Varun sir, thanks for great explanations. Simple common sense concepts when you explain them. Frankly speaking, I am bit nervous about deriving positional or swing bias based on 1 min OBV chart and PDC line. Many times its so happen that other higher time frames close below PDC but 1 min closes above PDC and still we give more weightage to 1 min close and conclude that trend is up. This is my biggest doubt. Thanks for all your support and I have started using OBV iny trades.