Costco Wholesale Corporation (COST) gained 1.20% on August 29, 2026, with shares closing at $945.90. The move pushed the warehouse retail giant's market capitalization to $414.5 billion.
Despite the single-day advance, the stock's broader trend remains mixed. Over the trailing seven days, COST is down 0.18%, and the 30-day period shows a decline of 2.08%, indicating modest selling pressure has weighed on the name in recent weeks.
The day's gain offers some near-term relief after that stretch of underperformance, though the stock has not fully recovered the ground lost over the past month. Costco remains one of the largest companies by market value in the consumer staples and retail space.
