• If you are wondering whether MasTec at around US$412 per share is still priced attractively after a strong run, the next sections will focus squarely on what that price could mean for value.
• The stock has recently shown strong momentum, with returns of 4.6% over 7 days, 21.9% over 30 days, 81.1% year to date and 179.2% over the past year, and 353.7% and 253.0% over the past 3 and 5 years respectively.
• Recent coverage of MasTec has centered on its role in large infrastructure and energy related projects and how that exposure shapes expectations for future work pipelines and capital needs. Commentary has also focused on how this mix of projects may be influencing investor sentiment around both growth prospects and potential execution risks.
• Despite that backdrop, MasTec currently holds a valuation score of 0/6. The rest of this article will compare what different valuation methods suggest about the stock and then finish with a broader way to think about value beyond a single score.

MasTec scores just 0/6 on our valuation checks. See what other red flags we found in the full valuation breakdown.

Approach 1: MasTec Discounted Cash Flow (DCF) Analysis

A Discounted Cash Flow (DCF) model estimates what a stock could be worth today by projecting future cash flows and discounting them back to a present value. It is essentially asking what the stream of expected future cash flows is worth in today’s dollars.

For MasTec, the model used is a 2 Stage Free Cash Flow to Equity approach based on cash flow projections. The company’s last twelve months Free Cash Flow is about $322.6 million. Analyst estimates and subsequent extrapolations suggest Free Cash Flow in 2030 of about $1.56b, with interim years such as 2026 and 2027 projected at $803.2 million and $970.9 million respectively, all in $ and based on the provided ten year projection set.

After discounting these projected cash flows, the model arrives at an estimated intrinsic value of $319.83 per share. Compared with a current share price of around $412, this DCF output implies MasTec is about 28.9% above the model’s estimate of fair value. On this measure, the stock currently screens as overvalued according to the model.

Result: OVERVALUED

Our Discounted Cash Flow (DCF) analysis suggests MasTec may be overvalued by 28.9%. Discover 51 high quality undervalued stocks or create your own screener to find better value opportunities.

Approach 2: MasTec Price vs Earnings

For profitable companies, the P/E ratio is a practical way to think about value because it ties the share price directly to the earnings that shareholders ultimately rely on. In general, higher expected growth and lower perceived risk can justify a higher P/E, while slower growth or higher risk tend to support a lower, more cautious multiple.

MasTec currently trades at a P/E of 71.46x. That compares with an average P/E of 48.04x for the wider Construction industry and a peer average of 45.78x. Simply Wall St also calculates a Fair Ratio of 40.96x, which is the P/E level that might be expected after considering factors such as MasTec’s earnings growth profile, margins, industry, market cap and risk characteristics.

This Fair Ratio is more tailored than a simple comparison with industry or peer averages because it adjusts for company specific features rather than treating all stocks in the group as identical. Setting the current P/E of 71.46x against the Fair Ratio of 40.96x suggests the stock is trading materially above what this framework would point to as a more typical level.

Result: OVERVALUED

P/E ratios tell one story, but what if the real opportunity lies elsewhere? Start investing in legacies, not executives. Discover our 18 top founder-led companies.

Upgrade Your Decision Making: Choose your MasTec Narrative

Earlier it was mentioned that there is an even better way to understand valuation, so meet Narratives, a simple tool on Simply Wall St’s Community page that lets you attach a clear story about MasTec’s future revenue, earnings and margins to a financial forecast. This then leads to a Fair Value that you can compare with the current price as new news or earnings arrive. For example, one conservative MasTec Narrative might line up with a Fair Value around the lower analyst end near US$205, while a more optimistic view could sit closer to the upper end around US$400. This can help you decide whether the stock’s price looks high or low relative to the story you actually believe.

Do you think there's more to the story for MasTec? Head over to our Community to see what others are saying!

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.