Indian stock market benchmark Sensex today scaled new highs, hitting 50,000 for the first time. Sensex was up 0.5% to 50,050. From its March lows of 25638, Sensex has nearly doubled in value in about 10 months. Nifty also rose to a new high and was also firm over 14,700. The rally in stock markets has been triggered by the massive liquidity injection by the central banks.