SK Hynix is trading 4.1% up at €866.00 after Reuters reported on October 21 plans to upgrade its Dalian factory for advanced NAND production. - The upgrade targets chips with 240 layers or more, aiming to compete with Chinese rivals and meet AI demand; Reuters said shares ended higher after the report. - The move also comes amid a broader chip-sector rebound: strong Super Micro results eased concerns about AI server demand and lifted chip stocks. - No separate SK Hynix earnings catalyst was identified.