Qualcomm is trading 11.65% down at $153.01 after its November 4 report showed handset contraction and a softer-than-expected profit outlook. - Handset revenue fell 26% to $5.14 billion; first-quarter adjusted EPS guidance midpoint was $2.25, below analyst expectations. - Despite record automotive growth, investors focused on core handset pressure and rising costs; weaker chip sales weighed on semiconductor shares amid AI-regulation and data-center-investment concerns. - The decline exceeds the prior session’s 5.33% gain; no current volume figure was provided.