The benchmark equity index Nifty 50 ended Thursday's trading session on a positive note after touching a lifetime high of 22,126.80. The NSE Nifty 50 closed 156.35 points or 0.72% higher to settle at 21,853.80 points. While S&P BSE Sensex gained 440.33 points lower or 0.61% to settle at 72,085.63 points. Flipping the trend, the sectoral-indice Nifty Bank lost 217.70 points.