Costco Is Down 17% Despite Record Profits. What $10,000 of It Is Really Buying

Costco just delivered what is, by almost any measure, the best stretch in its history. Its fiscal third quarter — the 12 weeks ending in May — set records on both lines of the income statement: $69 billion in sales, up 11.6%, and a record $2.2 billion in net income, with profit per share up about 15%. More than 82 million people pay to shop there, and 92.2% of them in the U.S. and Canada renewed their membership.

And the stock is down roughly 17% from its mid-May high.

That gap — the business doing its best ever while the shares fall — is the whole story. It is also the reason a headline asking "what is $10,000 of Costco worth by September 2027" cannot honestly be answered with a single number. Nobody can. Anyone who prints one is guessing, and guessing at 45 times earnings is expensive guessing.

What you can do is work out what the number actually depends on, then judge which of those pieces is solid and which carries the risk. That is a better question, and it changes how you would invest the $10,000.

The business is a toll booth, not a discount store

The first thing to understand is what Costco actually sells, because it is not the groceries. The merchandise itself runs thin — its margin on goods is only about 11% — but the membership fee is nearly pure profit, and members collectively pay more than $5.9 billion a year for it. That fee is the real engine: most of Costco's operating income is built on it, not on the beef or the eggs.

This is pricing power in a different form than you'd expect. A normal retailer raises prices to protect its margin. Costco does the reverse — it keeps prices low and charges a fee to do so — and 92% of members pay it again every year. In an inflation world that runs hot, which I believe is more likely than the 2% orthodoxy wants to admit, a business that sells the essentials you cannot skip and collects a durable, near-all-profit toll is exactly the kind of real-economy cash flow I want to own.

The dividend, by contrast, is not why you would buy this. It yields about 0.6% — below almost any savings account's cousin. It has been paid for 22 straight years, and the most recent increase, in April, lifted it 13% to $1.47 a quarter. It pays out only about a quarter of earnings and is backed by roughly $8.8 billion of free cash flow. So it is a well-funded, durable dividend. But the point of the dividend here is that it proves the balance sheet, not that it pays your bills. I would not call this a yield shortcut. It is a compounding machine that hands you a small, growing check as a side effect.

The $10,000 is really a bet on the multiple

At roughly $905 a share, $10,000 buys about 11 shares. The value of those shares a year from now is set by exactly two things: how much Costco earns, and what the market pays for each dollar of those earnings — the multiple, or P/E. Today the market pays about 45 times Costco's trailing earnings. That is a rich price for a grocer, and it matters more than the headline.

Costco earnings over the next 12 months	Market pays 35x	38x (≈ Walmart)	45x (today)
Flat (about $20 a share)	~$7,700	~$8,400	~$10,000
+8%	~$8,300	~$9,000	~$10,800
+12%	~$8,600	~$9,400	~$11,100

Those cells are scenarios, not predictions — they just show what the $10,000 becomes under each combination of growth and multiple. Read them down, not across.

Go down any column and the lesson is the same. If the multiple holds at 45x, then just 8% more earnings — a very ordinary year for this business — gets you to roughly $10,800. Flat earnings, and you finish exactly where you started, despite a company "doing its best ever." Now slide one column left, to about 38x, roughly where Walmart trades, and that same 8% growth buys you flat-to-slightly-negative. The business compounding and your money not moving at the same time is the uncomfortable core of a stock at 45 times earnings: solid growth is not the same thing as a solid return, because the price you paid already assumed the compounding.

Growth is the more secure variable here — this is a business that has compounded for decades and just set records. The multiple is the contested variable. The multiple is where all the risk in your $10,000 lives.

Two things could move that multiple

The stock has already started telling you why it is nervous.

The first is the pace of sales. Comparable sales — how much the existing stores grew, the cleanest single read on demand — climbed all the way up through the spring, then slowed in June, from 12.5% in May to 8.8% in June. July partly recovered, with U.S. comps back around 10%. So is June a one-month blip, or the first hint that growth is settling into a lower gear? At a 45x multiple the market has effectively priced in "Costco keeps posting record quarters," and there is little room for error at that level. If comps quietly drift into the low single digits, it is the multiple that falls first.

The second is a bill that has not been sized yet. In February the Supreme Court ruled the broad IEEPA import tariffs unlawful, which makes importers like Costco entitled to claw back the duties they paid. A class action filed this spring wants Costco to hand the overcharges it passed on to shoppers back to the customers, arguing Costco would otherwise keep the difference. Roughly a third of Costco's U.S. merchandise is imported, so the exposure is real — and it is not quantified in the filings yet. The number to watch is not the lawsuit's headline; it is whether Costco discloses a specific provision or dollar figure. That, more than anything, is the unpriced uncertainty sitting under the shares.

The next clean read on both comes with the fiscal fourth-quarter report on September 24.

So what does the $10,000 depend on

Not on a number. And not really on Costco's ability to keep selling groceries — that part is nearly settled. It depends on the market keeping its faith in a 45x multiple while sales stay fast and the tariff question stays small. If both hold, the compounding does the work and the small dividend quietly grows on cost. If comps slow, or the tariff liability finally gets a price tag, the multiple comes down first and takes your $10,000 with it.

This is not a stock I would buy for income, and at this price it is not a bargain you buy for safety either. It is a real-economy, pricing-power name at a premium that is priced for continued perfection. That does not make it a bad investment — it makes it an expensive one, where the risk is the price you pay, not the business you are buying. The decision worth making is not "will it hit $10,500." It is "am I willing to pay 45 times earnings, with the tariff bill still unpriced, for a business I am confident will keep compounding?" That is a much more honest question, and the answer to it — like it or not — is the entire investment.