These high-quality REITs are on sale. The S&P 500 has delivered strong returns over the past year, rallying more than 25%. Most stocks participated in that rally. However, a few stocks have lagged the market. Realty Income (O -0.25%) and Prologis (PLD -0.84%) stand out because they've declined more than 10% over the past year. On the positive side, investors can buy these magnificent dividend stocks at lower prices and much higher dividend yields. Built to grow its dividend Realty Income has been a fantasti ...