Systematic portfolio rebalancing forces the ultimate investor axiom to hold true: Buy low, sell high. Today's Stocks & Topics: Real Estate, DLTR - Dollar Tree Inc., Trustees, GDP, Hedge Funds, GDX - VanEck Vectors Gold Miners ETF, WWD - Woodward Inc., Small Cap Funds, OPHT - Ophthotech Corp., DHI - D.R. Horton Inc., Investing or Paying of the Mortgage.