Thanksgiving marks the beginning of the holiday season. For many investors this typically means it is time to start unwinding positions and bank profits before year-end. However this holiday season is very different from others because big announcements are expected in the next 3 weeks that will usher in a new era for monetary policy. The Federal Reserve is poised to raise interest rates for the first time in 9 years and the European Central Bank is expected to increase stimulus. Although both o…