TRIX

Momentum

What it measures

TRIX applies a triple-smoothed exponential moving average to price, then takes the percentage rate of change of that triple-smoothed line. The triple smoothing filters out short-term price noise far more aggressively than a single EMA, leaving a cleaner momentum signal built for spotting sustained trend changes rather than every minor wiggle.

How readings are interpreted

TRIX oscillates around zero. Positive and rising means the triple-smoothed trend is accelerating upward; positive and falling means the uptrend is decelerating even though price may still be rising. The zero-line cross is the headline signal — because of the triple smoothing it lags more than most oscillators, but it's also far less prone to whipsaw.

Conventional levels

TRIX crosses above zero: bullish trend-change signal
TRIX crosses below zero: bearish trend-change signal
TRIX rising while price makes a new high: healthy trend continuation
TRIX falling while price makes a new high: bearish divergence, momentum fading
A signal-line cross (TRIX vs. its own moving average) can be used for earlier, noisier entries

Where it works, and where it does not

Because of the triple EMA smoothing, TRIX is inherently a lagging indicator — it's built to filter out noise, not to be early. It works best on daily or higher timeframes for identifying established trend changes, not for fast scalping or catching the exact top or bottom.

Commonly read alongside

MACD: Both are trend-following momentum tools; TRIX confirming a MACD crossover reduces false signals from either alone
ADX: TRIX signals are more reliable when ADX confirms the market is actually trending
Volume: Rising TRIX with rising volume is a stronger continuation signal than TRIX alone

Known limitations

The triple smoothing means TRIX is meaningfully slower to react than RSI, MACD, or Stochastic — expect late entries and exits
In choppy, non-trending markets TRIX will drift near zero and cross back and forth with little useful signal
Not designed to identify overbought/oversold extremes the way RSI or Stochastic are

In practice

Best used as a trend-confirmation filter alongside a faster indicator, not as a standalone entry trigger
Watch the zero-line cross for the primary signal; use the TRIX/signal-line cross only if you want earlier (and noisier) entries
Given the lag, it is conventionally used alongside a defined risk approach rather than for precise turning-point entries
More useful for position/swing trading than day trading given its inherent smoothing delay

Plot it yourself. Add this indicator to a chart, change every parameter and watch the line move, then backtest how the rule would have behaved on historical data — free on the S&P 500 ETF, no card.

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This is reference material, not advice. It describes what each indicator measures and how its readings are conventionally interpreted. Nothing here is a recommendation to buy or sell anything, and no indicator predicts future prices. GU Analyser is an analytical tool — no money is ever traded here.