Shares in Vodafone Qatar drop 2.0 percent to 12.67 riyals, market's most heavily traded stock.
Company reported quarterly net loss of 113.6 million riyals ($31.2 million) versus loss of 53.5 million riyals in prior-year period; analysts had forecast loss of 90.0-102.2 million riyals.
Stock has technical support at August low of 12.00 riyals.
Qatar stock index down 0.5 percent.