Though high-water price targets portend additional upside in quantum computing's hottest stocks, history offers another side to the story.Ever since the S&P 500 bull market took shape three years ago, the rise of artificial intelligence (AI) has led the way. Investor excitement for this multitrillion-dollar opportunity has powered all members of the "Magnificent Seven" higher.But AI isn't the only trend that has investors envisioning dollar signs. In 2025, the hype surrounding quantum computing pure-play st ...