TSMC is trading 3.4% down at $43.92 following a magnitude 7.1 earthquake in Japan which led to the evacuation of staff at its Kumamoto fab, and amidst broader pressures from the semiconductor sector. - The earthquake in Kumamoto Prefecture, Japan, prompted the evacuation of employees at TSMC's Japan Advanced Semiconductor Manufacturing Inc. (JASM) subsidiary. - The decline is also attributed to ongoing concerns about potential Chinese restrictions on domestic firms using overseas foundries like TSMC, as well as broader AI sector pressure.