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Costco (COST) is trading modestly lower following a mixed Q3 earnings report in which the warehouse retail giant narrowly missed EPS expectations despite delivering better-than-expected revenue growth, robust comparable sales trends, accelerating digital engagement, and continued strength in membership economics. While COST continues to benefit from its value positioning amid elevated fuel prices and macro uncertainty, investors appear focused on moderating membership growth, gross margin pressure, and signs that the company is leaning more aggressively into price investments to defend market share and reinforce member loyalty.

• Adjusted comparable sales rose 6.6%, while reported comparable sales increased 9.8%.
• Digitally-enabled comparable sales climbed 20.8% adjusted for FX, driven by a 37% increase in website and app traffic as COST expanded personalization tools, same-day delivery, and AI-enhanced search capabilities. Management noted that AI-generated traffic produced the company’s highest conversion rates during the quarter.
• Membership fee income rose 10.7% yr/yr to $1.37 bln, helped by the September 2024 membership fee increase. Paid memberships increased 4.1% to 82.9 mln, while Executive memberships grew 9.6% to 41.2 mln, reflecting continued success in driving higher-tier member upgrades.
• Renewal rates remained exceptionally strong, with U.S. and Canada renewal rates improving 10 bps sequentially to 92.2% and worldwide renewal rates holding steady at 89.7%. COST highlighted improving retention trends among digitally acquired members following targeted marketing initiatives.
• Gross margin contracted 21 bps yr/yr to 11.04%, pressured by higher gasoline sales, transportation costs, and deliberate price investments in staples such as eggs and beef. Excluding gas inflation, gross margin improved modestly by one basis point, underscoring COST’s ongoing focus on pricing leadership and member value.
• COST’s gas business delivered record-breaking fuel volumes during the quarter as elevated gasoline prices tied to Middle East geopolitical tensions drove increased consumer traffic and new member engagement at Costco gas stations. Management believes these trends should support stronger long-term loyalty and warehouse spending.
• Management also noted that COST has begun filing tariff refund claims tied to overturned IEEPA tariffs and intends to return recovered capital to members over time. Meanwhile, the company reiterated its long-term expansion strategy, targeting 30-plus annual net warehouse openings while continuing to invest heavily in digital infrastructure, logistics, and Kirkland Signature innovation.

Briefing.com Analyst Insight

COST’s Q3 results reinforced the durability of its membership-driven value model despite ongoing macro uncertainty, elevated gas prices, and tariff-related cost pressures. While the modest EPS miss and margin compression may temper near-term enthusiasm, the underlying fundamentals remained strong, highlighted by 6-7% core comparable sales growth, accelerating e-commerce momentum, and exceptionally resilient renewal rates. COST appears increasingly willing to prioritize pricing investments and member value over short-term margin expansion, particularly in gasoline and essential grocery categories, a strategy that should continue strengthening customer loyalty and market share. Digital engagement trends were especially encouraging, with AI-driven search traffic, personalization initiatives, and same-day delivery becoming increasingly meaningful drivers of conversion and spending. Investors may remain somewhat cautious around moderating membership growth and ongoing mix-related gross margin pressure, but COST continues to execute from a position of considerable competitive strength.