REX Oscillator

The Rex Oscillator is a study that measures market behavior based on the relationship of the close to the open, high and low values of the same bar. The theory behind the Rex Oscillator is that a big difference between the high and close on a bar indicates weakness. Conversely, wide disparity between the low and close indicates strength. The difference between open and close also indicates market performance.

The True Value of a Bar (TVB) gives us an indication of how healthy the market is. It is possible to have a negative close and a positive TVB, and vice versa. This indicates that the market is building strength on the opposing side of the trend. The Rex Oscillator is a moving average of the TVB, indicating the inertia of the market. When the Rex Oscillator turns positive in a bearish trend, a reversal is indicated. Likewise, Rex turning negative in a bull market indicates a reversal to the downside.

The TVB is defined as:

TVB = (Close-Low) + (Close - Open) - (High - Close), or

= 3 * Close - (Low + Open + High)

Rex Oscillator (n periods) = moving average (n periods) of TVB

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