Costco stock sinks after US same-store sales miss forecasts as consumers weigh value push, tariff pressures

Costco's stock declined over 2% following its Q4 earnings, despite beating overall revenue and EPS estimates, primarily due to U.S. same-store sales growing 6%, slightly below the 6.1% forecast. This marginal miss, amidst strong growth in membership fees (up 14%) and total same-store sales, highlights consumer selectivity in discretionary spending and intensified competition, including Amazon's same-day delivery expansion, contributing to Costco's year-to-date underperformance relative to the S&P 500.

Analysis

Costco's fourth-quarter results present a mixed signal, where headline beats on revenue and earnings were overshadowed by a specific operational metric, triggering a more than 2% stock decline. The company exceeded consensus estimates with revenue of $86.16 billion and adjusted EPS of $5.87. However, the market reacted negatively to U.S. same-store sales growth of 6.0%, which fell just short of the 6.1% forecast. This slight miss in its primary market eclipsed stronger-than-expected performance in Canada (8.3% growth vs. 6.8% expected) and an overall same-store sales beat of 6.4% versus the 6.2% anticipated. Management commentary reinforces this dynamic, noting that while consumers flock to "everyday value items," they remain "very choiceful in their spending on discretionary items." Underscoring the company's fundamental strength, membership fee income grew a substantial 14% to $1.72 billion, with cardholder numbers increasing 6.1%, indicating a loyal and expanding customer base. Nevertheless, investor caution appears amplified by the competitive landscape, particularly Amazon's same-day delivery rollout, which is cited as a headwind for Costco and other retailers and is reflected in the stock's flat year-to-date performance against the S&P 500's 13% gain.

Key Decisions for Investors

• Investors should closely monitor upcoming U.S. same-store sales data, as the market has shown extreme sensitivity to performance in this core segment, viewing it as a key indicator of consumer health and competitive standing.
• The stock's significant year-to-date underperformance relative to the S&P 500 suggests that concerns over competition from Amazon are being priced in; any strategic response from Costco to this threat should be carefully evaluated.
• Given the robust 14% growth in high-margin membership fee income, long-term investors may view the current price weakness as an opportunity, provided they are comfortable with the near-term pressures from consumer selectivity on discretionary goods.