The Motley Fool·2026-03-05 04:30Core Insights - Nvidia and Amazon are central players in the AI boom, both experiencing accelerated revenue growth recently [1] - Nvidia's revenue increased by 73% year-over-year to $68.1 billion, while Amazon's sales rose 14% to $213.4 billion, indicating a more diversified operational base for Amazon [2] Nvidia - Nvidia's fiscal fourth-quarter results were driven by its data center segment, which saw a 75% year-over-year revenue increase to a record $62.3 billion, primarily due to AI demand [4] - Despite impressive results, Nvidia's stock fell post-reporting, reflecting high market expectations [5] - Management anticipates continued strong growth, projecting fiscal first-quarter revenue of about $78 billion, representing 77% year-over-year growth [5] - Concerns exist regarding Nvidia's long-term growth prospects due to the cyclical nature of the semiconductor industry, which could lead to compressed profit margins if demand cools or competition increases [6] Amazon - Amazon's AI growth is anchored by Amazon Web Services (AWS), which saw Q4 sales increase by 24% year-over-year to $35.6 billion, an acceleration from 20% growth in Q3 [7] - Amazon's e-commerce sales rose 10% year-over-year, third-party seller services increased 11%, advertising revenue grew by 23%, and subscription services rose 14% [8] - Amazon operates on lower margins compared to Nvidia, which reduces the risk of margin compression [9] Investment Comparison - Both companies are strong businesses benefiting from technological advancements, but Nvidia's financial results are concentrated in a single, cyclical sector, raising concerns about sustainability [10] - Amazon offers more durability with a less cyclically sensitive and diversified business model, minimizing pricing power erosion risks [11] - Amazon's stock trades at a cheaper valuation of 30 times earnings compared to Nvidia's 37 times earnings [11]