The stock market sees significant turmoil as Microsoft leads a selloff in the tech sector, resulting in a $357 billion loss in market capitalization, the largest decline since 2020. Major indexes like the Nasdaq and S&P 500 have closed lower, reflecting a wider downturn amid poor earnings results from the tech giant. The decline has triggered concerns over AI spending as investors react to mixed earnings reports, with some firms like Meta and Tesla showing resilience. As Wall Street grapples with these fluctuations and gold prices surge, analysts warn that the software sector is trending towards a bear market.