
Technology's dominance on Wall Street has reached unprecedented levels, with the sector now representing 37% of the entire U.S. stock market, surpassing even the height of the dot-com bubble as mega-cap names like Nvidia Corp. (NASDAQ:NVDA), Meta Platforms, Inc. (NASDAQ:META) and Alphabet Inc. (NASDAQ:GOOG) (NASDAQ:GOOGL) lead a five-year rally.