On August 28, 2026, SHD (001770) surged 30.00% intraday, approaching the daily upper limit, and traded near 12,350 won on KOSDAQ. The entire move occurred within a single trading session. The KOSDAQ index rose +0.19% in the same period, while the KOSPI fell -0.95% . The broader market showed modest, mixed movement. SHD's 30% jump was driven by stock-specific factors, not market-wide momentum. Why this stock popped today SHD manufactures tinplate—the tin-coated steel used for can lids and food cans—at its Ansan facility. Founded in 1956, the company has operated for 70 years. The catalyst took shape recently when the company announced a 2 billion won share-repurchase plan, which led to three consecutive days at the daily upper limit. Share buybacks are typically read as price-support measures. With tight float, the concentrated buying interest amplified the move, analysts noted. A regulatory backdrop also plays a role. Stricter delisting rules implemented in J...