The Nifty 50-share index crossed the 10,000-mark for the first time in its 21-year history during intraday trade on Tuesday. The index completed the last 1,000 points in just 92 trading sessions but later retreated to close at 9,964.55. The BSE Sensex ended at 32,228.27. The surge follows encouraging quarterly earnings, with combined net incomes of 119 companies rising 11%.