Semiconductor stocks and ETFs have been fluctuating lately. On one hand, this group has been benefiting from the increasing demand for artificial intelligence (AI) hardware. On the other hand, occasional concerns about a potential demand slowdown are emerging.Semiconductor giant NVIDIA (NVDA) hit a record stock close on Monday, only to dive 4.7% on Tuesday and rise 3.1% again on Wednesday. In addition to NVIDIA, other AI chip and hardware companies like Arm (ARM) , Qualcomm (QCOM) , Broadcom (AVGO) , Super ...