S&P 500 Gains and Losses Today: Amazon Stock Surges as Cloud Business Boosts Earnings; DexCom Drops

Amazon shares closed at an all-time high Friday after the tech giant posted better-than-expected earnings. Peter Kneffel / picture alliance / Getty Images Close Key Takeaways estimates, DexCom's management team cautioned that 2026 revenue growth could fall short of expectations. Executives also addressed concerns about DexCom's flagship G7 sensor following reports of quality issues, noting that the company fixed a problem with the product earlier this year and pointing to efforts to improve its customer ser ...