For stock performance under Trump, don't look to prior transitions

As he is sworn in as the 45th U.S. president on Friday, Donald Trump will mark one of the best performances for the American stock market for any presidential transition period of the modern era. For guidance, investors need only recall the oscillations under the outgoing administration. Democratic President Barack Obama's transition period, which came amid the throes of the 2008 financial crisis, also overlapped a 15.5 percent fall for the S&P 500 from his election to the day of his inaugur