Can AI earnings keep outrunning oil and bond yields?

The S&P 500 gained 0.58% and the Nasdaq Composite rose 0.45% on Tuesday, taking both indexes to record closing highs as investors favored technology stocks.[2][4] By Wednesday, MSCI’s Asia Pacific gauge had fallen 0.6%, Brent crude was near $101.50 a barrel and the US 10-year Treasury yield had climbed to 5.31%.[1] Why it matters: US equity strength is increasingly tied to a concentrated group of cash-rich AI and mega-cap companies, making the approaching earnings season a test of whether massive AI investment is producing enough profit to offset expensive energy and capital.[1][2] Key insights: The S&P 500 has gained 14% in 2026 and the Nasdaq Composite 18.78%, despite elevated oil prices and a sell-off in US government debt.[2] | Asian technology shares weakened even as Wall Street’s technology-led indexes set records, showing that enthusiasm for the AI buildout is not lifting all related markets equally.[1] | Analysts expect strong third-quarter earnings, with Bloomberg Intelligence projecting roughly 25% year-over-year S&P 500 profit growth and LSEG estimating 30.6% aggregate growth.[1][4] | Markets were pricing about an 80% probability that the Federal Reserve would leave rates unchanged at its next meeting, while investors awaited its September meeting minutes.[3] Cheatsheet facts: What changed: The S&P 500 and Nasdaq reached records, while Asian equities fell 0.6% and US equity futures reversed earlier gains.[1][2] | Why now: AI earnings optimism supported US stocks, but Brent above $100 and high government-bond yields continued to raise inflation and financing concerns.[1][3] | Watch next: Track the Fed’s September meeting minutes and the third-quarter earnings season beginning next week for evidence on rates and AI-related profits.[3][4]