Taiwan's Nan Ya Plastics is rallying after big foreign banks lifted their targets on its PTFE copper-clad laminate business, a win for shareholders riding the AI hardware boom.

• Nan Ya shares opened higher and rose more than 5% in early Taipei trading on heavy volume.
• JPMorgan and Macquarie both rate the stock above the market, with Macquarie's target far above the current price.
• The excitement comes from talk that Nvidia's next-generation Rubin Ultra switch boards will use PTFE-based materials, putting suppliers in the spotlight.
• Foreign investors were actually net sellers late last week, yet the stock kept climbing anyway.

Outlook: Momentum looks strong but the run-up has been fast, so buying on a pullback is the safer play.