MasTec is trading at $159.47, down 4.85% in pre-market on November 5, following a sharp November 4 selloff tied primarily to its reduced 2026 profit outlook and pipeline-project permitting delays. - Management said delayed starts averaged about 60 days, pushing work into 2027. - Record backlog of $24.5 billion and strong quarterly revenue did not ease near-term concerns about project timing and profitability. - No separate November 5 announcement surfaced in the search.