Actively managed mutual funds had a good year in 2015, yet still ended up down 4.2%. "To claim bragging rights over the robots, you had to be locked into an investing style that itself trailed the Standard & Poor’s 500 Index total return by about 6 percentage points and ended up losing money," Bloomberg's Dani Berger writes. "Add this to the list of reasons that 2015 saw an unprecedented amount of money flow to passive from active strategies." Read the original article from Bloomberg.