Japan's benchmark stock indices screamed higher Tuesday, recording their largest percentage gain on record. The Nikkei 225 gained 1171.2 points, to 14.15%, to stand at 9447.57. The broader-based TOPIX was ahead by 115.44 points to stand at 953.30. The gain was the highest recorded, beating the 13.4% one-day advance seen in the wake of the October 1987 crash.