 55% to 72% above that US$25.00 to US$55.00 fair value range on these assumptions
Revenue growth used in this Narrative: 33,517%
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Highlights that the stock price embeds very high expectations while the company is still reporting material cash burn, with less than two years of runway at the stated free cash flow levels if conditions do not change.
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Frames competition and capital needs as central issues, including the impact of a large technology entrant acquiring Globalstar, potential carrier hedging and the possibility of further dilutive funding rounds.
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Builds a bottom up case that even with multi billion dollar revenue and healthy margins by 2029, a more conservative multiple and discount rate point to a much lower fair value range than where the stock is trading today.
Do you think there’s more to the story for AST SpaceMobile? Head over to our Community to see what others are saying!
NasdaqGS:ASTS 1-Year Stock Price Chart
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.
Companies discussed in this article include ASTS.
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