COST Research Update — April 20, 2026
Updated Thesis
Costco Wholesale Corporation operates a global membership-based warehouse club model that leverages scale, low costs, and superior employee retention to deliver consistent revenue and earnings growth. The company reported $269.9 billion in net sales for fiscal 2025 with an 8% year-over-year increase, driven by strong segments in Foods and Sundries and membership fees exceeding $5.65 billion in the most recent quarter. Despite its high-quality business model and resilient growth, Costco is currently overvalued with a stock price 19.1% above its fair value estimate of $808.71, trading at a trailing P/E of 51.93 and EV/EBITDA of 30.88, reflecting expensive valuation multiples relative to its historical five-year range.
The investment grade as of this refresh is D — solid business quality. High-tier business, expensive valuation with 19.1% downside to $808.71 fair value
Key Metrics at a Glance
- Revenue growth: +9.2% year over year
- Net margin: 3.0%
- Forward P/E: 51.9x
- Fair value upside: -19.1% to our estimate of $809
Current price: $999.89
These figures reflect our most recent data pull and are one input into a multi-factor valuation framework.
Our 12–18 Month Outlook
Quality companies held over a multi-year horizon benefit from compounding fundamentals and the patience to ride through short-term volatility. Costco Wholesale Corporation remains in our covered universe with a solid-quality assessment. We update research when material data changes — earnings revisions, management shifts, or regime changes in valuation — not on every price fluctuation.
Long-term accumulation of quality businesses at fair or better prices is the core of the Patient Accumulator approach. Research updates like this one inform whether to add, hold, or wait for a better zone — not whether to react to short-term price moves.
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