US Markets Cautious as 3.7% PCE Inflation Lifts Fed Rate Hike Bets Ahead of Nvidia Earnings

The Quick Take

• US July PCE inflation rose to 3.7% annually, above expectations, pushing Fed rate hike probability for September materially higher
• The Dow slipped 0.04%, S&P 500 edged up 0.03%, and Nasdaq fell 0.06% as investors awaited Nvidia's quarterly results in a cautious trading session
• S&P 500 and Nasdaq-100 futures also slipped marginally as Nvidia earnings and PCE Price Index dominated investor attention

US equity markets exhibited a range-bound, cautious tone on August 26, 2026, caught between two powerful forces: hotter-than-expected inflation that raises the risk of a Federal Reserve rate hike, and anticipation of Nvidia's quarterly earnings that have become a proxy for the entire AI investment thesis. The PCE price index—the Fed's preferred inflation gauge—rose 3.7% annually in July, above consensus estimates, eliminating the 'no hike needed' narrative that had supported equity risk appetite through the prior month. The simultaneous presence of Nvidia's earnings as a potential positive catalyst created an unusual paralysis across market participants.

The market implication divides along sector lines. Rate-sensitive sectors—utilities, REITs, and long-duration growth stocks—face downward pressure if September brings a rate hike as the 3.7% inflation reading implies. Meanwhile, Nvidia's earnings outlook, if bullish, could override the rate concerns for technology specifically, creating an intra-market divergence where AI-adjacent tech outperforms while broad market indices struggle. For FII flows into Indian markets, a Fed rate hike would strengthen the dollar and potentially trigger capital outflows from emerging markets including India, putting near-term pressure on the Nifty and Sensex.

The single most critical data point to watch is the Nvidia Q2 2026 earnings call guidance for Q3 and full-year AI chip demand—this will either validate or deflate the AI capex super-cycle thesis that underpins much of the current market multiple. Simultaneously, watch the August FOMC minutes for any hawkish pivot language around the inflation re-acceleration; any explicit September rate hike signal would force a repricing of the entire yield curve. The macro variable is core PCE month-over-month: if July's reading proves to be base-effect noise rather than trend re-acceleration, the September hike probability retreats and equities recover their footing.

Synthesized from 3 sources.