Nvidia trades at a trailing price-to-earnings ratio of 23, a significant discount to Costco's 51 and Walmart's 46—a gap that raises a critical question for growth-focused portfolios: Is the market mispricing one of these bets?
The P/E multiple reflects how much investors will pay for each dollar of current earnings. A higher ratio typically signals expectations of faster future growth or a stable, defensive business model. Costco's 51 multiple and Walmart's 46 multiple price in the market's conviction that these retail giants will sustain consistent earnings expansion, backed by recurring membership revenue and scale.
Nvidia's 23 multiple, by contrast, implies the market is pricing in more modest earnings growth despite the chip maker's stranglehold on AI infrastructure. That's the disconnect worth examining.
The bull case is straightforward: Nvidia controls the GPU market for AI training and inference at a moment when enterprise spending on AI is accelerating. If earnings growth over the next three to five years justifies a 35-40 multiple—a reasonable level for a company expanding at 30 percent-plus annually—today's price offers significant upside. The chip shortage cycles of 2021-2022 may have trained investors to be skeptical of semiconductor valuations, but the AI cycle is structurally different.
The bear case hinges on competition and saturation risk. AMD and Intel are closing the gap. Customers are exploring alternative chips. And at some point, demand for training chips moderates as models mature. If Nvidia's growth decelerates to mid-teens rates within two years, the 23 multiple is fairly priced—or even generous.
For investors deciding between these three stocks, the question is not which multiple is "correct" in isolation, but which company's growth rate will most surprise the market over the next 12 months. Retail is mature and well-modeled. AI infrastructure is neither.
