Costco’s annual membership model continues to underpin robust sales volume, with renewal rates consistently above 90%. In the most recent quarter, the company reported a 6% year-over-year increase in paid memberships, pushing total membership count past 130 million. This loyal base drove comparable‐store sales growth of 4.5%, outpacing the industry average and demonstrating resilience despite higher fuel and grocery prices in key markets.

Investors who placed $100 into Costco ten years ago have seen that stake grow to approximately $1,700, a compound annual growth rate near 31%, significantly outperforming the S&P 500’s roughly 12% CAGR over the same period. Total shareholder return has benefited from consistent dividend hikes—Costco has increased its dividend in each of the past eight years—and share repurchases totaling over $17 billion since 2015.

Despite strong fundamentals, Costco’s current valuation sits near the top decile of its ten-year historical EV/EBITDA range, raising questions about future upside potential. In the latest trading session, shares dipped by 1.33%, reflecting profit-taking after a 28% advance over the last twelve months. Analysts note that high membership growth may be nearing saturation in core markets, suggesting investors weigh the premium valuation against modest mid‐single‐digit sales and earnings growth forecasts for the coming year.