'Rogue trader' had assisstant

Investigators at Societe Generale SA say they suspect former futures trader Jerome Kerviel was helped by an assistant to cover up massive trading positions that led to a multibillion euro loss.

In two long-awaited reports, the investigators said the French bank’s management failures and culture of risk-taking were partly to blame for failing to spot the positions, which led to a loss of almost €5bn once they were unwound.