Out of the Dow's 30 time-tested components, there are three brand-name outperformers that billionaire asset managers dumped in the June-ended quarter.For more than 128 years, the iconic Dow Jones Industrial Average (^DJI 0.14%) has served as one of Wall Street's top "health" barometers. Over this span, we've watched the Dow evolve from an index dominated by industrial stocks to one that currently features 30 diverse multinational businesses.Although the Dow Jones is packed with mature businesses that have h ...