Sumitomo Chemical shares soar 11%, record biggest single-day surge in nearly 2 years. Here’s why

Sumitomo Chemical India shares surged around 11% as heavy volumes and a major development at its Japanese parent’s Korean subsidiary lifted sentiment. Dongwoo Fine-Chem’s joint venture with Samsung Electro-Mechanics for glass core substrates boosted optimism around next-generation semiconductor packaging demand. The stock hit a fresh high amid strong trading activity.