When you look at the chart, you get a buy signal at 3581 (Green horizontal line) by both OBV and Price as both of them went above 200EMA (blue lines). Probably one could have got this signal by using any indicator also. But here is where it gets interesting.At around 5:20 price went below 200EMA. Any indicator one would have used would have made you exit your position. But just look at OBV, it did not go below 200EMA and gave you an assuarance that price may not fall and instead of exiting your position at around 3620 you could ride the trend to 3660 levels. The difference in profits was almost double 80 instead of 40.