US Markets Close Lower as Fed Chief Kevin Warsh Signals Firm Inflation Stance, Sparking September Rate Hike Fears

US stock markets finished the trading session on a lower note as investors adopted a cautious stance following Federal Reserve Chairman Kevin Warsh’s hawkish remarks on inflation at the Jackson Hole symposium. Disappointing market hopes for a softer central bank policy, Warsh emphasized that the Fed would take further action if convinced that inflation is not moving decisively toward its 2% target, immediately escalating market anxieties regarding a potential interest rate hike in September.

Spiking Rate Hike Bets and Market Reaction

Following Warsh's firm address, traders aggressively repriced their expectations for the upcoming Federal Reserve policy meeting, splitting bets between a rate hike and a pause, whereas stability had previously been the favored outlook. Recent domestic inflation data has similarly failed to offer clear economic direction.

Commenting on the shift, Nationwide Chief Market Strategist Mark Hackett noted that Wall Street reacted sharply because the Fed chairman refused to back down from his strict 2-percent inflation target, dashing hopes of a policy pivot. Consequently, major indices retreated:

• S&P 500: Dropped 19.23 points (0.25%) to close at 7,711.76.

• Nasdaq Composite: Fell 138.93 points (0.52%) to settle at 26,402.42.

• Dow Jones: Found minor cushioning and support driven by gains in Salesforce.

Mixed Tech Performance and Individual Stock Movements

The broader technology sector experienced volatile, mixed trading. Chip giant Nvidia slid 4.6% following a previous session rally driven by strong forecasts, while Marvell Technology plunged 10.3% as investor concerns mounted regarding the timeline of AI chip revenue tied to its deal with Alphabet. Conversely, Alphabet gained 1.7%, Apple rose 1.6%, and Salesforce advanced 1.6% to support the Dow.

Meanwhile, individual corporate earnings and strategic news drove sharp stock movements across sectors:

• PayPal: Tumbled 12.7% following reports that a consortium comprising Advent and Stripe abandoned plans to acquire the payments company.

• Gap Inc.: Surged nearly 13% after naming Michael Francis as Old Navy's new CEO and upgrading its full-year profit outlook.

• Ulta Beauty: Slipped 4.2% after posting softer-than-expected second-quarter sales growth.

On the economic data front, the University of Michigan’s final Consumer Sentiment Survey printed at 51.7, closely aligning with economists' baseline forecasts.