Costco's $275 Billion Revenue Milestone Changes the Multiple Conversation

Five years ago, Costco reported $166 billion in revenue. Fiscal 2025 came in at $275 billion. That is $109 billion of revenue addition in five years, executed at essentially constant operating margins, which implies structural volume growth, not pricing-led mix improvement.

The membership economics are what make the business work. Annual membership fees contribute an amount approximating 70% of operating income in most years. The renewal rate sits above 92% globally and above 93% in the US. A subscription business inside a retailer, where the subscription fee alone covers most operating costs.

The share price journey tracks this mechanically. From roughly $375 five years ago to $995 today; a 165% return. The multiple re-rated from mid-30s to high-40s over the same period. Earnings grew, and the market decided the earnings deserved a higher multiple. The question on the table this week is whether that re-rating has overshot.

At $995 and a 49x forward multiple, Costco is being priced for roughly 10% annual earnings growth over the next decade with no multiple compression. Let that sink in. The market is implicitly saying that Costco will still trade at 49x in 2036, with earnings ~2.6x higher than today.

That is an extremely strong forecast. It is also not obviously wrong.

Run the algorithm. Comparable club sales typically grow at 5-7%. Warehouse count adds another 2-3%. Pricing (partial pass-through of inflation) adds another 1%. That is 8-11% top-line growth on a durable basis. Operating margins are stable at 3.6-3.7%; the business is not a margin expansion story. Net income growth tracks revenue growth plus buyback accretion. Share count shrinks 0.2-0.4% annually. Total return math points to 10-12% per year if the multiple holds.

The risk is not that the earnings engine breaks. The risk is that the multiple compresses. At 49x forward, there is no room for disappointment. A single miss on comparable sales, a single quarter where the renewal rate dips, and the multiple can contract 10-15% before the fundamentals even adjust. That is the signal setup that makes entries difficult at current prices.

Walmart trades at 37x forward earnings with 6.2% operating margins and 4% revenue growth. Target trades at 15x with 5.1% operating margins and low single-digit growth. Neither gets close to Costco's multiple. Neither has Costco's renewal economics.

The recent viral article comparing 32 items between Walmart and Costco found one retailer 26% cheaper. That specific data point matters less than the attention it received. Consumers are actively shopping the price differential. The membership model only works as long as the value proposition stays sharp. Costco's entire strategic discipline is around holding gross margin below 13% so that the savings visibly accrue to members. The moat is the discipline, not the size.

The closest analogue is Amazon Prime. Same structural logic; a subscription fee that unlocks access to a value-maximised offering, with renewal rates functioning as the leading indicator for business health. Amazon's Prime business has compounded at mid-teens for a decade. Costco's membership fee revenue has compounded at 9-11%. The trajectory is similar; the moat quality is arguably deeper at Costco because the pricing discipline is harder to replicate than the logistics network.

Two things in the FY25 print stand out.

First, the operating margin expansion from 3.65% to 3.77%. That is 12 basis points, which sounds trivial until it is converted to dollars. At $275 billion of revenue, 12 basis points is $330 million of additional operating income. Small percentage moves at this scale are absolute-dollar meaningful.

Second, the gross margin held at 12.8%. Costco has been running the same playbook for two decades; hold gross margin flat, let the membership fee carry the P&L, and let leverage on the fixed cost base drive EBIT growth. The FY25 print shows the playbook working exactly as designed.

The Signals Desk reads this as a quality confirmation, not a thesis inflection. Nothing fundamentally changed. The system is producing the outputs the model predicts. The stock price is debating whether to pay 49x for that predictability. Historically, when Costco has traded above 45x, forward one-year returns have been 4-6%, below the long-run average. Above 50x, forward returns have been negative in three of four cases. The multiple matters, even for great businesses.