Review- • Volatility ruled the roost as the key benchmark indices pared gains after a sharp surge in mid-afternoon trade. The 50-unit S&P CNX Nifty struck a 19-month high just below the 5,200 mark. Asian stocks rose. The BSE 30-share Sensex was up 104.93 points or 0.61%, up 137.95 points from the day's low and off 77.65 points from the day's high. The barometer index struck a 2-month high. Tata Motors surged to 52-week high.