Costco logo in front of Costco homepage on desktop computer. Key Points COST shares have now erased all of their 2025 gains following a 10% dip in the last three months. Despite consistent earnings beats and strong comp sales, the stock is nearing crucial technical levels that could trigger the next wave of momentum. Is COST finally ready to rebound? There are reasons for hope and fear, but the charts are hinting that further downside lies ahead. Interested in Costco Wholesale Corporation? Here are fi ...