Caterpillar is trading 8.3% lower now at $654.35 after its sales outlook disappointed investors by falling below analyst expectations. - Its October 29 earnings report showed a quarterly profit beat, but revenue of $20.7 billion slightly missed estimates. Management kept full-year sales-growth guidance unchanged at mid-to-high teens; Reuters reported shares fell 9% premarket. - The record $78.1 billion backlog and strong data-center demand did not ease concerns about growth momentum or AI-demand duration. A broader tech pullback may have added pressure, but results and outlook were the clearest catalyst.