Costco’s fiscal fourth-quarter results, released after the close on September 24, delivered an EPS beat to $6.75 versus consensus estimates near $6.54, supported by 11.2% net-sales growth to $93.9 billion and 9.4% comparable-sales gains that exceeded forecasts. Strong membership-fee income, digitally enabled comparable sales up nearly 20%, and a non-recurring $0.15-per-share benefit from IEEPA tariff refunds—partially reinvested in member value—provided the primary lift, consistent with Costco’s pattern of beating estimates in recent quarters amid resilient warehouse-club traffic. With the outcome now confirmed, the 100% market-implied probability reflects verified financial data rather than forward-looking sentiment. Residual uncertainty centers on any post-release adjustments to membership renewal rates or margin commentary during the earnings call that could influence subsequent quarters.