Tokyo stocks ended lower due to concerns over rising long-term rates in Japan. The Nikkei and Hang Seng indices both fell by nearly 2%. Japan's Nikkei Average futures dropped by 1.14%. On Thursday morning, the Nikkei Stock Average plunged more than 800 points, later reported as over 700 points, driven by weak performance on Wall Street and interest rate concerns. The Nikkei stock index sank over 2% at opening.