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A sign sits illuminated on the roof of the UBS Group AG headquarters in Zurich, Switzerland, on Wednesday, Feb. 17, 2016. The European Central Bank would reduce euro-area bank earnings by as much as 10 percent by pushing deposit rates further into negative territory while having little effect on the euro, according to Morgan Stanley. Photographer: Michele Limina/Bloomberg via Getty Images

A sign sits illuminated on the roof of the UBS Group AG headquarters in Zurich, Switzerland, on Wednesday, Feb. 17, 2016. The European Central Bank would reduce euro-area bank earnings by as much as 10 percent by pushing deposit rates further into negative territory while having little effect on the euro, according to Morgan Stanley. Photographer: Michele Limina/Bloomberg via Getty Images