MasTec (MTZ) opened Q1 2026 with revenue of about US$3.8b and basic EPS of US$0.78, setting the tone for how the rest of the year may shape up on both the top and bottom line. Over the past six reported quarters, revenue has moved from US$3.4b in Q4 2024 to just under US$4.0b in Q3 2025 before landing at US$3.8b in the latest quarter. Quarterly basic EPS has ranged from US$0.13 in Q1 2025 to US$2.07 in Q3 2025 and stands at US$0.78 in Q1 2026. With trailing twelve month net income of US$450.0m on revenue of about US$15.3b, the key question is how much of that volume is translating into sustainable margin quality.

See our full analysis for MasTec.

With the latest figures on the table, the next step is to see how this earnings profile lines up against the widely shared narratives about MasTec's growth, risks and long term profitability story.

TTM earnings growth runs ahead of revenue

• Over the last twelve months, MasTec generated about US$15.3b of revenue and US$450.0m of net income, compared with US$14.3b and US$399.0m a year earlier. Earnings growth of 110.4% has outpaced the roughly US$1.0b step up in sales.
• Bulls argue that stronger project execution and higher margin work across energy, communications, and power infrastructure can support this earnings momentum. However, the current 2.9% net margin and forecast 9.6% revenue growth leave less room for error than the more optimistic view suggests.
  • The bullish narrative looks for revenue growth of 12.5% to 16.6% a year and margin expansion toward 4.3% to 4.8%. This is higher than the 9.6% revenue growth forecast in the core data set.
  • If earnings are already growing faster than revenue on a 2.9% margin base, the key question for the bullish case is whether that margin lift actually shows up in future TTM numbers or whether growth moderates toward the 9.6% revenue outlook.

MasTec’s recent earnings run gives bulls plenty to point to. The gap between 9.6% revenue forecasts and the higher growth rates in the optimistic narrative is where the real debate starts, and that is exactly what bulls try to unpack in the 🐂 MasTec Bull Case.

Margins improve, but stay thin at 2.9%

• Net profit margin for the last year sits at 2.9% versus 1.7% the prior year. Roughly US$449.979m of net income came from about US$15.28b of revenue, which is still a relatively low margin for an engineering and construction business.
• Critics highlight that margin pressures from complex projects and ramp up costs could limit how far this improvement goes, even though analysts in the balanced narrative expect margins to move toward 4.3% over the next few years.
  • The bearish narrative points to project execution risk and the possible drag from large pipeline completions, which could make it harder to shift from a 2.9% net margin toward the 4.0% to 4.3% range that bearish and consensus views use in their 2029 earnings paths.
  • At the same time, the year on year move from 1.7% to 2.9% shows that some margin recovery is already in the trailing numbers. This challenges the idea that cost issues are uniformly limiting profitability across the portfolio.

Rich valuation versus 72.2x P/E and DCF fair value

• With a current share price of US$417.41, MasTec trades at a P/E of 72.2x and above a DCF fair value of about US$323.03. The analyst price target to reference is US$401.12, so the market price sits above both the intrinsic value estimate and the standardised target.
• Bears argue that paying 72.2x earnings and a premium to DCF fair value leaves little cushion if growth or margins fall short, especially since the P/E is higher than the 42.8x peer average and 44.2x for the US Construction industry.
  • The current price also stands above the US$323.03 DCF fair value figure, which backs the concern that investors are assuming a stronger path for earnings than the discounted cash flow model supports.
  • Even the reference analyst target of US$401.12 sits below the US$417.41 share price, which lines up with the idea that expectations embedded in the market price are already more optimistic than the standardised analyst case.

Skeptics who focus on the 72.2x P/E and the premium to DCF fair value see these Q1 numbers as a reason to recheck how much growth is already priced in. This is exactly the tension the cautious narrative digs into in 🐻 MasTec Bear Case.

Next Steps

To see how these results tie into long-term growth, risks, and valuation, check out the full range of community narratives for MasTec on Simply Wall St. Add the company to your watchlist or portfolio so you'll be alerted when the story evolves.

Mixed on the story so far or simply unsure what matters most here? Take a closer look at the figures, weigh the upside against the downside, and check the balance of 2 key rewards and 2 important warning signs

See What Else Is Out There

Thin 2.9% margins, a 72.2x P/E, and a share price above both DCF fair value and analyst target leave limited room for earnings disappointment.

If paying a premium for thin margins feels uncomfortable, you may want to look at companies where valuation appears more forgiving and start with the 51 high quality undervalued stocks.

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.