You wanted a moving average that was fast and smooth at the same time, so you tried the ALMA, and it handed you two dials nobody explained: an offset and a sigma. Leave them alone and the line behaves. Nudge them without knowing what they do, and you can turn a sharp, early average back into a lagging one without realising you broke it. That is the strange part of this tool. Most averages give you one number to set. This one gives you three, and the extra two are exactly where its edge lives.
By the end of this guide you will know what each ALMA dial actually changes, whether the line repaints, and whether it earns a place over the EMA or the Hull average you may already be running.
Key Findings
- ALMA is a Gaussian-weighted average: it smooths price with a bell-shaped weighting you can slide toward recent bars, so it turns early while keeping a clean line.
- Two dials do the work: offset moves the weighting peak toward the current candle to cut lag, and sigma controls how sharply that weighting falls off.
- The edge is easy to lose: a wrong offset leans the average on old bars and quietly turns it slower than the EMA it was meant to beat.
- No history repaint on closed bars: printed values stay fixed once a candle closes; only the point on the live, unfinished bar keeps moving.
What is the ALMA indicator?
The ALMA is a moving average that smooths price with a Gaussian curve rather than a flat or exponential one. Its full name is the Arnaud Legoux Moving Average, after Arnaud Legoux and Dimitris Kouzis-Loukas, who published it in 2009. On the chart it is a single smooth line laid over price, like any average. What sets it apart is where it places its attention inside the lookback window.
A simple average treats every candle in its window as equally important, so prices from ten bars ago pull just as hard as the last close. That old data is what drags an average behind the turn. The ALMA weights the window with a bell curve instead, and then lets you slide the top of that bell toward the newest bars. Recent price carries most of the weight, the tails of the window fade out gently, and the line ends up both smooth and quick to react.
Picture a spotlight sweeping across your last several candles. A simple average spreads the light evenly. The ALMA focuses the beam, and it lets you aim that focus at the bars nearest to now.
How do offset and sigma change the line?
These two settings are the whole point of the indicator, and they pull in different directions. Offset decides where the weighting peak sits inside the window. Sigma decides how tightly the weight bunches around that peak. Get them right and the line is fast and calm; get offset wrong and you undo the reason you picked this tool.
| Setting | What it controls | Turn it up | Turn it down |
|---|---|---|---|
| Window (length) | How many candles feed the average | Smoother, slower to turn | Faster, more reactive to noise |
| Offset (0 to 1) | Where the weighting peak sits in the window | Hugs recent price, cuts lag | Leans on older bars, smooths harder, adds lag |
| Sigma | How sharply the weighting falls off | Wider, calmer spread | Tighter focus, sharper reaction |
The diagram below shows the idea. The bars are the candles in the window, oldest on the left, newest on the right. The height of each bar is how much that candle counts, and the offset has pushed the tall bars toward the recent side.
Slide that peak all the way left and you have rebuilt a slow, heavily smoothed average. Slide it right and the line snaps to recent price, which is what most traders want, but push too far and it starts reacting to noise again. The commonly published defaults, a window near 9 with an offset around 0.85 and a sigma near 6, are a sensible middle. They are a starting point to test, not a rule.
ALMA vs EMA vs Hull: which low-lag line wins?
The honest answer is that all three try to solve the same complaint and each pays a different price for it. The EMA is the simplest to run. The Hull average is the most aggressive out of the box. The ALMA is the most adjustable, which is a strength if you tune it and a trap if you do not.
| Line | How it cuts lag | Smoothness | Main trade-off |
|---|---|---|---|
| EMA | Fixed decay that weights recent closes more | Smooth | Still trails on sharp turns, nothing to tune |
| Hull (HMA) | Blends a fast and a slow weighted average | Smooth, can overshoot | Overshoots slightly at hard reversals |
| ALMA | Gaussian weighting you slide toward recent bars | Very smooth, tunable | Three settings to learn; wrong offset kills the edge |
If you want speed with no dials to fret over, the Hull moving average gets you most of the way with a single length. If your problem is chop rather than lag, an average that slows itself down in sideways markets will save you more whipsaw than any offset tweak. Reach for the ALMA when you specifically want to shape the balance between smoothness and speed by hand, and you are willing to spend a few sessions finding the offset that suits your pair.
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Get RelicusRoad ProDoes the ALMA indicator repaint?
On closed candles, no. When a bar finishes, the ALMA value for that bar is set, and if you scroll back a week later the line sits exactly where it did in real time. By that measure it is an honest indicator, the same as a plain moving average.
