Own Costco For Its Value Focus? Dollar Tree Is Making A Case.

Costco is the undisputed king of value retail, but slowing growth and a rich valuation clash with Dollar Tree’s rising profits and a rare guidance upgrade.

If you own a stake in the American consumer’s relentless hunt for value, you likely own it through one of two doors: Costco Wholesale (COST) or Dollar Tree (DLTR). Both are built to thrive when shoppers prioritize price, making them two sides of the same coin. But a sharp divergence in their recent performance and forward outlook demands a closer look. While Costco’s stock has cooled, Dollar Tree’s has rallied, and the underlying numbers suggest this isn’t random.

For an investor wanting exposure to this theme, the question is which stock offers the smarter path from here. The obvious answer has long been Costco, the premium operator with an unbreachable moat. The evidence today, however, points in a more surprising direction.

The Clearest Signal: One Raised Its Forecast, The Other Is Slowing

Decisions are about the future, and the cleanest signal of a company’s future is its own forecast. Here, the contrast is stark. In its latest report, Dollar Tree explicitly raised its full-year profit guidance. Management now expects 2026 adjusted earnings per share between $6.70 and $7.10, a material increase driven by operational improvements.

Costco, which doesn’t issue formal guidance, offered a more mixed forward look. While adjusted comparable sales remain strong, growing 6.6%, a critical engine is sputtering. Growth in new paid members slowed to 4.1%, a figure one analyst on its earnings call described as the “lowest level in some time.” Since new members ramping up their spending is a key driver of future growth, this slowdown is a significant flag for investors.

Which Profit Story Looks More Durable?

The divergence continues on the bottom line. Dollar Tree’s gross margin expanded by 120 basis points in its last quarter, a direct result of management getting a handle on its business. The company is “starting to bend the curve on shrink,” a sign that operational discipline is taking hold. This isn’t a hope; it’s a delivered result that flows directly to profits, fueling a 38% jump in adjusted earnings per share.

Costco, meanwhile, is seeing its profitability squeezed. To drive sales, the company “invested in lower prices for our members on several everyday items.” The result was that its core-on-core margins, a key measure of underlying profitability, fell by 9 basis points. While serving the customer is Costco’s mantra, its profit margins are contracting, while Dollar Tree’s are expanding.

The Price You Pay For That Story

This brings us to valuation, which should always be weighed against a company’s forward prospects. Costco trades at a price-to-operating-income multiple of 35.6. Dollar Tree trades at 13.9. On nearly every key metric, recent revenue growth, multi-year growth, and operating margin, Dollar Tree screens as the stronger performer, yet it costs less than half as much on a valuation basis.

The premium for Costco has always been justified by its powerful membership model, a moat that locks in a recurring, high-quality revenue stream. But that premium looks much richer when the growth of that very membership base is slowing, and margins are under pressure. We have explored what keeps Costco’s stock price high in a separate analysis. For those who prefer to own the entire sector rather than pick a winner, a consumer staples ETF that owns both stocks is another alternative.

The Tradeoff: A Premium Moat or A Turnaround’s Momentum?

The choice between these two stocks today turns on one key dimension: are you paying for past glory or future momentum? Choosing Costco here means paying a significant premium for its world-class moat. Still, it also means underwriting the risk that its slowing membership growth and margin pressure are the start of a new, less dynamic chapter.

Dollar Tree offers exposure to the same value-seeking consumer, but with a clearer set of forward catalysts. Its multi-price strategy is driving higher spending, its operational turnaround is boosting profits, and its management has signaled its confidence by raising its forecast. The risk is that this turnaround is still in its early innings and could stumble. But for now, the forward signals and the valuation you pay for them lean decisively in its favor.

Want To Stack Them Up Side By Side Yourself?

You can line Costco Wholesale and Dollar Tree up directly on the Costco Wholesale peer comparison, weigh them on valuation, growth, margins, and returns, and swap in any other Consumer Staples Merchandise Retail names you hold. Or, if you would rather not pick a side at all, a consumer staples ETF like XLP holds both Costco Wholesale and Dollar Tree alongside the rest of the group.

Two Names, One Real Risk

Comparing two stocks is useful – but owning too much of either is the exposure that actually matters. When a single position dominates your net worth, being right about the debate does not save you from one bad year, and selling to rebalance hands a chunk to the IRS. There is a way to protect the position and diversify out tax-efficiently.