The Triple Exponential Moving Average Oscillator (TRIX) by Jack Hutson is a momentum indicator that oscillates around zero. It displays the percentage rate of change between two triple smoothed exponential moving averages.
\[EMA_{1} = EMA1_{n-1} + \frac{2}{(n + 1)} \times (P_{n} - EMA1_{n-1})\]
\(EMA2 = EMA2n-1 + ((2 / (n + 1)) * (EMA1n - EMA2n-1)))\
\(EMA3 = EMA3n-1 + ((2 / (n + 1)) * (EMA2n - EMA3n-1)))\
\(TRIX = (EMA3n - EMA3n-1 ) / EMA3n-1)\
Where: