TSMC is trading 3.14% down at BRL 269.70 as semiconductor-sector weakness reflects concerns that tougher U.S. data-center permitting and regulation after the midterm elections could slow AI infrastructure growth and chip demand. - Reuters reported the Philadelphia Semiconductor Index fell 3.6%, even as major U.S. indexes rose. - TSMC’s reported consideration of a Texas expansion is not established as the cause of the decline.