Semiconductor stocks are trading lower, pushing the SOXX ETF down, primarily due to weakness in memory chip companies. Increased competition concerns from Chinese chipmaker CXMT are pressuring stocks like Micron, SanDisk, and SK Hynix. This follows a difficult prior week for the sector, where concerns about the sustainability of AI-related spending emerged after reports of a lower-than-expected revenue outlook from OpenAI. The weakness is sector-specific, as broader market indexes were trading higher.