DislikedI have done some more reading overnight guys, and fundamentally this is a 'feature' with OBV, and that is why it is very much a visual aid to trading rather than the numbers being meaningful. So you can load it one day on one chart and depending on the timing of the data feeding it get a different result loading a chart one week later. The other interesting 'feature' is that OBV does not take into account the size of the price movement in relation to the volume measurement. This means that news spikes, large candles etc (which can vary significantly...Ignored
Good enough is enemy of the best.