Tokyo stocks opened lower Thursday, tracking falls on Wall Street as investors were disappointed at the US Federal Reserve's cues on additional rate hikes next year, while SoftBank's mobile phone unit fell sharply for the second day.

The benchmark Nikkei 225 index was down 0.90%, or 188.22 points, at 20 799.70 in early trade while the broader Topix index was down 0.68%, or 10.52 points, at 1 545.63.

Wall Street shares slumped after the Fed lifted interest rates as expected, even as the central bank signalled it expects slower rate increases next year.