On 15m Chart Fresh long position indicated on 4th Aug at 12:00 to be held until negative crossover of conversion line and base line.
Weekly Chart of banknifty is still Bullish. Any close below 44850 is the indicator to exit long position and book profit. Fresh upside is possible above 47370.
Nifty may trade between the range of 19990 and 19300. 19500 is the level to watch. 19540, 19790 are the key resistances.