Moving averages

There are two common types. A simple moving average (SMA) weights every bar in its window equally. An exponential moving average (EMA) weights recent bars more heavily, so it reacts faster to new price. Neither is 'better' — the EMA turns sooner (good for catching moves, bad for whipsaws), while the SMA is steadier.

Popular settings carry meaning because so many people watch them. The 200-period MA is the classic line between long-term bull and bear regimes; the 50 tracks the intermediate trend; the 20 hugs the short-term swing. Because these are widely watched, price often reacts at them — a self-fulfilling effect.

The simplest use is as a trend filter. Price trading above a rising moving average signals a healthy uptrend; price below a falling average signals a downtrend. Many traders use this as a basic rule: only look for longs while price is above the 50 or 200, only shorts while below. It keeps you on the right side of the bigger flow.

Moving averages also act as dynamic support and resistance. In a strong trend, pullbacks frequently stall and reverse right at a key average — the rising 20 or 50 EMA becomes a moving floor that buyers defend. This gives you a recurring, logical place to look for with-trend entries.

When a faster MA crosses above a slower one, momentum has shifted up — the famous 'golden cross' (e.g. 50 crossing above 200) is a classic bullish signal. The reverse, a 'death cross,' is bearish. Traders also use price crossing a single MA as a simpler entry or exit trigger.

Be clear-eyed: crossovers lag. By the time two averages cross, a good chunk of the move has already happened. They confirm trends rather than predict them, which is fine — confirmation is valuable — but it means you'll never catch the exact bottom or top with a crossover, and you shouldn't try to.

Moving averages are trend tools, full stop. In a choppy, sideways range they are actively harmful — price crisscrosses the average constantly, generating a stream of false crossover signals that whipsaw you in and out for repeated small losses. This is the number-one way beginners lose money with MAs.

The fix is to know your regime first. Use moving averages to ride and filter trends, and switch them off (or switch to range tactics like buying support and selling resistance) when price is going nowhere. A tool used in the wrong conditions isn't an edge — it's a liability.