Costco Wholesale Corporation (COST) closed at $902.38 on September 11, 2026, posting no change from the prior session's close. The flat daily performance offered a brief pause in a broader pullback that has weighed on the stock in recent weeks.
Over the past seven days, shares have declined 2.48%, and the 30-day loss has deepened to 4.44%. The consecutive negative readings across both windows reflect sustained selling pressure on the warehouse retail giant.
Costco's market capitalization stood at $400.28 billion as of the close, keeping it among the largest retailers by that measure. Despite the recent softness, the company's valuation remains substantial in the broader consumer staples and retail landscape.
Traders and market watchers will be monitoring whether the stock can stabilize at current levels or whether the downward trend across the weekly and monthly timeframes continues into the sessions ahead.
