Costco Wholesale Corporation (COST) closed at $915.54 on September 5, 2026, a decline of 1.06% over the prior 24-hour period. The move extended a broader pullback that has weighed on the retailer's shares in recent weeks.
Over the past seven days, Costco shares have fallen 3.21%, while the 30-day decline stands at 2.81%. The consecutive losses across those timeframes suggest sustained selling pressure on the stock over the near term.
Despite the slide, Costco retains a market capitalization of $410.4 billion, reflecting its continued standing as one of the largest retailers by market value. The stock's current price of $915.54 marks the latest data point in what has been a negative trend across the measured periods.
No single catalyst was identified in the available data to explain the recent weakness. The figures show a consistent pattern of modest but persistent losses across the one-day, seven-day, and thirty-day windows tracked for this session.
