US stocks today: Wall Street edges higher on quarter-end optimism as Nvidia rebounds

US markets saw a mixed trading session as investors weighed a rebound in AI stocks against persistent concerns about interest rates and global tensions. While major indices showed modest gains, the S&P 500 and Nasdaq are set for their first monthly dip in three months. Stronger-than-expected jobs data hints at a resilient economy, but also fuels inflation worries and potential Fed rate hikes.