Did Semiconductor Equipment Stocks Lose 500 Billion Won in a Day? Are They Catching Their Breath?

Semiconductor equipment stock ACM Research, Inc. (Nasdaq: ACMR) closed at $104.11 in U.S. trading, down 5.24%. Volume totaled 1,609,796 shares, and the company’s market capitalization declined by about $330 million in a single day, bringing it to roughly $6.6 billion.

In its Q1 2026 results announced on May 7, ACMR reported revenue of $231.26 million, a 34% increase year-over-year, and reaffirmed its full-year revenue growth guidance of 21–30%. The company also made its first deliveries of PECVD SiCN systems and panel-level packaging equipment to global customers. Meanwhile, it is pursuing a Hong Kong H-share listing for its key Shanghai subsidiary, ACM Research Shanghai, and plans to raise approximately $110 million in cash through equity sales—part of its aggressive expansion strategy. (Source: ir.acmr.com)

Founded in Silicon Valley in 1998, ACM Research supplies semiconductor process equipment—including wafer-level wet clean tools, plating, plasma CVD, and CMP systems. Headquartered in Fremont, California, it markets its products to Chinese and international clients via its Shanghai subsidiary. Led by founder and CEO Dr. David Wang, the company’s heavy exposure to Chinese foundry and packaging customers makes U.S.-China semiconductor regulations and China’s equipment investment cycle critical factors for its financial performance and valuation. (Source: acmr.com)