[U.S. technology hardware stocks suffered a sell-off, and the Philadelphia Semiconductor Index fell 5.7%] On October 22, the U.S. semiconductor sector collectively fell, with the Philadelphia Semiconductor Index falling 5.67%, hitting a new low since July 29. Among the constituent stocks, AMD fell 7.21%, Intel fell 6.57%, Applied Materials fell 6.57%, Arm fell 6.75%, Seagate Technology fell 7.81%, Western Digital fell 6.95%; Micron Technology fell 4.29%, Nvidia fell 3.93%, TSMC fell 3.97%, Broadcom fell 3.79%, ASML fell 4.83%. Multiple subdivisions such as storage, semiconductor equipment, and chip design are under pressure simultaneously. In addition, Lam Group fell 9.78%, Lumentum fell 9.24%, Coherent fell 11.81%, and the triple long semiconductor ETF fell 17.09%.