Part 8 · Leading indicators — momentum and oscillators · Chapter 89
TRIX
A triple-smoothed rate of change: it strips the noise so completely that what remains is clean, calm, and slow.
12 min
Prerequisites not yet complete
This module builds on Chapter 88: Awesome Oscillator. You can read on, but the sequence is load-bearing.
The question
The last two tools gave us pace, but both were twitchy — momentum jumped on every wiggle, and even the Awesome Oscillator flickered green to red on small moves. In a noisy market that twitchiness produces a stream of false alarms. So a fair question: what if we cared less about catching the turn early, and more about only being told when the turn is real?
That is the bargain offers. It takes the rate of change of price and smooths it — not once, but three times over — until almost every jiggle is gone and what remains is a slow, clean line that changes direction only when the underlying trend genuinely does. TRIX is the calm one in this part of the book. Its calmness is a real virtue and, as you will see, its calmness is exactly what costs you.
Why this exists
TRIX exists for readers who are tired of being whipsawed. Its name is a compression of its recipe: TRIple-smoothed exponential rate of change.
Work through the recipe slowly, because the shape of the tool falls straight out of it. A smoothed average — an exponential moving average, or EMA — is a running mean that leans on recent prices more than old ones, gliding along and filtering out day-to-day noise. TRIX does this filtering three times in a row:
- Take an EMA of the closing price.
- Take an EMA of that first EMA.
- Take an EMA of the second EMA.
By the third pass, almost every short-term wiggle has been averaged out of existence; what is left is an extremely smooth line tracing only the slow bones of the trend. TRIX then plots not that line itself, but its rate of change — how fast that thrice-smoothed line is rising or falling, as a percentage — around a central zero line. Above zero, the smoothed trend is climbing; below, it is sinking.
Most charts add a second line: a , which is simply a short average of TRIX itself. Where TRIX crosses its signal line is the tool's main trigger, in the same spirit as MACD's crossover from the previous part.
The mechanics
The defining feature of TRIX is what it leaves out. Because it is smoothed three times, small counter-moves simply never appear on it. That is the point — and the sub-panel below shows the price it charges for the privilege.
Two readings do the work:
- The zero line. TRIX above zero means the deeply-smoothed trend is still rising; below zero means it is falling. Because of all the smoothing, TRIX crosses zero rarely and late — but when it does, it is usually reflecting a real change in the trend's bones, not a passing wobble.
- The signal-line crossover. TRIX crossing above its own signal line is the buy trigger; crossing below, the sell. This fires earlier than the zero cross but is still, unavoidably, behind price.
The honest way to hold TRIX in your head is as the mirror image of plain momentum. Momentum is fast and noisy: early, but wrong a lot. TRIX is slow and clean: right about the trend, but late. Neither is better; they sit at opposite ends of the same unavoidable trade-off.
Read it live
Watch TRIX stay calm through a shakeout that would have whipsawed a faster tool. illustrative
Follow the price. The stock climbs from ₹200 to ₹231, then pulls back to ₹218 over three sessions — an ordinary shakeout — before turning back up to a new high near ₹234. A fast momentum tool would have crossed zero on that dip, flashed a sell, and then had to flash a buy again a week later: two whipsaws, two chances to be shaken out of a trend that never actually broke. TRIX, buried under three layers of smoothing, barely registers the dip. Its line dimples slightly and keeps its shape; it never crosses its signal line, so it never tells you to sell the trend you correctly wanted to hold.
That is TRIX at its best — refusing to react to a wobble that meant nothing. But turn the case around, as the mechanics figure did, and the same deafness is a liability: when the dip is not a wobble but the real top, TRIX will keep you in it, calmly, well past the point a faster tool would have got you out. The virtue and the vice are one property. You do not get to keep the calm and drop the lag.
What it cannot tell you
TRIX's smoothness is honest about only one thing and silent on the rest.
It cannot be early. This is not a flaw to be tuned away; it is arithmetic. Three passes of averaging must delay the signal, because each pass leans on past values. Anyone promising TRIX signals that are both smooth and early is promising something the maths forbids.
It cannot help you in a fast reversal. When a stock gaps down hard on news, TRIX descends slowly and gracefully while your capital falls quickly and painfully. For catching sudden breaks it is close to useless; that is not its job.
It cannot tell you the smoothing was set 'right'. Change the lengths and every zero cross and crossover moves. Sliding those lengths until TRIX would have nailed the last big trend is the familiar trap. , and TRIX's several adjustable lengths give that self-deception plenty of room.
And it decides nothing about worth. , and even a correct read on the trend says nothing about whether the company is one to own.
Where people get fooled
TRIX fools people in the opposite direction from momentum — through its calm, not its noise.
Mistaking smooth for accurate. A clean, unhurried line feels more trustworthy than a jagged one. But smoothness is a cosmetic property of averaging, not evidence that the reading is right. A confidently late signal is still late.
Forgetting the lag when it matters most. In a calm trend TRIX's lag costs little. In a violent reversal it costs a great deal, and that is exactly when readers, lulled by weeks of TRIX being 'right', trust it longest.
Optimising the lengths. Because TRIX has several adjustable numbers, it is unusually easy to fit to a chart you have already seen. The result looks brilliant on that chart and ordinary on every other.
Decide
Test your reading, not your memory — short decisions under incomplete information. The answer only shows after you commit.
All figures are illustrative — constructed to demonstrate a judgement, not reported as fact.
Carry forward
- TRIX is the rate of change of a thrice-smoothed (triple-EMA) price line, plotted around a zero line, usually with a signal line for crossovers. The triple smoothing strips out almost all short-term noise.
- That smoothness is its whole character: it rarely whipsaws and reads the trend's bones cleanly — but it is unavoidably late, because every pass of averaging adds delay.
- Smooth and early is a contradiction. TRIX sits at the calm-but-slow end of the same trade-off where plain momentum sits at the fast-but-noisy end; neither escapes it.
- Its several adjustable lengths make it easy to fit to a past chart — a clean backtest here is a red flag, not a discovery.
Enables: 089 Ultimate Oscillator
TRIX buys you calm by selling you time — it is right about the trend and late to say so.
The thinkers this chapter leans on.