Crown Castle is an American operator of telecommunications networks based in Houston. The company operates over 40,000 transmission masts, 70,000 small cells for wireless communication as well as a fiber optic cable network.
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