Alphabet and Caterpillar Drive U.S. Indices Higher Amid AI Capex Divergence

Major U.S. indices closed higher on April 30, led by standout performances from Alphabet and Caterpillar. The S&P 500 rose 1.02% to 7,209.00, the Nasdaq Composite added 0.89% to 24,892.31, and the Dow Jones Industrial Average jumped 1.62% to 49,652.15. The rally was characterized by a sharp divergence in how investors are valuing artificial intelligence investments. While Alphabet's aggressive AI strategy was rewarded, peers Microsoft and Meta faced selling pressure as analysts questioned the immediate return on investment for massive capital expenditures. Alphabet shares spiked approximately 10% following a blockbuster earnings report highlighted by a 62% surge in Google Cloud revenue. The company plans to invest roughly $185 billion in capex. In contrast, Microsoft and Meta saw declines of 4% and 9% respectively, as their projected capex of $190 billion and $135 billion sparked concerns over spending efficiency. Caterpillar also played a pivotal role in the day's gains, surging 10% on robust results fueled by the data center and AI infrastructure boom. Given its significant weight in the Dow, Caterpillar's move was a primary driver of the index's 1.6% rise. Market attention now shifts to Apple, which saw its shares dip 1% in after-hours trading despite beating Wall Street expectations. The reaction to the $4 trillion company's results is expected to dictate the market's direction in the coming session.