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Massive Update for Costco Stock Investors

Parkev Tatevosian, CFA•Sep 25, 2026

Summary

Parkev highlights that Costco is currently facing a stock price decline of approximately 20% from its highs, trading below $900. Despite this, the underlying business remains exceptionally strong, characterized by impressive sales growth in the US and Canada and a successful expansion into digital channels. Parkev emphasizes that Costco operates with a unique, low-margin business strategy designed to pass savings directly to customers, which fosters extreme loyalty, evidenced by a member renewal rate of over 90% in the U.S.

Regarding financial performance and operational efficiency, Parkev notes that Costco achieves industry-leading returns on invested capital of 22.6%. This is driven by high inventory turnover and a conservative store expansion strategy that maximizes revenue per location. Parkev points out that Costco's operating profit margin is modest at 3.8%, as the company focuses on volume and membership fees rather than high markup on products.

From a valuation perspective, Parkev notes that the forward price-to-earnings ratio has dropped to 36, which is nearly in line with competitors like Walmart and represents a rare moment where the stock is trading near its fair value. Utilizing a discounted cash flow model, Parkev calculates a fair value of $843, suggesting that the current market price of $897 represents only a 6% premium, which falls well within an acceptable margin of safety.

Costco (COST): Parkev initiates a "buy" rating for the first time in years, noting that the stock is finally approaching a fair valuation relative to its historical premium. Parkev suggests a strategy of splitting a potential investment by buying half before and half after the upcoming quarterly earnings report. Parkev views this as a rare opportunity to acquire shares in a high-quality company at a reasonable price point.

Mentioned Stocks

COST
Sentiment: BUYAction: RECOMMENDED

Reasoning: Parkev explicitly upgrades the stock to a "buy" for the first time since 2021/2022 because the valuation is now within a reasonable margin of safety. Parkev notes a fair value of $843 against a market price of $897, suggesting the premium is small enough to warrant a purchase before the earnings report.

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