In a quarterly filing that reveals trades made by June 30, 2026, Mason Hawkins' Southeastern Asset Management reported a significant reduction in its holding of ACM Research. The firm sold over 643,000 shares, cutting its position by 82.18% from 782,900 shares down to 139,480. Based on the quarter's trading range, the estimated value of the shares sold is approximately $81.64 million.
This disclosure is from a delayed 13F report and does not represent a real-time trade. The sale occurred during a strong second quarter for ACM Research, which saw its stock price rally after analyst price target hikes. Subsequent to the reporting period, on August 7, the company reported a 36% year-over-year increase in revenue and raised its full-year guidance for 2026, citing strong execution and order growth.