CHICAGO, IL - DECEMBER 16 : Traders in the Standard &amp; Poor&#039;s 500 stock index options pit at the Chicago Board Options Exchange (CBOE) react after it was announced that they Federal Reserve would increase interest rates December 16, 2015 in Chicago, Illinois. The Federal Reserves raised the interest rates for the first time since 2006 by 0.25 percentage points. (Photo by Joshua Lott/Getty Images)