Woofun AI data shows that US stock markets opened lower on July 17, with the Dow Jones declining 0.24%, the S&P 500 falling 1.15%, and the Nasdaq dropping 1.8%. The Philadelphia Semiconductor Index fell over 3%, approaching technical bear market territory.

Market data indicates significant declines in major tech stocks, including Nvidia down 2.2%, Qualcomm down 3%, Intel down 3.5%, Microsoft down 1%, and SpaceX down 3%. Consequently, Apple surpassed Nvidia to become the world's most valuable company by market capitalization.