A sign is seen beside the entrance of the Bank for International Settlements (BIS) in Basel December 5, 2013. REUTERS/Arnd Wiegmann

Commuters pass by the front of the Bangladesh central bank building in Dhaka March 8, 2016. REUTERS/Ashikur Rahman/File Photo

A Wells Fargo branch is seen in the Chicago suburb of Evanston, Illinois, U.S. on February 10, 2015. REUTERS/Jim Young/File Photo

A sign is seen beside the entrance of the Bank for International Settlements (BIS) in Basel December 5, 2013. REUTERS/Arnd Wiegmann

Former Tunisian President Moncef Marzouki speaks at a meeting to launch his new political party in Tunis, Tunisia December 20, 2015. REUTERS/Zoubeir Souissi

Macquarie Group's corporate logo is pictured on the wall of the Sydney headquarters after the Australian bank's full year results were announced, May 6, 2016. REUTERS/Jason Reed

CBS Corporation President and Chief Executive Officer Leslie Moonves poses for a portrait in his office in Studio City, California in this February 1, 2016 file photo. REUTERS/Mario Anzuoni/Files

The facade of the U.S. Federal Reserve building is reflected on wet marble during the early morning hours in Washington, July 31, 2013. REUTERS/Jonathan Ernst