EMA or SMA — which should I use?

EMA reacts faster and gives more false turns; SMA is smoother and later. Pick by how much noise your horizon can absorb, and be consistent — switching between them after the fact is how people talk themselves into any conclusion.

Is a golden cross a buy signal?

It is a description of what already happened: two averages of past prices changed order. The move that caused it has been running for a while by then.

Why does the 200 matter more than other averages?

Because far more people watch it. The level has no special property of its own — it works as a coordination point, and that is enough to make reactions real.

Moving averages

The average price over the last N candles, redrawn each candle. The simplest way to ask whether price is above or below where it has recently been.

Updated September 4, 2026

EMA and SMA — the only real difference

A simple moving average (SMA) treats all N candles equally. An exponential one (EMA) weights recent candles more heavily, so it turns sooner and hugs price more closely.

Neither is better. The EMA reacts faster and therefore whipsaws more; the SMA is calmer and therefore later. Which one suits you is a question about how much noise you are willing to trade against.

The stack, and what it actually tells you

The terminal shows 20, 50 and 200. Their order is the whole message:

20 above 50 above 200 — price has been rising over short, medium and long windows at once. That is what an uptrend looks like measured three ways.
20 below 50 below 200 — the mirror case.
Tangled together — the windows disagree, which is what a range looks like. Reading direction from a tangled stack is reading noise.
The 200 is watched far more than the others, which makes it self-fulfilling: reactions happen there because everyone is looking at it.

Crossovers arrive after the move

A "golden cross" or "death cross" is two averages of past prices swapping order. By the time it happens, the move that caused it is well underway — that is arithmetic, not opinion.

They are useful as a description of regime, not as an entry. Treating a crossover as a trigger means buying what already ran.

Why they work at all

There is nothing predictive in an average. It works to the extent that enough participants place orders around it — the level is a coordination point, not a force.

That also explains why the standard periods behave better than clever ones: 20, 50 and 200 are watched by everyone, and a period nobody else uses has no crowd behind it.

Common questions

EMA or SMA — which should I use?: EMA reacts faster and gives more false turns; SMA is smoother and later. Pick by how much noise your horizon can absorb, and be consistent — switching between them after the fact is how people talk themselves into any conclusion.
Is a golden cross a buy signal?: It is a description of what already happened: two averages of past prices changed order. The move that caused it has been running for a while by then.
Why does the 200 matter more than other averages?: Because far more people watch it. The level has no special property of its own — it works as a coordination point, and that is enough to make reactions real.