Societe Generale, France's second-largest bank, denied "all market rumours" and asked the nation's market watchdog for an investigation after speculation that France's creditworthiness was in doubt sent its shares tumbling.
The lender's performance in July and early this month shows it will be able to post "solid" results in the future, Paris- based Societe Generale said yesterday.
The bank asked France's Autorite des Marches Financiers to open a probe into the origin of speculation that is "extremely harmful to the interests of its shareholders".
Britain's Daily Mail newspaper has published an apology for an incorrect Monday report that said Societe Generale was in a "perilous" state.
Societe Generale led European bank stocks to their lowest since the aftermath of the credit crisis yesterday, tumbling 15 per cent to €22.18 ($38) in Paris, the biggest drop since October 27, 2008.