Costco Wholesale Corporation reported net sales of $29.86 billion for December, covering the five weeks ended January 4, 2026, representing an 8.5% increase from the prior year. For the first 18 weeks of the fiscal year, net sales rose 8.3% year over year to $101.83 billion.

Comparable sales increased 7.0% companywide for the five-week period, with digitally enabled sales up 18.9%. Excluding gasoline price and foreign exchange impacts, total comparable sales grew 6.2%, highlighting continued strong demand across U.S., Canadian, and international markets.

Source: Costco Wholesale Corporation / GlobeNewswire