Cheryl Casone explains how the reported delay of OpenAI's IPO is exacerbating a 'wall of worries' in the AI trade, leading investors to rotate out of major semiconductor stocks like Globalfoundries, Analog Devices, and Marvell Technology. Memory chipmakers such as Micron and Western Digital are also experiencing significant drops due to doubts over AI and data center spending and concerns about the cost and electricity usage.