The doubt comes from the live candle, and the offset makes it more noticeable here than with a slower average. Because the weighting leans toward the newest bars, the last point of the line reacts hard to the price that is still forming. It can lift, then sink, then settle by the time the candle closes. That movement is the average recalculating on data that is not final yet, not a rewrite of what already printed. A slow simple average hides this because it barely reacts to one live bar; the ALMA shows it plainly because reacting quickly is its job.
If you want a repeatable way to prove any tool holds its signal after the close, our explainer on non-repaint forex indicators walks through the exact bar-replay check, step by step.
How do you trade with the ALMA?
There are two clean jobs for this line, and the wreck happens when a trader asks it to do both at once with one setting.
As a trend filter, a longer ALMA gives you a slope to obey. While the line rises and price holds above it, you hunt only for longs; while it falls and price sits below, only shorts. You are not trading the line, only using its direction as a gate, so it costs almost nothing in false signals and keeps your bias pointed the right way.
As an entry timer, a shorter ALMA marks the moment a swing turns. Here the offset that makes it quick also makes it eager, so the rule is to wait for the candle to close and to want one more piece of agreement before you act. A slow ALMA setting the direction and a faster one timing the entry give you a two-part check instead of a single trigger that fires on every flicker.
An indicator will not fix loose risk. A smooth, early line points you the right way; it does not size the trade or set the stop. Position size, a defined exit, and the patience to pass on the marginal setup are what actually keep an account alive, and no amount of tuning replaces them. For the wider picture on filtering whipsaw, the moving average crossover strategy guide covers the confirmation rules that pair well with a fast line like this one.
Where RelicusRoad Pro fits
Every worry on this page comes back to one thing: can you trust the read in front of you? A line that swings on the live candle, an offset you are not sure you set right, an entry that looked clean on replay but flickered in real time. RelicusRoad Pro is built to lock its signals at the candle close, so what you saw when you entered stays on the chart afterward, the same way across MT4, MT5, and TradingView. It does not replace a smoothing line like the ALMA. It takes away the guesswork about whether the signal beside it is final or still moving.
Frequently asked questions
What is the ALMA indicator?
The ALMA, or Arnaud Legoux Moving Average, is a moving average that smooths price with a Gaussian weighting curve instead of a flat or exponential one. Arnaud Legoux and Dimitris Kouzis-Loukas introduced it in 2009 to get a line that reacts early without the jitter of a short fast average. Two settings shape it: an offset that slides the weighting peak toward the most recent candles, and a sigma that controls how tightly the weighting concentrates around that peak. The result is a smooth line that can turn close to where price actually turns.
Does the ALMA indicator repaint?
On closed candles the ALMA does not repaint. Once a bar closes, the value it printed is fixed, and scrolling back later shows the same line you saw live. The part that trips people up is the unfinished candle: because the offset leans the average toward recent price, the newest point can shift noticeably as the live bar ticks, then settle when the candle closes. That is normal recalculation on incomplete data, not a rewrite of history. Treat the last point as provisional until the close.
What are the best ALMA settings?
There is no single right answer, but the widely published starting point is a window near 9, an offset around 0.85, and a sigma near 6. Raise the window for a smoother, slower line and lower it for a faster, noisier one. Push the offset toward 1 to hug recent price and cut lag, or toward 0 to lean on older bars and smooth harder. A smaller sigma sharpens the reaction; a larger one spreads the weighting and calms the line. Change one dial at a time and watch how often the line flips on your pair and timeframe.
What is the difference between ALMA and EMA?
Both weight recent prices more heavily, but an exponential moving average uses a fixed decay you cannot steer, so it always trails a little on sharp turns. The ALMA weights its window with a Gaussian curve you can slide toward the newest bars, which lets it turn earlier than an EMA of the same length while staying smooth. The cost is complexity: the EMA has one number to set, the ALMA has three, and a badly chosen offset can leave it slower than the EMA you were trying to beat.
How do you trade with the ALMA?
Most traders use it in one of two roles. As a trend filter, a longer ALMA gives a slope rule: look for longs only while the line rises and price holds above it, shorts only when it falls and price sits below. As an entry timer, a shorter ALMA marks the moment a swing turns, and the discipline is to wait for the candle to close before acting and to demand one piece of confirmation alongside the turn. Pairing a slow ALMA for direction with a faster read for timing beats trading a single hair-trigger line.
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