Costco Wholesale Corp (COST) shares reached a record $1,096.50 on Wednesday, May 20, 2026. The company's market capitalization climbed to approximately $485 billion. This milestone represents a year-to-date gain of over 25%.
Robust earnings and increased April net sales fueled the recent surge. Digital sales grew by 22.6% during the month.
The stock currently trades at a price-to-earnings ratio exceeding 55x. Costco scheduled its next earnings report for May 28. Analysts indicate the company must deliver a near-perfect report to justify its premium valuation and sustain current momentum.