Stock Market Today, March 27: Amazon Falls as AI Spending Raises Margin Pressure

By Eric Trie – Mar 27, 2026 at 5:21PM ESTExpandNASDAQ: AMZNAmazonToday's Change(-3.89%) $-8.07Current Price$199.47Key Data PointsMarket Cap$2.2TDay's Range$199.14 - $206.6252wk Range$161.38 - $258.60Volume2.6MAvg Vol50MGross Margin50.29%Amazon (AMZN 3.89%), global e-commerce and cloud computing services provider, closed Friday at $199.34, down 4.02%. The stock moved lower during the regular session as reports tied the drop to worries about rising AI-related capital spending, tougher macro and regulatory headwinds, and slowing retail growth. Investors will be watching how future AWS and retail profitability absorb heavier AI investment.The company’s trading volume reached 55.4 million shares, which is nearly 13% above compared with its three-month average of 49.1 million shares. Amazon went public in 1997 and has grown 203481% since its IPO. How the markets moved todayThe broader markets weakened Friday, with the S&P 500 (^GSPC 1.67%) closing at 6,378.85, down 1.67%, while the Nasdaq Composite (^IXIC 2.15%) finished at 20,948.36, falling 2.15%. Within e-commerce and cloud computing, industry rivals Alibaba Group (BABA 2.17%) closed at $122.69 (-2.17%) and Walmart (WMT +0.58%) finished at $122.89 (+0.58%), underscoring mixed peer performance.What this means for investorsAmazon shares fell as concerns around rising AI capital spending and softer growth expectations weighed on sentiment, with same-day reports pointing to pressure from higher investment needs, macro headwinds, and regulatory uncertainty. The move suggests investors are placing greater weight on how quickly Amazon’s expanding AI efforts within AWS translate into measurable revenue and profit growth, rather than on the scale of those investments alone.At the same time, Amazon’s plans to extend AI capabilities into physical retail and logistics indicate that spending is broadening beyond cloud. While these initiatives could support future efficiency and new revenue streams, they also raise the risk of near-term margin pressure if returns take longer to materialize. Investors will be watching whether AWS's growth and AI-driven demand can accelerate enough to justify the current investment pace without further reducing profitability.Read NextMar 27, 2026 •By Keithen DruryGot $5,000? Here Are 3 Fantastic Stocks to Buy Now.Mar 27, 2026 •By Prosper Junior Bakiny1 Underrated Reason to Invest in Amazon StockMar 26, 2026 •By Geoffrey Seiler2 AI Stocks That Are Cheaper Today Than They Were on Jan. 1 -- for No Good ReasonMar 26, 2026 •By Keith SpeightsBetter Stock to Buy Right Now: Amazon vs. CostcoMar 25, 2026 •By Keith NoonanAmazon Is Entering the Humanoid Robot Market. 3 Important Things to Know About the Fauna Robotics Acquisition.Mar 25, 2026 •By Dave KovaleskiMy Top 2 Megacap Stocks to Buy After Walmart's Latest PullbackAbout the AuthorEric Trie is a Motley Fool contributing stock analyst covering technology and semiconductors, healthcare, financial services, and consumer sectors. Previously, he worked in investment analysis and financial writing. He holds a B.A. in Philosophy from Rutgers University. Eric lives in New York City and is an avid sports fan.CMFIdeaMachineStocks MentionedAmazonNASDAQ: AMZN$199.47(-3.89%)-$8.07Alibaba GroupNYSE: BABA$122.70(-2.16%)-$2.71WalmartNASDAQ: WMT$123.05(+0.71%)+$0.87*Average returns of all recommendations since inception. Cost basis and return based on previous market day close.