Generally, the obv index has only one white line, which is the real-time embodiment of obv quantity.

But usually, when using it, investors will add a yellow line to represent the average line of obv energy tide. Most trading software defaults to a 30-day moving average.

The energy tide indicator obv predicts the stock price trend by counting the change trend of trading volume. It takes "N" shape as fluctuation unit, and multiple "N" waves form the curve of obv. For the "N" waves that are higher than each other, it is called "high tide", and as for the ups and downs in the high tide, it is called "low tide".