**Simple moving-average (SMA) crossover**

**Moving-average crossover** occurs when, on plotting two moving averages each based on different degrees of smoothing, the traces of these moving averages cross

The particular case where simple equally weighted moving-averages are used is sometimes called a **simple moving-average (SMA) crossover**. Such a crossover can be used to signal a change in trend and can be used to trigger a trade in a black box trading system.

There are several types of moving average cross traders use in trading. **Golden cross** occurs when 50 days simple moving average crosses 200 days simple moving average from below.^{[1]} **Death cross** is an opposite situation, when 50 days simple moving average crosses 200 days simple moving average from above.^{[2]} Death cross is not a reliable indicator of future market declines.^{[3]}