COST vs LULU: How Costco Wholesale and Lululemon Athletica Compare (2026)

Same yardstick, side by side (as of July 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: LULU 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 LULU 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 LULU 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

Lululemon Athletica designs and sells premium athletic and lifestyle apparel, footwear, and accessories, anchored by its yoga and leggings heritage and expanding into running, training, tennis, golf, and a growing men's business. The company makes most of its money through a vertically integrated, direct-to-consumer model: company-operated stores plus e-commerce, which carry higher margins than wholesale and give Lululemon control over pricing, brand, and customer data. That DTC mix is the reason gross margins have historically run in the mid-50s percent range, well above many apparel peers, though tariffs and markdowns have pressured them recently.

Full LULU 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.
• LULU drivers: International and China growth; Premium brand and pricing power.

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 embeds high expectations for continued same-store sales growth and margin expansion. For LULU, the bear case starts with the US, still Lululemon's largest market, where comparable sales have turned negative and management has pointed to negative brand commentary and weaker traffic.

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; LULU 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 LULU guides.

COST. Costco trades at one of the highest P/E ratios in retail, reflecting the durable membership model, consistent same-store sales growth, and the long runway for international expansion. The premium is also driven by Costco being widely viewed as a quality compounder in retail. The valuation has compressed historically only during severe market drawdowns.

LULU. Lululemon's multiple has de-rated sharply, with the stock trading near multi-year-low forward earnings multiples after a steep decline through 2026. The compression reflects a slowing North American business, margin pressure from tariffs and markdowns, and a cut to full-year revenue and EPS guidance reported alongside Q1 results. Figures are approximate, drawn from the Q1 fiscal 2026 release reported in June 2026, and move with the market and each new quarter.

Headline figures (approximate, early 2026): COST shows revenue (ttm) ~$260 billion, operating margin ~3.5% (low, by design; membership fees are the profit lever), net income (ttm) ~$7.5 billion, eps (ttm) ~$17.00; LULU shows revenue (q1 fy2026) ~$2.5B, up ~4% year over year (~2% constant currency), comparable sales ~-2% total; North America comps ~-6%, operating margin ~11.2%, down ~730 bps year over year, international / china growth International ~+17%; China Mainland revenue ~+30%.

COST and LULU 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 LULU exposure against your real portfolio. It is not an investment adviser.