Winbond Electronics is trading 5.38% down at TWD 167.00 after a semiconductor sell-off amid sharply higher global bond yields, valuation concerns and worsening geopolitical risk.
- Philadelphia Semiconductor Index fell 4.98%; Micron and SK hynix also suffered heavy losses, supporting a sector-wide rather than company-specific catalyst.
- No new material Winbond announcement was found for August 19, 2026; disclosures: strong second-quarter results and July revenue growth. Shares: TWD 183.50 (August 14) to TWD 176.50 (August 18); volume unavailable.