What is MACD (Moving Average Convergence Divergence)?
Definition
MACD is a trend-following momentum indicator that shows the relationship between two exponential moving averages of price. It generates signals through crossovers of the MACD line and signal line, zero-line crossovers, and divergences with price.
Detailed Explanation
MACD consists of three components: the MACD line (12-period EMA minus 26-period EMA), the signal line (9-period EMA of the MACD line), and the histogram (MACD line minus signal line). When the MACD line crosses above the signal line, it generates a bullish signal; crossing below generates a bearish signal.
The MACD histogram is particularly useful for identifying momentum shifts. When the histogram is positive and growing, bullish momentum is accelerating. When it is positive but shrinking, the uptrend may be losing steam. This histogram divergence often precedes the actual MACD crossover, giving traders an earlier warning.
MACD works best in trending markets and can generate many false signals during sideways, range-bound periods. Traders often combine MACD with RSI or other indicators to filter signals. A MACD buy signal confirmed by RSI rising from oversold territory is more reliable than either signal alone.
Zero-line crossovers are significant: when the MACD line crosses above zero, the 12-period EMA has moved above the 26-period EMA, confirming a bullish trend change. This is a stronger signal than a mere signal-line crossover and often marks the beginning of significant price moves.
Formula
MACD Line = 12-period EMA - 26-period EMA; Signal Line = 9-period EMA of MACD Line; Histogram = MACD Line - Signal LineExample
If a stock's 12-day EMA is $155 and 26-day EMA is $150, the MACD line is +5. If the signal line is +3, the histogram is +2. The positive and rising histogram indicates strengthening bullish momentum.
Frequently Asked Questions
What are the best MACD settings?
How reliable is MACD for trading signals?
Related Terms
Moving Average
A moving average is a technical indicator that smooths price data by calculating the average price over a specific number of periods. It helps identify trends, support and resistance levels, and potential buy or sell signals by filtering out short-term price noise.
Relative Strength Index (RSI)
The Relative Strength Index (RSI) is a momentum oscillator that measures the speed and magnitude of recent price changes on a scale of 0 to 100. Readings above 70 typically indicate overbought conditions, while readings below 30 suggest oversold conditions.
Golden Cross
A golden cross occurs when a short-term moving average (typically the 50-day SMA) crosses above a long-term moving average (typically the 200-day SMA). It is widely regarded as a bullish technical signal indicating potential for sustained upward price movement.
Death Cross
A death cross occurs when the 50-day simple moving average crosses below the 200-day simple moving average. It is considered a bearish technical signal suggesting potential for continued downward price movement and has preceded several major market declines.
See It in Action
Disclaimer: The information on this page is provided for educational and informational purposes only and does not constitute investment advice. AI-generated analysis may contain errors or inaccuracies. Always conduct your own research and consult a qualified financial advisor before making investment decisions.
See MACD (Moving Average Convergence Divergence) in Action
StoxPulse AI automatically tracks and analyzes key financial metrics from earnings calls and SEC filings for your watchlist.