COST vs SBUX: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of October 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

Reading it: SBUX is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. COST and SBUX share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined COST and SBUX exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

Costco Wholesale operates a membership-based warehouse club chain. Members pay an annual fee (currently $65 for basic Gold Star, $130 for Executive) for access to Costco warehouses, where they can buy products at lower markups than traditional retailers. Costco operates approximately 900 warehouses globally, with the largest concentration in the United States plus meaningful presence in Canada, Mexico, the UK, Japan, South Korea, Taiwan, Australia, and other markets.

Full COST guide

Starbucks Corporation (Nasdaq: SBUX) is the world's largest specialty coffee retailer, roaster, and marketer. The company operates through three segments: North America, International, and Channel Development. Its roughly 41,000 stores worldwide sell coffee and tea beverages, whole-bean and ground coffees, ready-to-drink products, and food items including pastries and sandwiches. Revenue flows primarily from company-operated stores, with additional streams from licensed store royalties, packaged consumer goods sold through grocery and foodservice channels, and its Global Coffee Alliance partnership. The loyalty ecosystem, Starbucks Rewards, anchors the digital channel and generates recurring, data-rich customer engagement.

Full SBUX guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• COST drivers: Membership fee growth; International expansion.
• SBUX drivers: Turnaround Gaining Momentum; Loyalty and Digital Flywheel.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: Costco's premium valuation (about 48x trailing and 40x forward earnings in October 2026) embeds high expectations for continued same-store sales growth and margin expansion. For SBUX, the valuation is the most prominent near-term risk: at about 56x trailing and 31x forward earnings (as of October 16, 2026), the stock prices in a successful turnaround, leaving very little cushion if comparable-sales growth stalls or margins recover more slowly than expected.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick COST if you believe its drivers more; SBUX if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the COST and SBUX guides.

COST. Costco trades at one of the highest P/E ratios in retail, about 48x trailing earnings in mid-October 2026, on the strength of the durable membership model, consistent same-store sales growth (comparable sales up 11.4% in September), and the long runway for international expansion. The multiple has eased from earlier peaks as earnings grew faster than the share price. Analysts rate it a buy with an average target near $1,066, and the valuation has compressed historically only during severe market drawdowns.

SBUX. At $97.05 on October 16, 2026, Starbucks trades at about 56x trailing and 31x forward earnings, down from roughly 72x trailing in March as earnings recovered faster than the share price. Fiscal Q3 2026 showed comparable sales and margins both improving, and management raised fiscal 2026 adjusted EPS guidance to $2.55 to $2.65, though consensus estimates have drifted down in the past month. The fiscal Q4 report on October 29, 2026 (consensus about $0.70 per share) will show whether the 7.9% comp pace and the margin rebuild held without the tariff-refund help.

Headline figures (approximate, October 2026): COST shows revenue (fy2026) ~$303 billion, up ~10% YoY; Q4 up ~11% YoY, operating margin ~3.8% (low, by design; membership fees are the profit lever), net income (fy2026) ~$9.2 billion, eps (fy2026) ~$20.76; Q4 $6.75 vs ~$6.53 consensus; SBUX shows revenue (ttm through june 2026) ~$38.3 billion, fiscal q3 2026 revenue ~$9.3 billion (-1% y/y, China JV change), global comparable sales (fq3 2026) +7.9%, operating margin 14.4% in FQ3 2026; ~12.9% TTM.

COST and SBUX are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined COST and SBUX exposure against your real portfolio. It is not an investment adviser.