NEW YORK, Oct 5 (Reuters) - U.S. stocks extended gains on Tuesday, with the S&P 500 holding above a key technical level after encouraging U.S. services sector data and moves by central banks to stimulate the global economy.
* The S&P 500 was at its highest level since mid-May on an intraday basis and above a recent resistance level of 1,150.
* The Dow Jones industrial average gained 159.84 points, or 1.49 percent, to 10,911.11. The Standard & Poor's 500 Index rose 20.57 points, or 1.81 percent, to 1,157.60. The Nasdaq Composite Index jumped 48.49 points, or 2.07 percent, to 2,393.01.