How is Costco’s executive membership driving 11.6% sales growth — and what should mid-market operators learn?
Costco’s Q3 FY2026 earnings beat — 11.6% sales growth, $69.15B in net sales, 41.2M executive members — shows that membership economics, not transactional demand, is what holds up in a tight consumer year. Mid-market operators have the same customer concentration Costco built around. The strategic move for the next 90 days is to design a paid upgrade and renewal mechanic before discretionary spend tightens.