As we can see BANKNIFTY had been in downtrend since last week now respecting a trendline, watching in a bigger time frame we can see BANKNIFTY in more like inverted flag pole pattern which is more like a bearish continuation pattern hence we can expect BANKNIFTY to break down but important levels to watch out are 41500-41800 being an very important SUPPORT and resistance being 42700 to which break above given level could show 200-300 points upside so keep watching everyone