MasTec (MTZ): Evaluating the Infrastructure Leader’s Valuation After a Strong Run

Simply Wall St
MasTec (MTZ) shares have gained steam over the past month, up 4%. Investors are watching closely as strong revenue and net income growth emerge from its core infrastructure construction business.

See our latest analysis for MasTec.

Momentum has been building for MasTec, with its share price climbing 18.2% over the last 90 days and surging more than 51% year-to-date. The three-year total shareholder return stands at an impressive 145%, reflecting sustained optimism around the company's infrastructure growth story despite occasional pullbacks.

If MasTec’s steady run has you thinking about what else is on the rise, this is a great moment to broaden your search and discover fast growing stocks with high insider ownership

With MasTec’s shares not far from analyst price targets and strong fundamentals fueling its rally, the question is clear: does this infrastructure leader still offer room for upside, or is future growth already reflected in the price?

Most Popular Narrative: 14% Undervalued

The narrative consensus points to MasTec’s fair value at $246.67, well above its last close of $212.14. This sets investor expectations for future growth and profitability to potentially unlock further upside if the projections hold true.

Rapid acceleration in utility grid modernization, data center build-outs, and renewable energy investment is fueling double-digit revenue growth and record backlog in MasTec's Power Delivery and Clean Energy & Infrastructure divisions. The company's leading position and customer relationships indicate continued outsized top-line expansion over the next multi-year cycle.

Read the complete narrative.

What is driving this value? The narrative relies on ambitious growth from infrastructure modernization and aggressive profit expansion targets. Want to see which bold assumptions could spark a major re-rating? Click through to uncover the numbers behind this valuation.

Result: Fair Value of $246.67 (UNDERVALUED)

Have a read of the narrative in full and understand what's behind the forecasts.

However, rising execution risk and reliance on large project backlogs mean that unexpected delays or softer demand could quickly challenge MasTec's bullish growth outlook.

Find out about the key risks to this MasTec narrative.

Another View: Caution from Price Ratios

Looking at MasTec through price-to-earnings, investors may notice a red flag. The company's ratio sits at 49.8x, which is higher than both the US Construction industry average of 33x and the peer average of 47.5x. It is also above our fair ratio of 39.6x. This wide gap suggests the market is pricing in a lot of future growth and leaves little room for error if results disappoint. Is the optimism justified or will expectations run ahead of reality?

See what the numbers say about this price — find out in our valuation breakdown.

NYSE:MTZ PE Ratio as at Dec 2025

Build Your Own MasTec Narrative

If these perspectives do not fit your view, you can always dive into the numbers yourself and craft a personal take. Get started in just minutes with Do it your way.

A great starting point for your MasTec research is our analysis highlighting 3 key rewards and 2 important warning signs that could impact your investment decision.

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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.

Valuation is complex, but we're here to simplify it.

Discover if MasTec might be undervalued or overvalued with our detailed analysis, featuring fair value estimates, potential risks, dividends, insider trades, and its financial condition.

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