TRI-ple eXponential. TRIX displays the % rate-of-change of a triple exponentially smoothed moving average of the closing price of a security.

TRIX is calculated as a one period rate of change of the third exponential moving average pass of the closing price.

TRIX is designed to filter out insignificant cycles - those smaller than the number of moving averages specified. The TRIX indicator oscillates around a zero line. Trades should be placed when the indicator changes direction.