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Rasa Industries surges over 23% to daily limit, in spotlight as key TSMC-related stock

Wed Jun 3, 2026 12:34 pm JST Catalyst

Rasa Industries,Ltd. <4022> shares accelerated gains for a fourth consecutive session, forming a large bullish candlestick and surging over 23% to hit its daily limit-up at the 2,600 yen level. The stock broke through its year-to-date high of 2,638 yen set on May 12, entering new high territory for the first time in about three weeks.

The company's flagship high-purity phosphoric acid is seeing robust demand as an etching material with ultra-low impurities used to remove foreign particles from wafer surfaces in chip manufacturing, a segment where it holds the leading global market share. Leveraging its strong business footprint in Asian markets, Rasa Industries has attracted major institutional investors, including overseas funds, as a top supplier to TSMC , the world's largest contract chipmaker. Short-covering activity apparently ignited as June trading began, squeezing multiple foreign brokerages that had built up short positions.

Source: MINKABU PRESS

*Translated by generative AI. Click here for the original article.