Asian stocks surged as tech shares jumped across the region, with Japan's Nikkei hitting a new record high. The Nikkei share average crossed the 42,000 mark for the first time, boosted by a rally in U.S. stocks. U.S. stocks extended gains, with the S&P 500 and Dow Jones up 1.00 percent. Benchmark 10-year September JGB futures and Japan's Nikkei average futures also saw increases.