According to exchange documents, on July 19th local time, two ETFs under the Ark Investment Management company, led by Cathy Wood, founder of Ark Fund nicknamed "Wooden Sister," purchased 38595 shares of cybersecurity company CrowdStrike stock worth approximately $13.24 million. Earlier that day, CrowdStrike experienced a large-scale technical malfunction; Increased holdings of 38519 shares of software development platform GitLab, valued at slightly over $2 million; At the same time, 16758 shares of Coinbase stock and 88545 shares of Roblox stock were sold, and 17607 shares of Tesla stock were also reduced. As of the close on July 19th, CrowdStrike has fallen more than 11%, marking the largest single day decline since 2022, and has accumulated a decline of about 18% this week.