Core Viewpoint - The European Central Bank has approved Francesco Gaetano Caltagirone to increase his ownership in Monte dei Paschi di Siena to a maximum of 20% [1] Group 1: Company Developments - Francesco Gaetano Caltagirone is an Italian entrepreneur who is set to raise his stake in the Tuscan lender Monte dei Paschi di Siena [1] - The approval from the European Central Bank indicates a significant move in the ownership structure of Monte dei Paschi di Siena [1]