Heikin-Ashi (Japanese for 'average bar') charts use a modified OHLC calculation where each bar's values are derived from averages of the current and prior bars. This smoothing technique filters out short-term noise, making trends and reversals more visually apparent. They are widely used in technical analysis alongside standard candlestick charts.

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date	open	high	low	close
2024-01-02	148.5	151.2	147.8	150.4
2024-01-03	150.4	153.6	149.9	152.8
2024-01-04	152.8	155.1	151.5	154.3
2024-01-05	154.3	154.8	150.2	151.6
2024-01-08	151.6	152.4	148.7	149.5
2024-01-09	149.5	150.1	146.3	147.2
2024-01-10	147.2	149.5	146.8	148.9
2024-01-11	148.9	152.3	148.4	151.7
2024-01-12	151.7	154.6	151.1	153.9
2024-01-15	153.9	156.8	153.2	155.6

{
  "data": [
    {
      "date": "2024-01-02",
      "open": 148.5,
      "high": 151.2,
      "low": 147.8,
      "close": 150.4
    },
    {
      "date": "2024-01-03",
      "open": 150.4,
      "high": 153.6,
      "low": 149.9,
      "close": 152.8
    },
    {
      "date": "2024-01-04",
      "open": 152.8,
      "high": 155.1,
      "low": 151.5,
      "close": 154.3
    },
    {
      "date": "2024-01-05",
      "open": 154.3,
      "high": 154.8,
      "low": 150.2,
      "close": 151.6
    },
    {
      "date": "2024-01-08",
      "open": 151.6,
      "high": 152.4,
      "low": 148.7,
      "close": 149.5
    },
    {
      "date": "2024-01-09",
      "open": 149.5,
      "high": 150.1,
      "low": 146.3,
      "close": 147.2
    },
    {
      "date": "2024-01-10",
      "open": 147.2,
      "high": 149.5,
      "low": 146.8,
      "close": 148.9
    },
    {
      "date": "2024-01-11",
      "open": 148.9,
      "high": 152.3,
      "low": 148.4,
      "close": 151.7
    },
    {
      "date": "2024-01-12",
      "open": 151.7,
      "high": 154.6,
      "low": 151.1,
      "close": 153.9
    },
    {
      "date": "2024-01-15",
      "open": 153.9,
      "high": 156.8,
      "low": 153.2,
      "close": 155.6
    },
    {
      "date": "2024-01-16",
      "open": 155.6,
      "high": 158.2,
      "low": 154.8,
      "close": 157.4
    },
    {
      "date": "2024-01-17",
      "open": 157.4,
      "high": 159.5,
      "low": 156.9,
      "close": 158.8
    }
  ],
  "series": [
    {
      "type": "heikinashi",
      "xKey": "date",
      "openKey": "open",
      "highKey": "high",
      "lowKey": "low",
      "closeKey": "close"
    }
  ],
  "title": {
    "text": "AAPL Heikin-Ashi (Jan 2024)"
  }
}

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Heikin-Ashi candles use averaged OHLC values to smooth price action, making trends easier to identify. Bullish candles are filled, bearish candles are hollow or a contrasting color.

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