Goldman Sachs on Wednesday raised its 12-month target for the benchmark Kospi to 12,000, implying more than 35% upside from current levels. The Kospi has surged roughly 100% year-to-date, making it one of the world's best-performing major indexes. Bank employees work in front of multiple monitors at the Hana Bank dealing room in Seoul, South Korea, on May 12, 2026. Nurphoto | Nurphoto | Getty Images South Korea's stock market has already doubled this year, but some strategists say the rally may still have room to run as the country's artificial intelligence-linked chip giants continue to power earnings growth. Goldman…