Samsung SDI is trading at KRW 507,000, up +4.11%, on August 20, 2026, in a volatile sector rebound after its August 18 pullback.
- It fell 5.43% to KRW 488,000 on August 18 amid broad Korean battery weakness and profit-taking.
- No fresh company-specific announcement clearly explains the move; recent GM battery developments and solid-state plans predate the session.
- Trading remains sharply volatile, following several moves exceeding 4% over the past week.