Qualcomm is trading 9.87% down at $156.09 after its November 4 earnings report highlighted weakness in its core handset business and cautious profit guidance. - Handset revenue fell 26% to $5.14 billion, below estimates. - The midpoint of first-quarter adjusted EPS guidance trailed analyst expectations, despite quarterly revenue and earnings beating estimates. - Semiconductor weakness tied to data-center regulation concerns added sector pressure; earnings and outlook were the clearer company-specific catalyst.