MasTec (MTZ) Stock Looks Fairly Valued Following Its 233% Run

MasTec, Inc.

MasTec, Inc.

MTZ

0.00

MasTec stock has delivered very strong returns over the past few years. Today, the intrinsic value estimate from a Discounted Cash Flow (DCF) model still points to a sizeable gap to the current share price, while the broader valuation checks sit in more neutral territory.

  • MasTec has returned 232.6% over the past 5 years, which puts extra focus on whether the current price already reflects much of the progress investors have been paying for.
  • Expectations for future project wins and cash flow can support the DCF based intrinsic value, but execution risks on large contracts and capital intensive work may weigh on how much of that value ultimately reaches shareholders.
  • The stock passes 3 of 6 valuation checks, so the value score currently points to a mixed picture rather than a clear bargain or clear overvaluation.

The issue now is whether MasTec's recent share price strength and the DCF implied undervaluation still leave enough margin of safety for investors who are considering the stock today.

Does MasTec Look Undervalued on Cash Flow?

The Discounted Cash Flow (DCF) model here uses MasTec’s projected free cash flows to estimate what the stock could be worth today. MasTec generated around $320.6 million of free cash flow over the last twelve months, and the model assumes that cash flows increase over time from this base.

Based on these assumptions, the DCF model points to an estimated intrinsic value of about $432 per share. Compared with the current share price, that implies the stock trades at roughly a 31.1% discount. This gap suggests MasTec could be undervalued if the projected cash flow changes and capital needs on future projects occur broadly in line with the model.

On balance, the DCF workup indicates MasTec stock currently screens as undervalued according to these model assumptions.

Our Discounted Cash Flow (DCF) analysis suggests MasTec is undervalued by 31.1%. Track this in your watchlist or portfolio, or discover 50 more high quality undervalued stocks.

MTZ Discounted Cash Flow as at Aug 2026
MTZ Discounted Cash Flow as at Aug 2026

Where Does MasTec Sit on Earnings?

The P/E ratio is a common way to check how much investors are paying for each dollar of MasTec earnings. It can be useful when profits are a key focus for the stock.

MasTec currently trades on a P/E of about 47.7x, which sits above the Construction industry average of roughly 39.8x and the peer group average of about 35.0x. The fair P/E ratio implied by the model is around 44.2x, which is only slightly below where the stock trades now.

This suggests the market is putting a premium on MasTec compared with the sector, but not by an extreme amount relative to what the model sees as a reasonable multiple given its profile and risks.

Overall, MasTec looks roughly fairly valued on its P/E multiple compared with its modelled fair ratio and industry benchmarks.

NYSE:MTZ P/E Ratio as at Aug 2026
NYSE:MTZ P/E Ratio as at Aug 2026

The MasTec Narrative: What Would Justify Today's Price?

Simply Wall St Narratives pick up where the MasTec valuation checks leave off. They spell out what would need to happen to the company’s growth, margins and earnings for the stock to be worth materially more or less than today’s price. Each MasTec narrative links a fair value estimate to a clear story about potential catalysts and risks, so you can track over time which version of events appears to be unfolding.

One of the top community narratives on MasTec: 30% undervalued

"Strong sector tailwinds, record backlog, and policy support position MasTec for sustained growth and improved revenue visibility in core energy and communications markets..."

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

The Bottom Line

MasTec looks undervalued on the Discounted Cash Flow (DCF) intrinsic value estimate, while the P/E based view sits closer to about right compared with peers. That mix, together with the broader mixed valuation checks, points to a stock that is not an obvious bargain but still offers potential upside if the intrinsic value assumptions play out. The real dividing line between bulls and bears is whether MasTec can convert its project pipeline into sustained cash generation after funding and capital needs. Your view on that execution risk is likely to decide whether the current discount is an opportunity or a warning.

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.