Alphabet’s stock has worst day in over 20 years, dragging the S&P 500 to first loss in four days
A historic drop for Alphabet’s stock dragged the U.S. market lower Thursday after the company behind Google and YouTube reported weaker growth for the summer than analysts expected. The report underscored worries about whether all its huge investments in artificial-intelligence technology will pay off. The S&P 500 fell 0.3% for its first loss in four…