Airtel Africa is trading 5.54% down at £259.00, with investors reacting to October 30 half-year results and capex more than doubling. - Capital expenditure rose to $657 million from $318 million, despite revenue growth and record margins; coverage also cited exceptional charges, including a $55 million charge. - Revenue grew 28.2% in reported currency and 20.8% in constant currency. - The decline appears company-specific; available reporting links it to the results, not a separate November 2 announcement.