As the S&P 500 Falls, Warren Buffett's Warning Has Become Deafening

The artificial intelligence (AI) boom has been driving the S&P 500 to new heights this year, but some investors are wary of an AI bubble. The eight most valuable stocks in the U.S. market are AI-related stocks, and they account for nearly 40% of the S&P 500, a weighted index. That means their movements largely dictate how the index moves, regardless of what's happening with the remaining 490-odd stocks in it.After hitting multiple records leading up to Nvidia's (NASDAQ: NVDA) earnings report last week, the S&P 500 has begun to decline. It could move back up at any time -- there are always dips and troughs. But it could be a signal that the AI bubble is starting to burst.Is it time for investors to heed Warren Buffett's warning?Continue readingWeiter zum vollständigen Artikel bei MotleyFool Weiter zum vollständigen Artikel bei MotleyFool