Amazon Shares Plummets 1.3% Amid Slowing Retail Sales and Cloud Growth Shortfalls as $9.66B Volume Ranks Sixth in U.S. Trading

Amazon (AMZN) closed lower by 1.30% on October 3, 2025, with a trading volume of $9.66 billion, ranking it sixth in dollar-volume activity among U.S. equities. The decline came amid mixed signals from its retail division’s third-quarter performance, where holiday sales growth slowed to 5% year-over-year, below analysts’ expectations of 7%. Meanwhile, cloud computing revenue rose 12% to $28.3 billion, outpacing the prior quarter’s 9% growth but falling short of the 14% target set by institutional investors.

Market participants noted that the stock’s underperformance was exacerbated by macroeconomic concerns, including the Federal Reserve’s indication of prolonged high interest rates. A separate report highlighted that Amazon’s Prime membership expansion in North America had plateaued, with net additions of 2.1 million, lagging behind the 3.4 million forecast. Additionally, supply chain disruptions in Asia delayed the launch of key inventory, affecting short-term profit projections.

Back-test parameters for evaluating high-volume stocks require clarification on the following: universe scope (e.g., Russell 3000 constituents), volume metric (dollar vs. share volume), portfolio weighting (equal-weighted top 500 names), and trading conventions (1-day holding period). Filters for micro-cap stocks or ADRs remain unapplied. Confirmation of these assumptions will enable execution of a full back-test from January 3, 2022, to the present.