Taiwanese chip-testing company Ardentec jumped sharply, briefly hitting its daily limit, as investors piled back into advanced packaging and testing stocks — good news for shareholders and a sign of strong demand for AI-related chip services.

• Foreign investors, local funds, and dealers all bought heavily, pushing the stock back above its short-term trend line.
• Ardentec expects factory usage to keep climbing in the second half, with sales and profits rising each quarter and third-quarter revenue up double digits from the second.
• Its new Hukou plant, run by a subsidiary, starts mass production this quarter, focused on testing silicon photonics chips used to speed up data flow in AI systems.
• The company expects that plant to be running at full capacity by 2027.

Outlook: Rising factory usage and the silicon photonics ramp should keep results improving through year-end, with more upside if AI chip demand holds.