Increasing OBV values indicate more buying, hence a tendency to push the price up. Decreasing OBV values indicate less buying or selling, hence a tendency to push the price down. The price average that we pick determines our investment approach. It is a good sign of our individual philosophies. There are probably a hundred or so individual indicators in the field.
Some computer programs contain most, others just a few.
It is up to us and our knowledge to extend these historical curves into the future. There is no predictive computer or any other approach. These changes are tied to market conditions, product acceptance, financial dates, dividend payments and other factors. Often outside or inside conditions change, and the rhythm changes, disappears, or re-emerges at a different frequency. Dividend-payment related price variations are most common but with few exceptions do not amount to much.