The Accelerator Decelerator Oscillator (AC) is one of the most widely used momentum indicators in MetaTrader 5 (MT5). Developed by renowned technical analyst Bill Williams, the AC is a derivative of the Awesome Oscillator (AO). As its name suggests, it measures the acceleration and deceleration of market momentum, often acting as an early warning signal before price changes occur.
How the Indicator Works
The AC Oscillator highlights shifts in driving force before momentum itself changes. This makes it a valuable tool for traders seeking early entry or exit signals.
- Zero Line: The central reference point where acceleration equals market momentum. Crossing the zero line alone does not generate a signal.
- Color Bars: Signals are only considered when the bar colors change.
BUY and SELL Signals
- Red Bars: Indicate decreasing acceleration. Traders are advised to avoid buying or trading during these periods.
- Green Bars: Suggest increasing acceleration. Traders should avoid selling when green bars appear.
On the GBP/USD H4 chart, these signals are clearly visible. The AC Oscillator provides straightforward visual cues, making it easier to interpret market conditions.
Combining with Other Indicators
Like most oscillators, the AC works best when paired with other tools. Many traders combine it with the Alligator Indicator to confirm signals and strengthen trading strategies.
Conclusion
The Accelerator Decelerator Oscillator is an effective tool for spotting early trend changes. By monitoring BUY and SELL signals through bar colors, traders can anticipate market shifts with greater confidence. Best of all, you can download the AC Oscillator indicator for free on our website.
Published:
Apr 09, 2026 09:26 AM
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