US stocks were mixed as traders looked ahead to Nvidia's earnings report, with Wall Street estimating $33 billion in revenue for the third quarter.Investors are eager to see if Nvidia's results can continue to show the strength of the artificial intelligence trade.Traders adjusted their expectations for Fed rate cuts after a slew of Fed speakers, with odds of a rate cut at the next policy meeting rising to 48%.Geopolitical tensions and rising hawkish comments from Fed officials added to market uncertainty.