American Tower (AMT) is back in focus after DISH Wireless defaulted on a key collocation agreement, creating an estimated US$200 million annual revenue loss and muting the company’s 2026 growth outlook.

The share price has been volatile, with a 2.5% 7 day share price return and a 7.4% 30 day share price decline, while the 1 year total shareholder return of 18.3% decline suggests momentum has been fading over a longer period.

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So with American Tower trading at a discount to some valuation estimates, but carrying a muted near term growth outlook after the DISH hit, is there a buying opportunity here, or is the market already pricing in future growth?

Discounted Cash Flow points to upside versus the current share price

On Simply Wall St’s numbers, American Tower’s last close at $173.73 sits well below an estimated future cash flow value of $266.28, implying a sizeable valuation gap based on the SWS DCF model.

The DCF approach projects the cash the business is expected to generate in future, then discounts those cash flows back to today using a rate that reflects risk and the time value of money. That present value estimate is then compared to the current market price to judge whether investors are paying more or less than those modelled cash flows.

For a large, established REIT like American Tower, with forecast revenue growth of 4% per year and earnings growth of about 10.2% per year according to the supplied data, a cash flow based framework can be useful because it focuses on the durability and timing of cash generation rather than short term earnings swings or near term contract noise.

Result: DCF Fair value of $266.28 (UNDERVALUED)

However, the DISH contract default and American Tower’s mixed recent returns suggest that contract concentration and sentiment shifts could still pressure the REIT story.

Another View: Earnings Multiple Sends a Mixed Signal

Price can also be judged against earnings. American Tower trades on a P/E of 32x, which is cheaper than its peer group at 44x, but richer than the wider North American specialized REIT average of 27.2x. It also sits very close to the estimated fair ratio of 32.6x, which is where the market could eventually settle.

That mix of cheaper than peers, slightly above the industry, and near the fair ratio points to limited room for error. If earnings or sentiment slip again, how much support does this valuation really offer compared with other options in the sector?

Simply Wall St performs a discounted cash flow (DCF) on every stock in the world every day (check out American Tower for example). We show the entire calculation in full. You can track the result in your watchlist or portfolio and be alerted when this changes, or use our stock screener to discover 59 high quality undervalued stocks. If you save a screener we even alert you when new companies match - so you never miss a potential opportunity.

Next Steps

With sentiment clearly split between contract risks and long term cash flow support, it makes sense to review the full picture and make a timely decision for yourself using the 4 key rewards and 1 important warning sign

Ready to hunt for your next opportunity?

Before moving on, take a moment to refresh your watchlist with new ideas so you are not relying on a single REIT story to carry your portfolio.

• Spot potential value plays early by scanning companies that appear mispriced on quality and cash flow using the 59 high quality undervalued stocks.
• Zero in on income ideas that aim to combine higher yields with resilience by working through the 13 dividend fortresses.
• Prioritise resilience first by filtering for companies that score well on stability using the 68 resilient stocks with low risk scores.

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.