Morgan Stanley is advising investors to pivot towards defensive stocks as the AI market loses momentum. This recommendation comes after a noticeable decline in semiconductor shares. What Happened: On Tuesday, Mike Wilson, Morgan Stanley’s chief U.S. equity strategist, told Bloomberg Surveillance that the excitement around AI investments has diminished. He noted that the semiconductor sector, including major players like Nvidia Corp. (NASDAQ:NVDA), has seen significant drops in stock prices. “A lot of those stocks have really come off. And that makes sense to me. We just got overcooked on the w…