Merck & Co traded at $84.71 this Friday September 5th, increasing $0.66 or 0.79 percent since the previous trading session. Looking back, over the last four weeks, Merck gained 6.63 percent. Over the last 12 months, its price fell by 28.14 percent. Looking ahead, we forecast Merck & Co to be priced at 84.01 by the end of this quarter and at 81.93 in one year, according to Trading Economics global macro models projections and analysts expectations.