IQE is trading at £41.80, down 5.22%, with the decline more consistent with semiconductor-sector pressure than a company-specific announcement. - China competition and concerns about AI spending weighed on chips; hotter U.S. inflation added rate worries. - No clear new IQE-specific announcement explaining the move was identified. - The closest company-related coverage concerned first-half results, AI demand and a planned listing move; those reports date to September, not October 15.