Milan, January 18 - Monte dei Paschi di Siena (MPS) CEO Fabrizio Viola on Monday downplayed a 14.8% bourse fall, saying the Tuscan lender was "stable" and focused on getting better results on non-performing loans (NPL). "We confirm the economic and financial stability of the Bank, highlighted by the results of the SREP and the improvement in operating management as shown by the results achieved in the first nine months of 2015," he said. "The share price's drop occurred without any management issues apt to justify such progress," Viola said. "With reference to the management and sale of NPLs," he said, "we are concentrating (on this) in particular in order to obtain results that are even better than the Plan".