TRIX

TRIX: The Triple-Smoothed Momentum Oscillator That Filters Market Noise

Updated: 2026-03-01 · Expert Analysis by Senior Trading Analyst · SEO Optimized for Traders

Executive Summary

TRIX is a momentum oscillator that shows the percentage rate of change of a triple exponentially smoothed moving average. Developed by Jack Hutson in the early 1980s, its defining characteristic is aggressive noise filtering: by smoothing an EMA three consecutive times, TRIX eliminates the insignificant short-term fluctuations that generate false signals in simpler oscillators. The result is a cleaner, lower-frequency view of underlying trend momentum — with the trade-off of increased lag. For swing traders and position traders who want fewer but higher-quality signals, TRIX is a superior alternative to MACD.

1. Introduction: Engineering Out Market Noise

Jack Hutson, former editor of Technical Analysis of Stocks & Commodities magazine, introduced TRIX in the early 1980s with a specific goal: eliminate the whipsaws that made trend-following oscillators so frustrating to trade. His observation was that most momentum indicators reacted to too many insignificant price fluctuations, generating dozens of signals per month — the majority of which were just noise.

Hutson's solution was to apply an EMA not once (standard), not twice (Double EMA), but three times in succession. Each additional smoothing pass filters out progressively shorter cycles of noise. After three passes, nearly all the short-duration fluctuations that plague single-smoothed oscillators are removed. What remains is a slow, deliberate picture of the true underlying trend momentum — less reactive, but dramatically more reliable.

2. How It Is Calculated (Plain English)

The calculation has four steps. First, calculate a 15-period EMA of the closing price. Second, calculate a 15-period EMA of that first EMA. Third, calculate a 15-period EMA of the second EMA — this is the triple-smoothed line. Finally, TRIX is the one-period percentage change of this triple-smoothed EMA: how much did the triple-EMA move today versus yesterday, expressed as a percentage.

The standard period is 15, though 12 gives slightly faster signals without sacrificing too much noise filtering. Many platforms allow adding a 9-period EMA of the TRIX line itself as a "signal line," making it operate similarly to MACD but with far smoother underlying data.

3. Reading the Signals

TRIX above zero and rising: The triple-smoothed trend is accelerating upward — strong, sustained bullish momentum.
TRIX above zero but falling: The uptrend is still intact, but momentum is decelerating. Consider tightening stops.
TRIX crosses above zero: High-conviction bullish trend confirmation. Rare false alarms due to triple smoothing, but often late.
TRIX crosses below zero: Bearish trend confirmed across all three smoothing layers.
Signal line crossover: TRIX crossing above its 9-EMA signal line gives earlier entries than waiting for the zero-line.
Divergence: TRIX divergences are infrequent but highly reliable precisely because triple smoothing ensures only deep, sustained momentum failures produce them.

4. Trading Strategies

Strategy 1: Zero-Line Crossover Trend Trade (EUR/USD Daily)

When EUR/USD's 15-period TRIX crosses from below zero to above zero, a new bullish trend has been confirmed by all three layers of smoothing. Enter long on the close of the crossover candle. Stop below the most recent swing low. These zero-line crosses are rare but carry strong conviction and often capture multi-week moves. Hold as long as TRIX stays above zero.

Strategy 2: Signal Line Crossover Entry (GBP/USD 4H)

Add a 9-period EMA of TRIX as a signal line. When TRIX crosses above the signal line while already above zero, momentum is re-accelerating within an established uptrend — a trend continuation entry. Enter long on the close; stop below the prior swing low. This generates earlier entries than zero-line crossovers while remaining directionally filtered.

Strategy 3: TRIX Weekly Macro Filter

Use the weekly TRIX as a top-down macro filter. If the weekly TRIX is above zero, only take long setups on the daily chart regardless of short-term bearish signals. If the weekly TRIX is below zero, only take short setups. This framework ensures daily trades are aligned with the confirmed macro momentum trend.

5. Best Timeframes and Markets

TRIX shines on the 4-hour and daily charts for major forex pairs and equity indices. On the weekly chart it acts as an excellent macro trend confirmation tool. Due to its heavy smoothing, TRIX is poorly suited to intraday trading — on 15-minute or 1-hour charts it is far too slow. It works best on liquid, trending markets (EUR/USD, GBP/USD, gold, S&P 500) with clear directional phases.

6. TRIX vs. MACD vs. ROC

vs. MACD: Both use EMAs and optional signal lines. MACD uses two separate EMAs (12 and 26) and is far more reactive — generating more signals, including more false ones. TRIX triple-smooths one EMA — fewer signals but dramatically more reliable in trending conditions.
vs. ROC: ROC is completely unsmoothed — raw momentum velocity with zero filtering. TRIX is the opposite: triple-smoothed for maximum noise reduction. Use ROC for real-time momentum data; use TRIX for high-conviction confirmed trend signals.

7. Common Mistakes Beginners Make

Expecting quick signals: TRIX's triple smoothing makes it inherently slow. The lag is the feature — it ensures signals are well-confirmed before they appear.
Using it for scalping or day trading: TRIX on a 5-minute chart produces signals delayed by hours relative to actual price moves. It is strictly a swing and position trading tool.
Ignoring magnitude: A TRIX barely above zero is very different from a TRIX at +0.30%. Always consider both direction and absolute level to assess trend strength.

8. Conclusion: The Analyst's Verdict

TRIX sacrifices speed to gain reliability — for swing traders and position traders, that is a trade worth making. Its zero-line crosses are rare but carry genuine conviction. Its divergences are infrequent but represent deep, sustained momentum failures. For traders burned by MACD whipsaws in choppy markets, TRIX is a compelling solution: the same core framework, but with noise filtered out at the source.

Senior Analyst's Pro Tip

"I use TRIX on the weekly chart as my macro momentum filter. If the weekly TRIX is above zero and rising, I only take long setups on the daily chart regardless of how bearish the short-term price action looks. If it is below zero and falling, I will not buy anything. TRIX's triple smoothing on the weekly timeframe behaves like a hedge fund's macro positioning model — slow, deliberate, and very accurate about the dominant medium-term trend."

FAQ

Q: What is the best TRIX period for forex daily charts?
A: The standard 15-period is the most common starting point. For slightly faster signals that still maintain good noise filtering, try 12. Avoid going below 10, where the triple smoothing begins to lose its noise-rejection advantage.

Q: Is TRIX better than MACD?
A: For swing and position traders on daily or weekly charts, TRIX is generally superior — fewer false signals and better trend confirmation. For short-term traders who need faster signals, MACD's responsiveness may be more appropriate.

Q: What does a TRIX divergence look like in practice?
A: During a EUR/USD multi-week rally, price makes new highs while TRIX peaks progressively lower at each high. Because of triple smoothing, this represents a deeply confirmed, multi-week decline in underlying momentum — a strong reversal warning.

Q: Can I combine TRIX with other indicators?
A: Yes. TRIX pairs well with ADX (confirm the market is trending before relying on TRIX crossovers) and with volume analysis (a zero-line cross with rising volume is a much higher conviction signal).