Both the Storyboard18 earnings report and the Hedgeye X post independently confirm the exact figure (8.7% / -8.7%) and the exact timeframe (largest single-day/one-day decline since July 2022). The Storyboard18 article provides substantive context linking the drop to Walmart's Q2 FY27 results and the Flipkart Big Billion Days timing shift, consistent with the claim.