Equity benchmarks Sensex and Nifty 50 extended intial losses on February 26 amid weakness in banking and heavyweight stocks. However, analysts believe that the bullish sentiment is intact as long as Nifty holds above 21,000 level. Sensex and Nifty declined 0.4 percent each to 72,789 and 22,120, respectively on February 26. Fear gauge India VIX jumped over 4 percent to trade above 15.