The CNBC Investing Club's Sept. 14 market watch, written by portfolio director Jeff Marks, focuses on pressure facing AI semiconductor and infrastructure stocks after Anthropic co-founder and CEO Dari Amodei called for a globally coordinated slowdown in AI-model development. OpenAI co-founder and CEO Sam Altman and Elon Musk backed the warnings, while Altman said OpenAI would not go public this year because of rising AI safety risks. Software and cybersecurity stocks were rallying as investors considered whether slower AI development could ease SaaS-related concerns, while enterprises face greater pressure to strengthen cybersecurity. Oil was also a major market driver: WTI crude and Brent rose roughly 3% and traded above $100 a barrel after Saudi Arabia shut a pipeline bypassing the Strait of Hormuz, with bond yields moving closely with oil and an interest-rate hike expected at this week's Federal Reserve meeting. The newsletter also covered Johnson & Johnson's talks to sell DePuy Synthes to Apollo Global Management for around $20 billion; Corning's more than 8% decline after a $2 billion at-the-market equity offering agreement with Goldman Sachs; aerospace, apparel, food-service and flavor-sector downgrades; and Wolfe Research's upgrade of Affirm to buy with a $90 price target. It included portfolio actions, Club membership information, trade-alert timing rules and the applicable disclaimer.