ChipMOS Technologies is trading 9.1% down at $41.50 in pre-market, extending a steep multi-day slide amid a broad semiconductor sector sell-off.
- The decline follows growing market concerns regarding AI infrastructure spending and profitability, which previously impacted the stock on July 29, 2026.
- The current weakness appears to be sector-driven rather than company-specific, as major market indices are trading slightly higher in futures.