Costco: A Durable Membership Moat at a Demanding Price
What the business is
Costco is a subscription engine dressed as a warehouse.
The merchandise operation is intentionally austere. Product markups are generally limited to about 11–14%, and the net margin is 2.9%. Rather than extracting the highest possible profit from each shopping trip, Costco uses low prices to make annual membership feel indispensable. The warehouse sells the goods; the habit sells the membership.
That membership is the economic center of the model. Costco had 68.3 million paid individual members in FY2025, while annual membership-fee revenue was about $5.3 billion, up 10% from the prior year. Those fees carry little variable cost and therefore contribute heavily to operating profit. Merchandise provides the visible bargain, while recurring fees provide much of the underlying earning power.
The moat is a useful flywheel: scale improves purchasing power, purchasing power supports lower prices, lower prices attract members, and additional members create more scale. Kirkland reinforces the arrangement through brand trust. Members reasonably expect Costco to protect their wallets rather than conduct experiments on their tolerance.
Pricing power resides mainly in the membership fee. In September 2024, the standard fee rose from $60 to $65, while the executive fee increased from $120 to $130. The latest FY2026 renewal rate remained 92.2% in the United States and Canada and 89.7% worldwide. Costco could seek more margin from merchandise, but refusing to do so is part of its customer proposition.
The moat also appears to be widening. Paid membership increased from 58.8 million in FY2023 to 63.7 million in FY2024 and 68.3 million in FY2025. Costco opened 27 warehouses in FY2025 and planned as many as 35 in FY2026. Its physical scale, purchasing economics and accumulated member trust are not easily copied by better software alone.
What the numbers say
The price-adjusted valuation presents a much less flattering picture than the operating record:
- Market cap (price-adjusted, 2026-10-13 close): $416.99 billion
- Owner-earnings yield (price-adjusted): 1.31%
- Share price (2026-10-13 close): $954.63
- 10-year Treasury: 5.22%
The owner-earnings yield trails the Treasury by 3.91 percentage points. That is a demanding starting point: the equity carries operating risk, competitive risk and valuation risk while offering substantially less current earning power per dollar of market value. Growth can narrow that gap, but today’s price already expects a generous helping of it.
The underlying business remains financially strong. Five-year average return on equity is 27.6%, and Debt/Equity is 0.11. Those figures fit the broader picture of a company that can expand without relying heavily on borrowed money.
Capital allocation has also been disciplined. Costco has raised its dividend for 22 consecutive years, most recently increasing the quarterly payment to $1.47 per share in April 2026. It returned surplus cash through a $12-per-share special dividend in January 2026, totaling about $5.3 billion. Repurchases were comparatively restrained at roughly $903 million in the preceding fiscal year, which is sensible when the shares command a rich valuation.
Reinvestment remains substantial. Capital spending was $5.5 billion in FY2025, with $6.0–6.5 billion planned for FY2026. Much of this supports additional warehouses, extending a model that Costco already understands rather than pursuing unrelated expansion. The allocation pattern is coherent: invest in proven growth, pay regular dividends, distribute genuine surplus cash and avoid treating repurchases as a ceremonial duty.
What Wall Street believes vs what I see
The supplied headlines reveal a divided tone, though not a comprehensive live consensus. “Costco Checks Out Strong” emphasizes operating performance. “Great Quarter, But The Valuation Still Prices In Excellence” separates admiration for the company from enthusiasm for the stock. “Where Does The Stock Go From Here? I Say Nowhere” is more openly skeptical and includes a rating downgrade.
Three headlines do not establish a market-wide change of opinion. They do, however, capture the central tension rather neatly: Costco can produce strong results while its valuation remains difficult to defend. A fine business and an attractive security are related concepts, not synonyms.
I see durable customer economics, restrained management and a widening membership base. I also see a 1.31% owner-earnings yield against a 5.22% Treasury. That arithmetic asks future growth and continued resilience to compensate for a large present disadvantage.
The optimistic case is that membership pricing power proves substantially greater than current owner earnings suggest. The adverse case is that convenience-led commerce gradually weakens warehouse visits and renewal behavior. The thesis calls for reassessing the moat if the United States and Canada renewal rate falls below 90%, with a decline below 88% representing a more serious break in the subscription argument. For now, the operating evidence remains intact. The valuation is the part behaving extravagantly.
Verdict
Verdict: pass.
The 1.31% owner-earnings yield is below the 5.22% Treasury, so Costco does not clear the rubric’s watch threshold. The 3.91-percentage-point shortfall makes this a valuation failure rather than a judgment against the company’s moat or capital allocation.
A lower price or higher owner earnings sufficient to move the yield above the 5.22% Treasury would change the verdict to watch, while circle would require the rubric’s additional margin-of-safety conditions.
This analysis is AI-generated, educational, and not investment advice. Figures may contain errors or be delayed. Disclaimer