📈 Trading strategy

Trend Following (Moving-Average Crossover): How It Works, Rules & Example

Trend following with moving-average crossovers aims to ride sustained price trends and step aside when they fade. A fast average crossing above a slow average signals a possible uptrend, and crossing below signals weakness.

IntermediateMedium risk⏳ Weeks to monthsBest for: Patient traders who prefer simple rules and can tolerate many small losses while waiting for big trends.

How it works

Choose two moving averages, such as a 50-day and a 200-day.
Consider entering long when the fast average crosses above the slow average.
Exit or stay out when the fast average crosses back below the slow average.
Use a stop-loss based on volatility, such as a multiple of ATR, for protection.
Accept frequent small losses in choppy markets in exchange for occasional large trend gains.

The rules

EntryEnter when the fast moving average closes above the slow moving average, ideally with ADX showing trend strength.

ExitExit when the fast average closes below the slow average or a trailing stop is hit.

RiskRisk a small, fixed percentage of your account per trade, such as 1%, and size positions with ATR-based stops.

👍 Pros

Clear, objective rules that are easy to follow.
Can capture large moves during strong trends.
Helps avoid holding through long downtrends.

👎 Cons

Signals lag, so you enter late and exit late.
Choppy, sideways markets produce many false signals.
Long losing streaks can test your discipline.

Worked example

Example: A hypothetical stock's 50-day average crosses above its 200-day average at $100. You buy 50 shares with a stop at $92, risking $400. The trend runs and the averages cross back down at $130, so you exit with a $1,500 gain before costs. Other trades in choppy periods may lose the full $400.

See it on a chart

Demo of the Simple Moving Average on a simulated price path.

Common mistakes

Constantly changing the averages after a few losses.
Ignoring that crossovers fail often in sideways markets.
Trading too large a position for the account.

Tools for this strategy

📐 Position Size Calculator ⚖️ Risk/Reward Ratio Calculator 🧮 Kelly Criterion Calculator

Indicators it uses

〰️ Simple Moving Average 📉 Exponential Moving Average 💪 Average Directional Index 📏 Average True Range

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FAQ

What is a golden cross?

A golden cross is when a shorter moving average, often the 50-day, crosses above a longer one, often the 200-day.

Why do crossovers lag?

Moving averages are built from past prices, so they confirm trends after they have already started.

Should I use SMA or EMA?

EMAs react faster, while SMAs are smoother. Neither is always better, so test both.

Educational only – not financial advice. This page explains ideas and reports the news. It is not a recommendation to buy, sell or hold anything. Markets go up and down and you can lose money. Do your own research and consider talking to a licensed adviser.

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