Banknifty future today closed at 15876 with gain of 224 points. As expected banknifty respected 15500 support and given strong reversal from support. Today we saw high above 15900. On upside swing targets are 16900 and 17700 while on downside 15500 will act as strong support. Above it keep buy and accumulate view. For intradaysupport zones are 15800 and 15600. traders keep buy and accumulate view on 15500 call options.