006400.KS (LG Chem) is trading approximately 13% up at â‚©512,000, with its subsidiary LG Energy Solution also seeing a significant rise. - This surge is primarily attributed to a strong rebound in the Korean secondary battery sector, fueled by increasing demand for Energy Storage Systems (ESS) to address AI power bottlenecks. - Investor optimism is also rising due to expectations that the battery industry has passed its bottom, alongside a market rotation of buying interest from AI chip stocks.