A Full Analysis of MasTec ($MTZ)

Together with DUTY 

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MasTec just put up the strongest first quarter in its 40-plus year history, and the stock has more than doubled off its 2025 lows. Today we're digging into why the market finally woke up to this infrastructure builder, and whether there could still be room to run.

Stock Deep Dive: MasTec Inc. (MTZ-US, $28.5B MCAP)

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• Why Now 👉 The setup behind MasTec's breakout year

• Overview 👉 Four decades of building critical infrastructure

• How Do They Win 👉 The turnkey advantage

• Business Units 👉 Where the revenue actually comes from

• By The Numbers 👉 Breaking down a record quarter

• Bonus Deep Dive 👉 The data center power crunch

• Risks 👉 What could derail the story

• Wrapping Up 👉 The bottom line on MTZ

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Why Now 👉 The setup behind MasTec's breakout year

MasTec spent 2023 and 2024 working through a rough patch. Margins were thin, project timing was lumpy, and the stock spent most of that stretch under $100. That changed fast. Shares have run from roughly $160 at their 52-week low to the $370 to $390 range today, a move driven almost entirely by fundamentals rather than hype. The first quarter 2026 print was the catalyst: record revenue, record EBITDA growth, and a backlog that jumped $4.4B year over year to $20.3B. Management didn't just beat estimates, they raised full year guidance to $17.5B in revenue and $8.79 in adjusted EPS, both well above where analysts had modeled entering the year.

The bigger story is what's driving that backlog. AI data centers need enormous amounts of electricity, and the grid that has to deliver it was largely built decades ago. MasTec sits at the intersection of that problem, building the transmission lines, substations, and power infrastructure utilities need to keep up with demand. Add in continued strength in fiber and renewable energy construction, and you have a company whose end markets are all pointing the same direction at once.

Overview 👉 Four decades of building critical infrastructure

MasTec traces its roots back to 1929, but the modern company took shape under Jose Mas, who became CEO in 1994 and has led an aggressive expansion through both organic growth and acquisitions. Today the company operates through five reporting segments, Communications, Clean Energy and Infrastructure, Power Delivery, Pipeline Infrastructure, and Other, primarily serving customers in the United States and Canada.

The business model is straightforward but hard to replicate. MasTec employs a large, skilled workforce of engineers and craft labor capable of building, installing, and maintaining physical infrastructure across wireless and fiber networks, electrical transmission and distribution systems, renewable power generation, and oil and gas pipelines. That breadth means MasTec rarely depends on a single end market to carry results, which is exactly what's playing out in 2026 as Pipeline, Clean Energy, and Power Delivery all posted double-digit growth simultaneously.

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