When does a fixed length moving average initiate a buy signal?

A fixed length moving average typically initiates a buy signal when the short moving average crosses the longer moving average from below. This crossover is often interpreted as a bullish signal, indicating that the shorter-term trend is gaining momentum relative to the longer-term trend. The fact that the short moving average cuts the longer moving average from below suggests a potential shift in market dynamics, where recent price action is becoming more favorable compared to past performance.

Holding that position for a specific duration, such as 10 days, emphasizes the need for confirmation of this crossover. By maintaining the bullish position for several days, traders seek to avoid false signals that may result from short-term volatility. Therefore, this strategy lends greater weight to the validity of the crossover, as it indicates consistency in the upward momentum.

This approach leverages momentum and trend-following principles, making it a commonly used technique in technical analysis for determining potential buying opportunities.