The Espirito Santo Bank (BES) headquarters is pictured in Lisbon on July 10, 2014.  Fears over the health of Portugal's largest listed bank, Banco Espirito Santo, sent its shares into freefall thursday, shaking stock markets in Lisbon and across southern Europe. AFP PHOTO/ PATRICIA DE MELO MOREIRA        (Photo credit should read PATRICIA DE MELO MOREIRA/AFP via Getty Images)