The Story

Costco is probably the most boring Hall-of-Fame story. While Apple invented iPhones, Amazon AWS, and Nvidia AI chips, Costco runs concrete-floored warehouses with aluminum racks where members buy toilet paper in 36-roll packs. And yet the stock has risen 1,100x between 1985 and 2026 — annualized at 18.7%.

The story started in 1976 with Sol Price founding Price Club, the first membership warehouse club. Jim Sinegal worked for Price for years and in 1983 founded Costco in Seattle together with Jeff Brotman. In 1993 the two firms merged into PriceCostco; Sinegal became CEO, Costco effectively absorbed Price. The December-1985 IPO at $10 means a $1,000 investment then is worth more than $1.1M today.

What made Costco different: Sinegal didn’t simply sell in warehouse format. He sold a contract with the customer: “You pay us $65/year membership. In exchange we sell everything below 14% markup — period. We curate for you, we negotiate for you, we don’t take the margin out of the sale price, we take it out of the membership fee.” That inversion of retail economics was revolutionary. At Walmart margins come from the spread; at Costco from the membership. That makes Costco effectively a subscription service that happens to also sell groceries.

What got it into the Hall of Fame

The moat is membership loyalty. 92% of Costco members renew every year — a renewal rate that makes Netflix and Amazon Prime look ordinary. Why? Because the membership fee amortizes itself. A family that shops weekly at Costco saves $800-1,500/year vs traditional grocery. The membership cost is negative in the customer economics. That inverts the typical subscription question “is it worth it?” — at Costco the answer is yes after the second big shop.

The second factor is Kirkland Signature. The private label is roughly 30% of revenue, at higher margins than branded products. Kirkland Vodka is marketed as Costco’s own Grey Goose (at 50% of the price). Kirkland batteries are made by Duracell. Kirkland diapers come from a P&G plant. Costco has buyer leverage because it controls 5%+ of US consumer spending — and uses it to manufacture private-label products that are quality-identical to brands but 20-30% cheaper.

Third: employee policy. Costco pays well above industry — averaging $25/hour plus benefits. Employee turnover is a fraction of Walmart’s. That not only lowers training cost but also delivers a noticeably better service experience in the warehouse. Anyone who has ever shopped at Costco has felt the difference vs Walmart — staff stay longer, know the products, are friendly. That reinforces member loyalty.

Where things stand in 2026

Costco trades at over $1,000 per share in 2026 with a market cap above $450B. The 2023 membership-fee increase (to $65 standard, $130 Executive) delivered a profit bump with no membership loss — a sign of extreme pricing power. The stock trades at 50x P/E, historically high for a discount retailer. But the logic: Costco isn’t a retail business; it’s a subscription-plus-volume business, with 92%+ renewals — which justifies higher multiples.

Risks: first, valuation is demanding; any wobble would temporarily compress the stock 30%. Second, international growth is decelerating — Costco already covers 110+ markets that can support a club. Third, e-commerce is not Costco’s strength (unlike Walmart). But these are risks on a #1-Hall-of-Fame compounder.

Investor takeaways

Three lessons. First: subscription models beat margin models. Costco earns 14% gross margin on products and 100% margin on memberships. The latter is where the value is created. Second: employee investment pays off in capital terms. Higher wages = lower turnover = better service = higher member loyalty = higher lifetime value. Third: economic leverage can be quietly powerful. Nobody talks about Costco the way they talk about Apple, but 18.7% CAGR over 40 years is more impressive than most “tech-Hall-of-Fame” stories.