MasTec (MTZ) has arranged a new US$700 million senior unsecured delayed draw term loan to help fund its agreed acquisition of Electrical Specialists, Inc., d/b/a The Superior Group, a critical infrastructure electrical contractor.

MasTec’s latest financing and acquisition plans come after a strong run in the stock, with a year to date share price return of 68.2% and a 1 year total shareholder return of 126.14%. This suggests momentum has built despite a recent 7 day share price decline of 1.97% and modest 30 day and 90 day share price gains of 5.86% and 7.14% respectively.

If this kind of infrastructure story has your attention, it could be a good moment to look across the grid value chain and check out 35 power grid technology and infrastructure stocks

After MasTec’s sharp move and new debt to fund The Superior Group deal, the key issue now is whether most of the easy share price gains are already in the rear-view mirror or if the valuation still leaves clear upside ahead.

Most Popular Narrative: 9.8% Overvalued

MasTec’s most followed narrative points to a fair value of $348.72 versus the last close at $382.90. It frames the stock as running ahead of that model and leans heavily on a long infrastructure build out story.

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.

If you are curious what sits behind that confidence in MasTec, from revenue run rates to margin rebuild and the earnings multiple embedded in the story, the full narrative spells out the assumptions that make those numbers add up.

Result: Fair Value of $348.72 (OVERVALUED)

However, the MasTec story also depends heavily on large projects and policy support, so delays, permitting setbacks or weaker customer spending could quickly challenge that upbeat narrative.

Another View: MasTec Through a Cash Flow Lens

The main narrative presents MasTec as 9.8% overvalued relative to a fair value of $348.72, but the Simply Wall St DCF model suggests a different perspective. On that view, MasTec at $382.90 is about 5.4% below an estimated future cash flow value of $404.55. This raises a different question for you: which story seems more reasonable?

Simply Wall St performs a discounted cash flow (DCF) on every stock in the world every day (check out MasTec 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 44 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

If the mix of optimism and concern around MasTec leaves you unsure, it may be helpful to quickly review the full data and weigh the company's 3 key rewards and 2 important warning signs

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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.