Forex glossary

Heikin-Ashi Candles

Heikin-Ashi candles use current OHLC and previous Heikin-Ashi values. The close averages current O, H, L and C; the open averages the prior HA open and close. They smooth the price display, but their synthetic levels may differ from prices available for order execution.

Illustrative example

How does it work in practice?

Assume actual prices are O = 100, H = 106, L = 98 and C = 104. The Heikin-Ashi close is 102; that synthetic value need not be available for execution at the real candle close.

A case to work through

Two closing values

Hypothetically, O=200, H=212, L=196 and C=208; an order is assessed after the bar ends.

  1. HA close=(200+212+196+208)/4=204.
  2. The actual close is 208; synthetic 204 does not confirm an available fill.

What follows? Store the chart condition separately from the execution price.

Example boundary: Bid/ask quotes and execution assumptions may also differ from the standard close.

Chart versus execution

Chart versus executionA synthetic value does not prove an available fill.1Actual OHLCPrice data supplies the transformation inputs.2Synthetic HACalculated candles smooth the display.3Order priceCheck actual quotes and the execution model.
A synthetic value does not prove an available fill.
Text description of the diagram
  1. Actual OHLC: Price data supplies the transformation inputs.
  2. Synthetic HA: Calculated candles smooth the display.
  3. Order price: Check actual quotes and the execution model.

A useful distinction

Heikin-Ashi Candles / Renko Charts

Heikin-Ashi transforms each period's OHLC; Renko builds bricks from price movement and a chosen size.

Check your understanding

Calculate HA close and identify appropriate execution data.

Hypothetically, O=40, H=46, L=38 and C=44. What is HA close?

Show the answer and explanation

42

(40+46+38+44)/4=42.

Volatility and transformed data

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Sources and documentation

The example illustrates the mechanism. Check current account conditions and instrument specifications with the provider.

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