Renko charts filter out time and minor price fluctuations, plotting only when price moves by a fixed 'brick' size. Each new brick is drawn only when price exceeds the previous brick's close by the defined amount. This noise-reduction approach makes trend identification, support/resistance levels, and reversals much clearer than standard time-based charts.

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{
  "title": {
    "text": "AAPL — Renko (Brick Size $10)"
  },
  "data": [
    {
      "close": 180
    },
    {
      "close": 185
    },
    {
      "close": 182
    },
    {
      "close": 190
    },
    {
      "close": 188
    },
    {
      "close": 195
    },
    {
      "close": 200
    },
    {
      "close": 198
    },
    {
      "close": 205
    },
    {
      "close": 210
    },
    {
      "close": 208
    },
    {
      "close": 215
    },
    {
      "close": 220
    },
    {
      "close": 218
    },
    {
      "close": 225
    },
    {
      "close": 230
    },
    {
      "close": 228
    },
    {
      "close": 222
    },
    {
      "close": 218
    },
    {
      "close": 215
    },
    {
      "close": 220
    },
    {
      "close": 225
    },
    {
      "close": 230
    },
    {
      "close": 235
    }
  ],
  "series": [
    {
      "type": "renko",
      "closeKey": "close",
      "brickSize": 10,
      "upFill": "#10b981",
      "downFill": "#f43f5e"
    }
  ]
}

Edit JSON above · auto-previews after 0.9 s

Fixed $10 brick size on AAPL showing a clear uptrend with the noise of minor daily fluctuations removed.

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