AI Infrastructure Surge Drives Broad Market Gains

Wall Street rallied on Wednesday as cooling inflation data and a surge in AI-related earnings spurred investor optimism. The S&P 500 and Nasdaq climbed higher, buoyed by signs that the Federal Reserve may hold interest rates steady in September, providing a reprieve from persistent concerns over the cost of capital.

Editorial·August 12, 2026·reads: 107

AI Infrastructure Surge Drives Broad Market Gains

July consumer price figures arrived with only modest increases, largely supported by a two-month decline in gasoline costs. Robert Pavlik, senior portfolio manager at Dakota Wealth, pointed to the market's palpable relief that the data aligned with expectations, effectively muting immediate fears of aggressive monetary tightening.

CoreWeave emerged as the session's standout performer, jumping 19% after lifting its annual capital expenditure forecast and reporting stronger-than-anticipated second-quarter earnings. This momentum rippled across the sector, lifting shares of IREN, Applied Digital, and Super Micro Computer. The broader rally extended to chipmakers, with Nvidia and Micron Technology posting notable gains. Consequently, the PHLX Semiconductor Index notched its most significant single-day advance in more than a week.