Records on Every Line, and a 57% Drawdown
MasTec printed its best quarter ever and lost more than half its market value in 90 days — the gap is the story
MTZ · Earnings Call · 2026-10-30
Records on Every Line, and a 57% Drawdown
MasTec's third quarter was, by the numbers, the best in its history. Revenue of $5,152 million rose 30% year over year. Adjusted EBITDA of $486 million rose 30%. Adjusted EPS were $2.96, up 19%. And 18-month backlog closed at $24.5 billion — up more than $7 billion year over year and $3 billion sequentially, at a 1.6x book-to-bill. Total revenue has grown 795% over sixteen years, and the last four quarters are the steepest part of that curve. And yet the tape tells a different story. The stock is down 53.9% over the last 90 trading days and 57.5% from its May 5 peak of $437.51. That is not a valuation wobble. That is a re-rating. In a quarter where management used the word "record" for revenue, EBITDA, EPS and backlog in the same breath, the market decided the future was worth materially less than it was in June. The gap between those two facts is the story.Communications Gets Demoted
The most consequential sentence in Jose Mas's prepared remarks was not about data centers or gas turbines. It was this: “Communications is not going to be the primary growth driver of MasTec.” — Jose Mas, Chief Executive Officer · 2026-10-30 For a company that spent years describing telecom as its foundational franchise — the business that once represented nearly half of revenue when he became CEO in 2007 — that is a structural admission. The segment is now under 15% of total revenue in the second half. Management has engaged a third-party consulting firm, is closing field offices opened in anticipation of work that did not arrive, and is targeting a couple hundred basis points of margin recovery in 2027. On the top line, the guidance is “flattish year in '27 but with better margins” — Jose Mas, Chief Executive Officer · 2026-10-30. Crucially, this is the second consecutive stumble, not a fresh shock. Three months ago Jose was already saying “we are disappointed with our comms both results in the quarter and our and our guidance for the balance of the year” — Jose Ramon Mas, Chief Executive Officer · 2026-07-31. The difference in October is strategic: Communications has gone from growth engine to managed-for-margin asset. Speculation about a fourth nationwide wireless carrier and announced reorganizations at major customers pushed short-term capital decisions to the right, and the offset — roughly 2,100 miles of fiber awarded for hyperscaler connectivity, with construction starting mid-2027 — sits a year away from the P&L.Pipeline's Sixty-Day Problem
Pipeline Infrastructure is where the quarter actually leaked. Projects were delayed an average of about 60 days, mostly on permitting, pushing planned third-quarter starts into the fourth. Because large pipeline jobs carry enormous production burn rates, a two-month slip is a quarterly earnings event. Q3 margins dipped; Q4 guidance is now framed as a base case and an upside case on mobilization speed. Jose's framing was that the damage is temporal: “the majority of these pushouts were really short. I mean 60 days” — Jose Mas, Chief Executive Officer · 2026-10-30 — and the work simply shifts into 2027, where these same projects constitute the majority of expected first-half pipeline revenue. Pipeline backlog still rose 26% sequentially to roughly $2.3 billion on a 1.7x book-to-bill. But note the pattern. In 2025 it was Greenlink permits compressing a $375–$425 million revenue expectation to roughly $250 million. In 2026 it is pipeline permits. Permitting is now a recurring, systemic timing variable in this business rather than a one-off — which is precisely the kind of thing a high-multiple contractor gets punished for.What Is Genuinely New
Strip out the trouble spots and there are two developments that were not in the story five months ago. First, gas-fired generation. Management has “received limited notice to proceed on projects representing more than $1 billion in total value” — Jose Mas, Chief Executive Officer · 2026-10-30, expected to convert to backlog over the next few quarters. What matters is the acceleration: the activity level is described as meaningfully greater than what was anticipated at the May Investor Day. This is not boilerplate — natural gas infrastructure is showing up across the global reporter set this week, from midstream operators citing the growing need for gas infrastructure to utilities fielding large load interconnection requests. Second, turnkey data center work. General buildings went from roughly a $300 million business to north of $1.2 billion, grew over 4x, and delivered a 2.2x book-to-bill. The strategic logic is that construction management carries low margins but pulls through self-perform electrical, civil and telecom scopes at much better ones. Superior — the acquisition that anchors the electrical infrastructure build-out — is running ahead of plan at $1.8 billion of backlog, and Power Delivery has now posted twelve consecutive quarters of backlog expansion.Why the Tape Disagrees
The most useful cross-check is not the transcript, it is the market's own theme tape. Over the last 90 days the AI infrastructure complex has de-rated broadly: data center capacity, high performance compute, co-packaged optics and high bandwidth memory all sit in the global decliners list, down 5% to 8%. Over 360 days those same themes were up 80% to 180%. MasTec is not an AI stock, but it has been traded like a derivative of one — and when that complex cooled, so did it. Valuation explains the amplification. Even after a 57% drawdown, price to revenue sits at 2.0x, up 155% year over year, and price to free cash flow is 158x. The balance sheet is doing work too: effective net cash is negative $2.3 billion, leverage was 2.5x at quarter-end with only a partial Superior contribution, and management reiterated a below-2x target by year-end. Which makes this the most quietly interesting line of the call:MasTec has bought back essentially nothing recently — the share repurchase line has printed zero for several consecutive quarters. A CFO flagging that the equity is cheap enough to buy, while simultaneously saying the company will do more M&A, is a capital allocation posture, not a throwaway remark.while we believe acquisitions that align with our strategic objectives and valuation parameters, provide excellent returns, we also believe MasTec's current equity valuation presents an opportunity to create shareholder value through disciplined share repurchases.