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Samsung SDI swung to operating profitability in the third quarter of 2026, driven by strong demand for energy storage system (ESS) batteries and growing sales of small batteries for AI data centers, posting its highest operating profit in 12 quarters. Yonhap reports net profit jumped to 342.2 billion won, while operating profit reached 4,078 billion won, with the company saying it has secured orders through 2028. The stock rose nearly 4% in early trading on the results, and the company has been winning consecutive ESS supply deals in North America, including a Texas deal.