E*TRADE Financial Corp

Wednesday’s Top Upgrades And Downgrades: Goldman Sachs, MannKind Corp, Tetraphase Pharmaceuticals, Pepco, Yingli, Walgreens Boots Alliance, E*TRADE, Plains GP Holdings

There has been a lot of action on Wall Street today as analysts have weighed in on their favorite stocks. Below are the …

Kate George, Editor — September 9, 2015, 11:06 AM EDT