Costco's Momentum Continues, But Is the Stock a Buy?

Costco reported robust fiscal Q4 results, with revenue climbing 8% to $86.16 billion and adjusted EPS increasing 11% to $5.87, both surpassing analyst expectations. The company demonstrated strong operational momentum, including 6.3% adjusted worldwide same-store sales growth and a 14% rise in membership-fee revenue to $1.72 billion, supported by high renewal rates. Despite this strong performance, Costco's stock has remained largely flat year-to-date, with its elevated forward P/E ratio of 47x cited as a key factor likely to keep the shares rangebound until earnings growth catches up to its premium valuation.

Analysis

Costco reported strong fiscal Q4 results, with revenue growing 8% to $86.16 billion and adjusted EPS increasing 11% to $5.87, slightly exceeding analyst consensus. This operational strength is underpinned by a 6.3% adjusted increase in worldwide same-store sales, significantly outpacing peers like Target, which saw a 1.9% decline. Key growth drivers included a 3.7% rise in global traffic and a 13.5% surge in adjusted e-commerce revenue. The company's membership model remains a core asset, with fee revenue climbing 14% to $1.72 billion, aided by a prior fee hike and a 6.3% increase in paid households to 81 million. Despite these robust fundamentals and a 165% stock gain over five years, the shares have been flat year-to-date. This performance disconnect is primarily attributed to a steep valuation, with the stock trading at a forward price-to-earnings ratio of 47x, suggesting that the market has already priced in the strong performance and may keep the stock rangebound until earnings growth can further justify this premium.

Key Decisions for Investors

• Given the stock's flat year-to-date performance despite strong operational results, investors holding long-term gains should consider the elevated 47x forward P/E ratio as a signal that the stock may remain rangebound in the near term.
• Prospective investors should exercise caution before initiating new positions, as the high valuation presents a significant risk of limited near-term upside; waiting for a more favorable entry point or for earnings to catch up to the multiple may be a more prudent strategy.
• Monitor same-store sales, customer traffic, and membership renewal rates—particularly among younger, digitally-acquired members—as sustained momentum in these core fundamentals is critical to justifying the stock's premium valuation, especially as the benefit from last year's fee hike annualizes.