Heikin Ashi

A smoothed candlestick chart that averages price to make trends and pauses easier to see.

What it is

Heikin Ashi (Japanese for "average bar") is an alternative way of drawing candles. Instead of plotting raw open, high, low, and close, each candle is built from averaged values that blend the current bar with the prior Heikin Ashi candle. The result is a chart that filters out some of the bar-to-bar noise of standard candlesticks, so stretches of one-directional movement and periods of indecision tend to stand out more clearly. It is a charting and visualization technique, not a buy/sell signal generator, and it does not predict future prices. Trading carries risk of loss.

How it works

Heikin Ashi candles are calculated from the regular OHLC of each bar using a recursive formula. The HA close is the average of the current bar's open, high, low, and close: (open + high + low + close) / 4. The HA open is the average of the previous HA open and previous HA close: (HA_open[1] + HA_close[1]) / 2 — for the very first bar it is typically seeded from the regular open and close, since there is no prior HA candle to reference. The HA high is the maximum of the current high, the HA open, and the HA close; the HA low is the minimum of the current low, the HA open, and the HA close. Because each candle's open depends on the prior HA candle, values are smoothed across bars rather than each candle standing alone. Note this also means the open and close you see are averaged figures, not the actual traded open and close for that period.

How traders read it

• A run of same-colored candles (e.g. several consecutive up-colored bars) is often read as a smoother depiction of a sustained move, but a color streak describes past bars and is not a forecast.
• Candles with little or no lower wick during an up-colored run, or little or no upper wick during a down-colored run, are commonly interpreted as bars where movement stayed one-directional within the period.
• Small candle bodies with wicks on both sides (sometimes called doji-like HA candles) are often read by traders as indecision or a possible pause, not as a confirmed reversal.
• A change in candle color, or the appearance of wicks on the opposite side, is sometimes used to flag that conditions may be shifting — traders typically look for confirmation from other tools rather than treating it as a signal to act on.
• Because HA open and close are averaged, the prices shown will differ from the real OHLC; read levels against a standard candlestick chart when exact prices matter.

Common settings

Heikin Ashi has no traditional input parameters — it is a fixed transformation of OHLC. In most platforms you simply switch the chart type to Heikin Ashi, or plot it from a script. The main choices are cosmetic (up/down colors, wick colors) and which timeframe the candles are built on.

Strengths

• Makes sustained one-directional moves and quiet, choppy periods easier to distinguish at a glance.
• Filters some of the single-bar noise that can clutter a standard candlestick chart.
• Simple, parameter-free transformation that behaves consistently across symbols and timeframes.

Pitfalls to watch

• The plotted open and close are averaged values, not actual traded prices, so HA candles can show a different open/close (and even a different color) than the underlying standard candles for the same bar.
• The averaging introduces lag: trend changes appear later than on a standard candlestick chart, which can make color flips read late.
• Apparent smoothness can encourage overstaying a move — a long color streak says nothing about how much longer it will continue.
• Order placement, stops, and gaps should be referenced to real prices; using HA-displayed levels for exact execution can be misleading.
• Heikin Ashi is descriptive, not predictive — color changes and wick patterns are not signals and do not imply any win rate or future outcome.

Pine v6 example

//@version=6
indicator("Heikin Ashi (overlay)", overlay = true)

// Request Heikin Ashi OHLC for the chart's own symbol/timeframe.
// Note: request.security on intrabar/lower timeframes can repaint;
// use barmerge args or confirmed bars if that matters for your study.
haTicker = ticker.heikinashi(syminfo.tickerid)
haOpen  = request.security(haTicker, timeframe.period, open)
haHigh  = request.security(haTicker, timeframe.period, high)
haLow   = request.security(haTicker, timeframe.period, low)
haClose = request.security(haTicker, timeframe.period, close)

upBar = haClose >= haOpen
plotcandle(haOpen, haHigh, haLow, haClose, title = "HA",
     color = upBar ? color.teal : color.red,
     wickcolor = color.gray, bordercolor = na)

// Educational only. Not a signal or recommendation. Trading carries risk of loss.

Pro tip: Keep a standard candlestick chart alongside Heikin Ashi: use HA to gauge the overall character of a move, but read actual prices, gaps, and levels from the real candles so you are never relying on averaged figures for exact decisions.

Educational only — not financial advice, not a recommendation to trade. No indicator is predictive; trading involves substantial risk of loss.