Taiwan's Nan Ya Plastics has jumped the daily limit two days running as prices rise for glass fiber cloth and copper-clad laminate, a strong signal for AI supply-chain investors.

• Nan Ya locked limit-up again on heavy volume, taking the stock from around 180 to 227.5 in a short run — up more than a quarter.
• The move is driven by price increases in glass fiber cloth and copper-clad laminate, the base materials for AI server circuit boards.
• Tight supply of high-end CCL and ABF substrate materials lets Nan Ya keep raising prices as AI data center spending grows.
• The rally pulled the rest of the Formosa Plastics group up with it, including Formosa Plastics, Formosa Chemicals, and Formosa Petrochemical.
• Foreign investors, local funds, and dealers all bought heavily, with big buying through Fubon, Yuanta, and Morgan Stanley.

Outlook: Third-quarter results are expected to beat the second quarter, helped by earnings from stakes in Nanya Technology and Nan Ya PCB, though anyone not already holding may want to wait for a pullback after such a fast run.