TRIX: A Triple-Smoothed Momentum Oscillator

TRIX smooths price three times to filter noise and display momentum. This guide explains how traders read its direction and strength, along with its limitations.

What is TRIX?

TRIX, or Triple Exponential Average, applies an exponential moving average, EMA, three times in succession, then plots the percentage change in the result. Introduced by Jack Hutson in the 1980s, it aims to filter short-term noise and retain meaningful trend momentum.

Ordinary momentum measures can react strongly to small fluctuations. Triple smoothing produces a comparatively smooth curve. The original guide describes it as less sensitive to temporary price noise and movements associated with abrupt volume changes. Above zero is interpreted as upward momentum and below zero as downward momentum.

Calculation and the signal line

The calculation proceeds as follows:

• Apply an N-period EMA to closing prices: first smoothing.
• Apply an EMA to the first EMA: second smoothing.
• Apply another EMA to the second EMA: third smoothing.
• Calculate the third EMA's one-period percentage change: TRIX.

A short EMA of TRIX itself is often added as a signal line. Crosses between the two lines are a common signal interpretation.

Using divergence

TRIX is also used to inspect divergence. Similar to RSI divergence, a disagreement between price and indicator direction can suggest a possible trend change.

Divergence suggests a possibility, not a guaranteed reversal time. A trend can continue long after divergence appears. Compare it with support and resistance and other evidence rather than entering from it alone.

Limitations of TRIX

TRIX has clear weaknesses:

• Lag: Three rounds of smoothing delay signals and can miss the beginning of sudden moves.
• Weakness in ranges: Directionless markets can produce frequent false crosses around zero.
• Parameter sensitivity: The selected period N changes signal frequency and behavior substantially.

TRIX is most useful as supporting evidence in a clear trend. Combine it with volume, trendlines and risk controls such as stops, rather than making every decision from one indicator.

Closing perspective

TRIX filters noise to display momentum; it is not a magical forecast or profit guarantee. Account for lag and false signals, and validate its use within your own trading and risk-management rules.

This article is educational and is not an investment recommendation. Cryptocurrency is highly volatile and can cause loss of principal. Decisions and their consequences remain the investor's responsibility.