Costco's Price Tag Is the Story, Not the Warehouse

Let's get the obvious out of the way: Costco is about to tell the market how it did in its fourth fiscal quarter, and the market already sort of knows the answer. Net sales are tracking to roughly $94.8 billion, EPS somewhere in the $6.50 neighborhood. The top line isn't the thriller here. Nobody's going to gas the stock because revenue came in at $94.8 billion instead of $94.9 billion.

So why does the chart look like a deflating balloon?

Because this is a moment where the whole premium gets put on a scale, and the scale has been creaking all year.

Here's the setup. As of September 18, Costco closed at $895.31 — down more than 2% on the week, sitting roughly 18% off its record high from May. It had traded near $945 in late August, right after Q3. Someone bought the narrative in summer and is now figuring out how to exit. The stock is inside its 52-week range of $844.06 to $1,096.50, which is a fancy way of saying the bulls still have room and the bears are comfortably perched overhead.

Now the part that actually matters.

The pre-released numbers are loud. Q4 net sales of $93.9 billion, up 11.3% year over year. U.S. same-store sales climbing 10.7%. Overall comps up 6.7% excluding gasoline and foreign exchange. Digital sales surging nearly 20%. Full-year FY2026 net sales hit $297.3 billion. This is a machine running hot.

So here's my problem with the crowd, and I'll say it plainly: the market is punishing Costco for a top line it already handed over, while ignoring that it's charging a multiple most companies would kill for.

Trailing P/E near 45x. For context, the S&P 500 sits around 23x, the Consumer Retailing industry near 17.6x. Forward P/E in the low-to-mid 40s. A PEG ratio of 3.76. Translation: Wall Street has priced this stock for perfection on growth, margins, and renewal rates simultaneously. When you price for perfection, you don't get rewarded for delivering it. You get punished mildly for merely meeting expectations, and punished hard for anything short.

That's the trap. And it's a real one.

The bears aren't wrong about the mechanics. Oppenheimer expects core Q4 EPS to miss. RBC is flagging fuel costs as a margin headwind. Q3 gross margin actually fell 21 basis points year over year, and SG&A deleveraged on higher healthcare costs and legal settlements. There are reports of a year-over-year membership decline, tied partly to fewer new warehouse openings in the big markets. Costco nearly doubled the price of Kirkland motor oil, which sounds like a rounding error until you remember the entire business model is the promise that Kirkland and everything else stay cheap. Break that promise in public and members notice.

And then there's the litigation. Costco is a plaintiff against the Trump administration over "Liberation Day" tariff refunds, after a Supreme Court ruling in February. The refund timing and import-duty treatment are still open. That's a variable sitting in the dark, and dark variables have a habit of resolving badly.

But here's where I part ways with the "it's just overvalued, short the tape" crowd.

The moat isn't imaginary. The membership-fee model, the disciplined SKU count, the Kirkland pricing power — these compound. Digital-enabled comps were up over 21% in Q3. Costco expanded its Uber Eats delivery from 17 to 47 states. The recurring-revenue engine is still turning, and it turns into margin that's almost unusually sticky.

The valuation complaint is the only legitimate one, and it's worth respecting. But 45x trailing isn't a signal to flee a compounder with this balance sheet — BofA cites a fiscal Q4 cash balance near $20.4 billion, debt-to-equity near 0.25. It's a signal to be patient on price and picky on entry.

The analyst targets tell you the disagreement is real and wide: BofA at $1,095, UBS as high as $1,275, Citigroup at $1,020, Guggenheim sitting it out at Neutral. That's a spread that says nobody actually knows what this stock is worth because nobody knows what the membership and margin story looks like six months out. The consensus clusters around $1,050 to $1,090. Everything above today's levels is a bet that earnings and renewals both come through clean.

So where does that leave me?

I'm not going to tell you to chase. At 45x, you don't chase — you wait. But I'm also not going to call this a sell on the merits. The business is doing exactly what it promised to do. The risk isn't the operations; it's the multiple, which is a lever, not a foundation. A small miss on comps or a soft renewal print won't break the company. It will compress the multiple, and at these levels that compression is where the pain concentrates.

My read: this earnings print is less a fundamental event than a valuation referendum. If renewals hold and margins hold, the stock absorbs the miss and re-rates. If either cracks, you're watching a 45x multiple behave like a 25x multiple, fast.

Own it, and you own a bet on the multiple staying intact, not on the business — because the business is fine. Don't own it, and you're fine too. The cleanest trade here isn't directional; it's waiting for the volatility to give you a better number, then being decisive when it does.

Costco just handed the market the answer on revenue. The question nobody can answer yet is whether anyone will keep paying up for it. That's the whole game.