As we get ready to say goodbye to the 2010s, CNBC.com is taking a look back at the key players, events and transformations from Wall Street to Silicon Valley to corporate America to the White House that shaped a "Decade of Disruption." In the lead-up to New Year's Day 2020, CNBC's online journalists will be exploring the moments that defined the past 10 years for your money and set the table for the next decade and beyond.

The banking industry underwent evolutionary change in the 2010s following the financial crisis and the Great Recession. Sanford Weill, the father of the financial supermarket, shocked Wall Street in 2012 when he called for the breakup of the sprawling institutions that were made possible by his vision. Weill, as CEO of Citigroup in the late 1990s, used the bank as the vehicle to shatter the rules of banking.