Strong banker control: 1. OBV(blue line) always above OBV MA20(orange line); 2. OBV MA20 pointed upward; and 3. close to All time high OBV(purple line).
Weak banker control 1. OBV pointed downward; and 2. OBV cross under OBV MA20.
Do not trade if OBV crossed under OBV MA40(green).
When OBV crosses under OBV MA20 and OBV MA40, both will turn red.