MasTec Shares Jump 11% While Negative Cash Flow Challenges $21.4 Billion Order Backlog
MasTec (NYSE:MTZ) shares rose 10.9% to $297.59 after a week of gains. The company reported Q2 free cash flow of -$59 million, despite a $21.4 billion order backlog (118% of projected 2026 revenue). Q2 revenue rose 23.4% to $4.37 billion and adjusted EBITDA increased 39.8%. MasTec also completed a $1.65 billion Superior Group acquisition.
How this was made

The 30-second read
Why it matters
The article frames the stock’s rebound as a backlog-driven recovery, but emphasizes the market’s remaining concern: negative free cash flow and higher debt tied to the acquisition, which can cap multiple expansion until cash improves.
Market read
Traders get a near-term catalyst mix: strong operating metrics and backlog versus a cash-flow and leverage overhang, with a technical level focus around $300.
What to watch
Debt level after the Superior Group purchase and segment mix (communications margin drop versus pipeline strength) may drive future FCF volatility more than backlog size alone.
Background
MasTec is a US infrastructure contractor with a large order backlog and recent acquisition activity (Superior Group) that affects leverage and cash conversion.
Ticker impact
MasTec shares jumped 10.9% while Q2 free cash flow was negative $59M, shifting the debate to cash conversion versus backlog demand.
Near-term upside may fade if investors focus on negative FCF and debt-funded acquisition effects; support likely depends on follow-through toward positive cash flow.
Article ties the move to backlog strength but highlights the key counterweight: negative Q2 FCF and rising long-term debt after the Superior Group deal, which can pressure valuation and sentiment.
Market effects
Highlights contractor investor focus on cash conversion and execution risk in data-center and clean-energy buildouts.
Primarily US small-to-midcap construction/engineering sentiment, with peer rally described as widespread.
Limited direct global linkage, but data-center capex themes can influence broader infrastructure sentiment.
Counterpoint
The negative Q2 free cash flow may be timing-related (working capital and acquisition integration), while backlog coverage (118% of projected revenue) could still translate into cash later.
Key entities
- companyMasTec, Inc.
NYSE-listed infrastructure contractor; shares rose ~10.9% weekly while Q2 free cash flow was negative $59M and backlog reached $21.4B.
- acquired_businessThe Superior Group
MasTec’s July 20 acquisition for $1.65B, adding about 3,000 staff and expanding electrical-construction expertise for data centers.
- executiveJosé Mas
CEO quoted attributing performance to revenue growth, margin expansion, and backlog development.
