Semiconductor Equipment Stocks Hit All-Time High, Market Cap Increased by 470 Billion Won in One Day

ACM Research Inc. (NASDAQ: ACMR) saw its share price surge 5.71% on the Nasdaq, closing at $93.70 (approximately ₩126,000) and setting a new intraday all-time high. Its market capitalization rose to about $5.74 billion (roughly ₩7.8 trillion), up by approximately $347 million (₩470 billion) in a single day, with trading volume reaching 1.71 million shares.

On May 7, the company reported first-quarter revenue of $231 million (about ₩310 billion), a 34% increase year-over-year. In mid-May, it also announced a registered direct offering of common shares worth around $150 million (₩200 billion) to institutional investors, which stirred short-term concerns over potential share dilution.

Headquartered in Fremont, California, ACM Research supplies semiconductor wafer cleaning and process equipment—particularly advanced packaging and foundry tools—to global customers, including those in China. With a large share of its production and sales generated by its Chinese subsidiary, ACM Research Shanghai, the company is seen as significantly exposed to U.S.-China tensions and Chinese semiconductor regulations.