Costco keeps 2.9 cents of every dollar it takes at the till. The market values it at more than forty times earnings. Those two numbers sitting side by side make Costco one of the most interesting valuation puzzles in the American market, and its 69 out of 100 on Investily's report card is a score with a very specific shape.
The score: 69/100
Costco loses almost no points on business quality. It loses them on price, and on a growth rate that is solid rather than exciting. This is close to the opposite of a company like Amazon, where the business metrics drag and the multiple looks cheap.
The margin is not the business
A 2.9% net margin looks alarming if you have learned that high margins mean quality. For Costco it is the strategy working as designed. The company deliberately sells goods at close to cost and earns its profit from membership fees. The thin margin is the mechanism that keeps members renewing.
The measure that exposes this is return on capital employed, which sits at 26.6% over the trailing year — up from 22.3% over three years and 21.7% over five, so it is improving rather than eroding. A company earning 26% on its capital while keeping 2.9% of revenue is telling you it turns that capital over very fast. Margin measures a slice of each sale. Returns measure the whole machine.
Growth: consistent, and slowing at the edge
Revenue grew 9.3% over the trailing year against 7.6% over three years and 9.5% over five. Operating income grew 11.4%, ahead of revenue. Free cash flow grew 20.4% — the one genuinely strong growth line on the card, and a useful contrast with the AI-capex megacaps whose cash flow is going the other way.
- Debt to equity: 0.3
- Cash return on capital: 19.3%, close to the accounting figure
- Consensus revenue growth next year: 2.8%
- Consensus earnings growth next year: 3.3%
Those last two lines are the ones to sit with. Analysts expect growth to fall to roughly a third of its recent pace.
Valuation: the whole argument
Costco trades in the mid-forties on trailing earnings and around twelve times book value. Weighted against its growth rate, its PEG sits above 3.5 — one of the highest readings you will find on a company of this quality, and far above the 1.0 that usually marks the line between cheap and expensive.
Put plainly: you are being asked to pay a technology multiple for high-single-digit growth. The market is not mispricing the business — it has correctly identified an exceptional retailer with a durable membership moat. It is charging you the full value of that recognition and then some.
The bottom line
Costco is a case where the score and the story point in the same direction. The business earns a genuine 69 — improving returns on capital, real free cash flow growth, a conservative balance sheet, and a model that has compounded through every retail cycle of the last thirty years.
What it does not have is a price that leaves room for disappointment. At a mid-forties multiple on 3% expected earnings growth, the stock needs the moat to hold and the growth to reaccelerate. One of those is very likely. The other is the risk you are actually taking.