Shares of Amazon.com Inc. dropped significantly as part of a broader tech sell-off that erased $770 billion from megacap technology companies. The downturn was triggered by former President Donald Trump's announcement of potential new tariffs on Chinese goods. Amazon's stock fell by approximately 5% during October 10 trading, contributing to a $121 billion loss in the company's market capitalization and wiping out its gains for the year 2025. The broader market also reacted negatively, with the Nasdaq falling 3.6% and the S&P 500 declining 2.7%, marking the worst performance for both indexes since April.