Definition
MACD (Moving Average Convergence Divergence) is a trend indicator that shows the relationship between two moving averages of price. It consists of the MACD line, signal line, and a histogram that visualizes momentum.
Simple Explanation (Analogy)
MACD is like a GPS navigation system. The MACD line is your car's current position, and the signal line is the suggested route. When your car overtakes the route (MACD crosses above signal), you're accelerating — bullish momentum. When your car falls behind (MACD crosses below signal), you're slowing down — time to be cautious. The histogram? That's the speedometer showing how fast you're moving.
Indonesian Stock Example
When BBCA experienced an uptrend in early 2024, its MACD showed a golden cross (MACD line crossing above the signal line) and the histogram kept growing. Traders who spotted this signal could ride the rally before it continued. Conversely, when GOTO showed a death cross on its MACD, the stock price continued weakening for weeks.
How to Use
- Add the MACD indicator to your chart (standard settings: 12, 26, 9). Watch the two lines and histogram below the price chart.
- Look for buy signals when the MACD line crosses above the signal line (golden cross), especially if it happens below the zero line. Sell signals occur when MACD crosses below the signal (death cross).
- Watch for divergence: if price makes a higher high but MACD makes a lower high, the trend may be weakening — prepare for a possible reversal.
Common Mistakes
- Buying/selling immediately on a crossover without confirmation. MACD often gives false signals in sideways markets, so make sure there's a clear trend.
- Ignoring the histogram. A shrinking histogram can be an early warning that momentum is fading, even before a crossover happens.
- Using MACD on very small timeframes (e.g. 1 minute). On small timeframes, there's too much noise and signals become unreliable.
Tool CTA
After understanding this concept, apply it in tools so decisions become more objective and measurable.
Open MACDFAQ
What's the difference between MACD and RSI?
RSI focuses on whether the price is overbought/oversold (current condition), while MACD focuses on trend direction and momentum. RSI is like a thermometer, MACD is like a GPS. Ideally, use both for a more complete picture.
Why does MACD use 12, 26, 9?
12 and 26 are the EMA (Exponential Moving Average) periods whose difference forms the MACD line. 9 is the EMA period of the MACD line itself, which becomes the signal line. These are industry-standard settings that work well in most market conditions.