Taiwan's IC substrate leader Unimicron got hit hard by an "origin-washing" scandal, and big local funds sold into the drop — bad news for holders, though bargain hunters stepped in.

• Unimicron was locked limit-down with no buyers the day before, then bounced more than 8% off the low on heavy volume before closing down slightly.
• Local investment trusts turned net sellers, dumping shares once the stock could actually trade again, even as some funds bought the dip.
• The stock had just hit a record high last week on the AI boom, which has turned ABF substrates into a seller's market, before the scandal knocked it back below the T$1,000 mark.
• Unimicron is Taiwan's 10th largest listed company and a core holding in major Taiwan ETFs, so the damage spreads well beyond direct shareholders.

Outlook: Where the shares go next depends on whether local funds and foreign investors keep cutting their stakes.