Moving averages & trend tools
Moving averages smooth the noise so you can see which way the river is really flowing.
Builder · 9 min · Updated 2026-11-08
💡 The average of your last ten cricket scores
One innings of 0 or 120 does not tell you how good a batter is. The average of the last ten innings does — and it changes slowly. A moving average does the same for price: it smooths out wild single candles. The catch: an average always reacts after the change, like a batting average that only drops after several bad innings.
SMA vs EMA
| Type | How it works | Personality |
|---|---|---|
| SMA (simple) | Plain average of the last N closes | Smooth, slower |
| EMA (exponential) | Gives more weight to recent closes | Faster, reacts sooner, more false signals |
Popular lengths and what they are used for
- 20 EMA: short-term trend; in strong trends price often pulls back to it.
- 50 SMA/EMA: medium-term trend.
- 200 SMA (daily): the classic long-term trend line. Many investors consider price above a rising 200-day average a "healthy" long-term trend.
Three ways to use moving averages
- Trend filter: only consider long ideas when price is above a rising 50 or 200 average; be cautious below a falling one.
- Dynamic support/resistance: in trends, pullbacks often pause near the 20 or 50 average.
- Crossovers: a golden cross is the 50-day crossing above the 200-day; a death cross is the reverse. They confirm big trend changes — usually late.
The lag problem
Because averages use past prices, crossovers arrive after much of the move has happened. In sideways markets they whipsaw: cross up, cross down, cross up, each time generating a small loss. That is why many traders combine averages with market structure and a trend-strength filter like ADX (above ~20–25 suggests a trend is present).
Other trend tools on the Pro Chart
- Supertrend: a line that flips above/below price using ATR — a simple trailing-stop guide.
- Ichimoku cloud: a full trend system; price above the cloud suggests an uptrend.
- VWAP: the volume-weighted average price for the session — popular with intraday traders.
🧮 Practical example: a trend filter in action
Key takeaways
- SMA = smooth and slow; EMA = faster and noisier.
- 20/50/200 are popular because many watch them.
- Use as trend filter, dynamic support or crossover.
- All averages lag; they whipsaw in ranges.
Education only — not financial advice.