European investor confidence rose for a second month in October after the European Central Bank announced its plan to buy bonds of countries affected by the sovereign debt crisis, the Sentix research institute said. An index measuring sentiment in the euro-area economy increased to minus 22.2 from minus 23.2 in September, the Limburg, Germany-based institute said in an e-mailed statement today. Economists had forecast a gain to minus 20.9, according to the median of 10 estimates in a Bloomberg survey.