Whats the premise for such an unusual activity anticipated in Banknifty .......
maybe some big guys speculating on hawkish monetary policy ..... or some new NPAs announcement in banking sector ....... at best a speculation ..... or some insider info ... ??
4-5%downmove in Bn in under a week isnt happening unless there is some terrible news to boot. A suprise rate hike (.01% chance ) or some terrorist act or something of that order is needed for this.