#philadelphiasemiconductorindexfalls5.9% NEWS: Semiconductor shares tumbled amid worries about a possible slowdown in advanced AI development, dragging US stocks lower. The Philadelphia Semiconductor Index sank 5.9%, the Nasdaq 100 dropped 0.8% and the S&P 500 shed 0.5%, with Nvidia and Broadcom among those affected$SMH $ETHFI $API3