Walmart Inc. is a global US retail group that dominates a large part of the US market. Walmart is number one in the Fortune Global 500 list of the top-selling companies in the world.
A Failure to deliver also known as fails-to-deliver or FTD occurs when a buyer or seller is unable to meet his trading obligations. FTDs for US listed companies are reported to the SEC and published twice a month. Therefore there is a certain delay between the reporting and the publishing of the data.
Number of shares, 3 months chart