The Nikkei stock index ended Monday above the 50,000-point mark for the first time, rallying over 2 percent to finish at a new all-time high, as investors welcomed progress in U.S.-China trade talks.The 225-issue Nikkei Stock Average surged 1,212.67 points, or 2.46 percent, from Friday to 50,512.32. The broader Topix index finished 55.60 points, or 1.70 percent, higher at 3,325.05, also a record high.The benchmark Nikkei index reached 50,000 in just over a month after topping 45,000 for the first time on Sept. 16.All industry sectors advanced on the top-tier Prime Market, led by nonferrous …READ FULL ARTICLE