Costco Wholesale Corporation (COST) closed at $977.89 on October 16, 2026, slipping 0.42% over the prior 24 hours. The modest daily pullback came against a backdrop of broader market activity, leaving the warehouse retail giant's market capitalization at $435.15 billion.
Despite the single-session decline, the stock has posted a 3.17% gain over the past seven days, signaling sustained buying interest in the near term. The longer view is more pronounced, with shares up 8.52% over the trailing 30-day period.
The combination of a slight daily dip and meaningful weekly and monthly advances reflects a stock consolidating recent gains rather than reversing course. Costco's market capitalization of $435.15 billion continues to place it among the largest retailers by valuation.
