A moving average is the average closing price of the last N candles, recalculated with every new candle. It smooths out noise and shows the direction of the market at a glance. It does not predict anything: it lags price by design.
SMA vs EMA
The simple moving average (SMA) gives every candle the same weight. The exponential moving average (EMA) gives more weight to recent candles, so it reacts faster. Short-term traders usually prefer EMAs; the 200-day SMA remains a classic long-term reference that many institutions watch.
Use 1: trend filter
Only take longs when price is above the 200 EMA on your main timeframe, and only shorts when it is below. This one filter removes many of the worst trades: counter-trend entries in strong moves.
Use 2: dynamic support and resistance
In a healthy trend, price often pulls back to the 20 or 50 EMA and bounces. Combined with a confirmation candle, these pullbacks give entries with a clear stop below the average.
Use 3: crossovers
A fast average crossing above a slow one (for example 9 EMA over 21 EMA) signals that momentum turned up. Crossovers work well in trending markets and badly in ranges, where they whipsaw repeatedly. Use them with a trend filter, never alone.
Settings that are worth knowing
- 20 EMA: short-term trend and pullbacks on intraday charts.
- 50 EMA: medium-term trend on 1-hour and 4-hour charts.
- 200 EMA or SMA: long-term trend; the line many traders watch.