Costco Wholesale Corporation (COST) closed at $934.66 on August 28, 2026, declining 2.24% over the prior 24-hour period. The retreat weighed on the warehouse retailer's near-term momentum, though the stock still carries a slim 0.13% gain over the past seven days.
The one-month picture remains under pressure. COST has shed 3.30% over the past 30 days, reflecting a broader pullback from recent levels. The company's market capitalization stood at $424.02 billion as of the close.
The daily loss placed Costco among the notable decliners in the large-cap retail space during the session. Despite the single-day drop, the stock's weekly performance suggests the selling pressure has not been uniform across the recent trading period.
Costco continues to rank among the largest retailers by market value, with its $424.02 billion capitalization reflecting its scale within the sector. Investors will be watching whether the 30-day downtrend stabilizes in the sessions ahead.
