Memory chip stocks experienced a sharp downturn, with the Roundhill Memory ETF (DRAM) falling 7.35%, following commentary from the CEOs of leading AI companies Anthropic and OpenAI. The executives urged a slowdown in the pace of advanced AI research and development, citing safety and risk concerns. This prompted a negative sentiment shock across the AI hardware sector, leading investors to reassess the previously aggressive growth expectations for AI-related infrastructure. The selling was concentrated in memory stocks, seen as highly leveraged to AI capital expenditures.