Envelopes – a technical indicator widely used by Forex traders – forms a price channel built from two moving averages (MA). One MA is shifted upward, the other downward. The magnitude of this offset for the Envelopes channel boundaries depends on the instrument’s activity or volatility: higher volatility requires a larger offset.
Envelopes Trading Signals
Trading signals from the Forex Envelopes indicator are typically reversal-based, triggered when price approaches the channel boundaries. A buy signal occurs when price nears the lower band; a sell signal appears when price approaches the upper band.
Note that this reversal strategy works best on lower timeframes — below M15. On higher timeframes, breakout signals are more common.
The logic behind trading reversals off the Envelopes channel is straightforward: under pressure from strong buying or selling volume, prices reach short-term extremes (minima or maxima), then stabilize or reverse direction. This behavior mirrors that of the Bollinger Bands (BB) indicator.
Envelopes Calculation Formula
Upper Band = SMA(CLOSE, N) × [1 + K/1000]
Lower Band = SMA(CLOSE, N) × [1 − K/1000]
where:
- SMA — Simple Moving Average;
- N — averaging period for the moving averages;
- K/1000 — deviation from the mean (expressed in tenths of a percent).
FAQ
What does the Envelopes indicator measure?
It measures price deviation from a moving average using upper and lower bands, helping identify potential reversal zones.
How do I set up Envelopes in MetaTrader 4?
It’s built-in: Insert → Indicators → Trend → Envelopes. Adjust period (N) and deviation (K) based on volatility and timeframe.
Is Envelopes better for trend or range markets?
Best suited for ranging or low-volatility markets; in strong trends, it often generates premature reversal signals.
