Technical Analyst, owner of TRADEMANIAC
If BNF breaks previous day high, you can make position for buy side. If it sustained below 42378, then down side target is, 42322,42250
tv chart:-https://in.tradingview.com/chart/BANKNIFTY/CEtJNiD9-BANKNIFTY-VIEW/https://in.tradingview.com/chart/BANKNIFTY/CEtJNiD9-BANKNIFTY-VIEW/