Over the past six months (April 2026 - October 2026), several events have impacted ACM Research, Inc.'s stock price: On April 2, 2026, ACM Research introduced its "ACM Planetary Family™ Product Portfolio Structure." On April 27, 2026, the company announced preliminary unaudited revenue and shipments for Q1 2026 and shipped its first PECVD SiCN system. On May 7, 2026, ACM Research reported its First Quarter 2026 results, with revenue growth of 34.2% and reiterated its full-year 2026 revenue outlook of $1.08 billion to $1.175 billion. On August 7, 2026, the company reported strong Second Quarter 2026 results, with revenue and shipments both increasing 36% year-over-year to $292.9 million, driven by higher sales of ECP and advanced packaging. ACM Research also raised its full-year 2026 revenue outlook to a range of $1.125 billion to $1.175 billion (25% to 30% year-over-year growth), announced its Ultra ECP ap-p Horizontal Panel Electroplating Tool received its first production order and an evaluation order, and expanded its Ultra C Tahoe into a wet processing platform. On September 23, 2026, ACMR shares surged +6.42% due to raised 2026 revenue guidance, a surging order book (new orders jumped over 105% in the first half of the year), and strong industry tailwinds from artificial intelligence demand. On September 30, 2026, ACM Research's operating subsidiary, ACM Research (Shanghai), reported a backlog of RMB 17.1 billion (approximately $2.5 billion), an 88% increase from a year ago, and the company announced its participation in the 18th Annual CEO Investor Summit 2026. On October 5, 2026, ACMR's stock price fell sharply by almost 9%, closing at $76.17, following a 7% gain on September 30, highlighting investor uncertainty in the cyclical semiconductor equipment sector. On October 7, 2026, Congress Asset Management Co. increased its position in ACM Research by 23.8% in the third quarter. Overall, the stock has shown significant growth over the past year, with a 1-year change of +80.3% as of October 6, 2026.
