Costco Wholesale Corporation COST

Key data

The business

Costco runs 933 warehouses in 14 countries, 641 of them in the United States, and sells a deliberately narrow selection, roughly 4,000 items against a supermarket's 30,000, in bulk at a razor-thin markup. Gross margin runs about 13%, less than half a normal grocer's, and net margin is 3%. The company barely makes money selling you the groceries. It makes money on the membership: you pay a yearly fee to be allowed in, and that fee, which costs Costco almost nothing to provide, drops nearly whole to operating profit. Everything else, the hot dog, the cheap gas that pulls cars into the lot, the rotisserie chicken, exists to get you to renew. The moat is scale bought and handed straight back: Costco buys enormous volumes, takes the lowest margin in retail, and passes the savings to members so no rival can underprice it. The thing a member actually holds is the Kirkland pack that costs less than the national brand beside it and is often made in the same plant.

The numbers

Revenue and profit both compound, steadily, through every economy.

The last reported quarter, ended May 10, put revenue up 11.6% and profit up 15% on the year before, the strongest rate in the set. One blemish: earnings of $4.93 came seven cents under what analysts expected, the first miss in four quarters, as thin merchandise margins absorbed higher costs. Q4 is Costco's 16-week quarter, which is why its revenue towers over the rest, so ignore the level there and read the trend.

Over five years revenue grew about 9% a year and earnings about 13%, a machine that has not skipped. The July sales update showed it holding: comparable sales up 8.3% over 44 weeks, 6.7% in the U.S. once gasoline and currency come out, and quickening to 7.6% in the most recent five weeks.

The worry a quarter ago was that traffic might go flat while renewals slipped under 90%; it did the opposite, comps accelerated and digital orders jumped 21%, so that break did not trigger. Here is what you are paying for. Extend 13% earnings growth five years and EPS reaches roughly $33 from today's $18.21. Put the stock on 35 times, the top of its own normal range, and you get about $1,150, a little above today's $916; put it on peers' 23 times and you get $760, well below. The business almost certainly keeps compounding. What you buy at 46 times is the bet that the market keeps paying a premium multiple the whole way. That is the question is not whether Costco grows, it is whether the multiple holds, and the print that settles it is any quarter where U.S. comps ex-gasoline slip below 5% with the stock still in the 40s.

Management

Insiders sold about $19.0 million across 14 sales in the last year and bought nothing; the largest was an officer's $3.1 million in September. For a $406 billion company run by career operators, that is routine paycheck-selling, not a signal, and the plan status behind the sales is not disclosed. Capital allocation says more. Buybacks are a token $903 million last year, barely 0.2% of the company, because Costco prefers dividends and periodic special payouts, and cash has climbed to $18.9 billion, up $4.8 billion in nine months, with more cash on hand than debt. On execution, management cleared the earnings estimate in three of the last four quarters and missed the latest by seven cents, a habit of guiding low and clearing the bar.

How it fails or surprises you

The multiple, not the business. At 46 times trailing earnings, against a 12-year range of 26 to 54 and a typical band of 29 to 40, with peers near 23, the stock is priced for perfection. Earnings can compound 12% and the stock still go nowhere for years if the multiple drifts back to its own norm. The first sign is comps below 5% ex-gas while the multiple sits in the 40s.

Tariffs against a 13% margin. The filing warns tariffs are "more likely to adversely impact rather than improve" results. On a 13% gross margin, small input-cost increases that cannot be passed through hit profit hard; the Q3 seven-cent miss on 11.6% revenue growth is exactly this fact, and the compounding read explains it least well. Watch merchandise gross margin quarter to quarter.

A special dividend or fee increase (right tail). Cash is piling up, $18.9 billion and net cash, with the last special paid in early 2024, and a membership-fee raise flows almost entirely to profit and recurs every few years. Neither is in consensus. The print is a declared special dividend or a fee-increase announcement.

Closing thoughts

The market already prices everything about Costco's business. It is among the most-owned, most-scrutinized quality names on earth, and its 46-times multiple against peers at 23 is the market saying so out loud. The edge on offer is not insight into the business, which is pristine, it is a view on duration: whether 9% sales and 13% earnings growth run long enough to justify a premium that already assumes they will. The buyer on the other side is paying for another decade of flawless compounding, and the skeptic is betting the multiple mean-reverts faster than earnings climb. The fatter tail is the downside, not because anything breaks operationally but because the price leaves no room for it: a slide from 46 to 35 times costs a quarter of your money even as profits rise.

The bet is still that people keep paying the yearly fee and keep renewing, because the gas and the hot dog and the Kirkland pack keep pulling them back. What breaks it is the price you pay for that certainty, not the certainty itself: the pair to watch is U.S. comparable sales ex-gasoline and the trailing multiple, and the day comps drift toward 5% while the stock still fetches 40-plus times, the compounding stops bailing out the premium.