What Keeps Costco Wholesale Stock Grinding Higher

Everyone is watching the slowdown in new sign-ups, but the real power is coming from a much more valuable group of shoppers.

You've probably seen the headlines. After years of relentless growth, the pace of new members joining Costco (COST) has cooled. The stock, a longtime market darling, has been treading water lately, trading about 13% below its 5-week high.

The latest quarter saw total paid members grow 4.1%, a number one analyst on the earnings call described as the "lowest level in some time." For a business built on membership fees, that sounds like a problem. But look a little closer, and you'll see the headline number is masking a much more powerful, and potentially more profitable, trend.

The 9.6% Growth That Really Matters

Forget the 4.1% figure for a moment. The real story is happening one tier up, with the company's paid executive memberships. This group, which pays more for added benefits like an annual reward, grew 9.6% in the last quarter. That's more than double the rate of the overall member base.

Why is this the number to watch? Because as management points out, these members are a distinct and more valuable group. When shoppers upgrade to an executive level, "they generally spend more with us and visit more frequently." The strategy extends beyond collecting more fees upfront to cultivating a stickier, higher-spending customer who is more deeply embedded in the Costco ecosystem. While total new member growth may be normalizing, the company is successfully upselling its existing base into its most lucrative tier.

Also read our breakdown on The Real Risk Inside Nike Stock to see how concentration and hidden vulnerabilities can quickly shift the narrative on a retail giant.

Fueling the Upgrade Engine

This shift isn't happening by accident. Costco is actively pulling levers to make that upgrade more compelling. Take the gas pump. The company just posted "record-breaking volumes" in its gas business, a direct result of leaning into its price leadership when consumers are feeling squeezed. Management noted this drove many people to "use our gas stations for the very first time."

That's the hook. Once members see the savings at the pump, the appeal of earning that reward on those fill-ups, and everything else, becomes much stronger. The same logic applies to the price cuts on everyday items like eggs and beef. Rather than simple margin pressures, they are strategic investments in demonstrating value, driving traffic, and giving 82.9 million members a recurring reason to pay up for that membership.

A Digital Layer Deepens the Moat

This quiet upgrade cycle is being reinforced by a surprisingly strong digital push. Costco's digitally enabled comparable sales surged 21.5% last quarter. The company is even seeing "triple-digit growth" in traffic from AI-powered searches, which it says has the "highest conversion rate." Each digital improvement, from a better app to personalized recommendations, makes the overall membership more valuable and the executive tier that much harder to pass up.

So, while the market worries about the pace of new sign-ups, Costco is busy building a more valuable version of itself from the inside. The critical question isn't how fast the company can grow its total member count, but how quickly it can enrich its existing base. As long as that executive tier keeps swelling, the engine for steady, compounding growth looks firmly in place.

How Do You Spot This Before The Crowd Does?

An opportunity like this only counts once it starts showing up in the numbers, and the first hard place it surfaces is management's guidance. The moment a company can actually see the new revenue coming, it raises its forecast, and a raised forecast that the market is already rewarding is about the cleanest proof that a story like this is turning real. Nordson (NDSN), Palo Alto Networks (PANW), and Parker Hannifin (PH) are flashing exactly that signal right now. Our Guidance Momentum screen tracks every S&P 500 name where a rising forecast is already meeting real price momentum, so you can hunt for the next opportunity like this one while it is still early. And if you would rather own the whole theme than bet on this one name, a consumer staples ETF like XLP holds the entire group.

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Spotting upside in a name is the fun part - but letting a single winner grow into most of your portfolio is how good years get undone in one bad one. Concentration cuts both ways, and selling to spread the risk hands a chunk to the IRS. There is a way to lock in the gains and diversify without the tax hit.