--- title: "TRIX: Formula, Meaning & Signals" description: "Jack Hutson's TRIX is the one-period percentage rate of change of a triple-smoothed exponential moving average. The triple smoothing removes short cycles..." canonical: https://www.getswoopr.com/indicators/trend/trix/ source: "Swoopr Investment: https://www.getswoopr.com" --- ## Direct Answer > TRIX is a trend measure used to describe trend direction, persistence, strength, or a smoothed price reference. The production page must define the exact calculation convention before interpreting higher or lower readings, because platform and provider implementations can differ. # TRIX: Formula, Meaning, Signals, Examples and How to Use It ## How Is TRIX Calculated? Jack Hutson's TRIX is the one-period percentage rate of change of a triple-smoothed exponential moving average. The triple smoothing removes short cycles, leaving a slow oscillator around zero. **Formula:** `TRIX = 100 * (EMA3(t) - EMA3(t-1)) / EMA3(t-1), where EMA3 = EMA(EMA(EMA(Close, n), n), n)` **Inputs:** - Closing prices - EMA period n (15 is a common setting) - Optional signal line **Worked example.** If the triple-smoothed EMA moves from 100.0 to 100.5, TRIX is 0.50%. The inputs are illustrative numbers, not market data. **Reading it.** Positive TRIX means the triple-smoothed average is rising and negative that it is falling. Zero-line crossings indicate a change in the direction of the smoothed trend, and crossings of a signal line are also watched. **Limits.** The triple smoothing causes significant lag, so signals are late. It moves very little in short-lived moves and can whipsaw around zero when price is flat. ## Indicator overview | Attribute | Value | | --- | --- | | Category | Trend | | Asset classes | Stocks, ETFs, Indexes, Futures, Forex, Crypto, Commodities | | Output type | Line/scalar | | Parameters | Varies by implementation; document exact settings on use | ## What is TRIX? TRIX is a trend measure used to describe trend direction, persistence, strength, or a smoothed price reference. The production page must define the exact calculation convention before interpreting higher or lower readings, because platform and provider implementations can differ. For Swoopr, the canonical profile separates definition, calculation, interpretation and decision use. That keeps readers from collapsing a descriptive metric into a trading strategy. An indicator can describe trend, momentum, volatility, participation, positioning or risk without providing a complete entry, exit, sizing or portfolio decision. ## What does it measure? TRIX measures specific market properties in the Trend domain. The practical value is repeatability: the same inputs and formula can be applied across a defined dataset, allowing users to compare readings through time or across instruments when the calculation convention is held constant. ## How to read TRIX Interpretation depends on the market property being measured. A descriptive reading is not automatically predictive. The same numerical state can lead to different outcomes in a strong trend, quiet range, event-driven gap or illiquid market. Always combine with context from price structure, volume, and broader market regime before drawing conclusions. ## Strengths - Taking a percentage rate of change of a smoothed series removes the level, so values read as percent change per bar. - The triple smoothing filters out cycles shorter than the period, so zero-line crossings reflect changes in the smoothed average's direction rather than single-bar moves. - Reproducible when the formula and data convention are fixed. ## Weaknesses and limitations - The result is the slope of a lagged series, so peaks in TRIX occur after the turn in the average, which itself came after the turn in price. - The smoothing period n sets both the filter cutoff and the oscillator's sensitivity, so short and long settings yield very different amplitudes. - Correlated indicators can create false confidence by repeating the same underlying information. ## Choose your next step ### Apply - [TRIX Indicator Explained: Formula, Zero-Line Signals, and Settings](https://www.getswoopr.com/learn/technical-analysis/indicators/trix/) Step-by-step use, worked examples and the mistakes to avoid ## Related Swoopr content - Related guide: [TRIX Indicator Explained: Formula, Zero-Line Signals, and Settings](https://www.getswoopr.com/learn/technical-analysis/indicators/trix/) ## Editorial and risk note This page is educational content, not individualized investment advice. It should not imply guaranteed prediction, accuracy or outperformance. Where multiple valid definitions exist, Swoopr states the alternatives and the reason for selecting its primary convention. ## Frequently Asked Questions Is TRIX a buy or sell signal? No. Positive TRIX means the triple-smoothed average is rising and negative that it is falling. The triple smoothing causes significant lag, so signals are late. A trade built on it still needs a trigger, an invalidation rule, a position size and realistic execution assumptions. What is the best setting for TRIX? TRIX takes these inputs: closing prices; EMA period n (15 is a common setting); optional signal line. There is no universal best setting for the tunable ones, so test them across instruments, regimes and out-of-sample periods and favor stable parameter regions over one historical winner. Can TRIX be used by itself? The triple smoothing causes significant lag, so signals are late. It moves very little in short-lived moves and can whipsaw around zero when price is flat. For that reason it is read next to measures of direction, participation, valuation, liquidity and risk, not alone. Does TRIX work on every timeframe? The calculation (TRIX = 100 * (EMA3(t) - EMA3(t-1)) / EMA3(t-1), where EMA3 = EMA(EMA(EMA(Close, n), n), n)) can be run on any bar size, but behavior is not portable: a reading on a five-minute chart describes a very different market window from the same reading on a daily chart. Validate the exact timeframe before relying on it. Why does TRIX give false signals? The result is the slope of a lagged series, so peaks in TRIX occur after the turn in the average, which itself came after the turn in price. The smoothing period n sets both the filter cutoff and the oscillator's sensitivity, so short and long settings yield very different amplitudes. Lag, noise and regime changes add to this, because market participants react to new information after the reading is calculated. How should TRIX be backtested? Rebuild TRIX from closing prices using point-in-time data, write the rules before testing, include delisted securities where relevant, model realistic fills and costs, reserve a validation sample and compare with a simpler baseline. S Swoopr Editorial Team The Swoopr Editorial Team produces independent investment education, research, and tools for understanding markets, evaluating opportunities, and managing risk. All content is educational only and does not constitute personalized investment advice. See our [editorial policy](https://www.getswoopr.com/legal/editorial-policy/) and [corrections policy](https://www.getswoopr.com/legal/corrections-policy/).