Austria’s Financial Market Authority (FMA) is reviewing whether to approve Mexican billionaire Carlos Slim’s America Movil becoming a major shareholder in Telekom Austria, reports Die Presse. America Movil has agreed to acquire a 26 percent stake in Telekom Austria. As Telekom Austria owns a banking subsidiary and the stake is greater than 10 percent, the FMA must review whether the Latin American operator group is suitable to become such a significant shareholder.