The Bombay Stock Exchange today shot up by 71 points in early trade on continued buying by foreign funds, which took cues from firm global markets. The Sensex, which had gained over 300 points in the last four sessions, added 71 points, or 0.44 per cent, at 17,782 points, the highest level since February 2008. Similarly, the wide-based National Stock Exchange Nifty index rose by 22 points, or 0.41 per cent, to 5,325.