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Market Treemap (Financial Sector Heatmap)

Financial market map treemap displaying company market capitalization weights and daily price action performance gradients.

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#treemap#market-cap#heatmap#financial#stock#sectors
Customization Guides & Code Snippets

◆Proportional Market Capitalization Tiling

Group assets into responsive grid sectors with flex and minmax weighting so Mega-Cap stocks (e.g. NVDA, AAPL) command visual hierarchy over mid-cap peers.

◆Dynamic Price Performance Color Buckets

Assign green shades for positive returns and crimson shades for negative session drops to replicate professional Finviz and Bloomberg terminals.

const getHeatmapColor = (chg: number) => {
  if (chg >= 3.0) return '#00e5a0';
  if (chg >= 0) return 'rgba(0, 229, 160, 0.45)';
  return '#ff6b6b';
};
When to use a Market Treemap (Financial Sector Heatmap)

A Market Treemap (Financial Sector Heatmap) is ideal for developers and designers who need to display data clearly and effectively. Use this chart type when:

  • ✓Building analytics overview pages with multiple metrics
  • ✓SaaS product dashboards showing user activity
  • ✓Business intelligence reporting screens
  • ✓Admin panels with KPI summaries
Tips for Recharts Market Treemap (Financial Sector Heatmap)
TIP 1Use a grid layout with consistent card sizes for visual rhythm
TIP 2Always show a time period selector (Today / 7d / 30d / 90d)
TIP 3Load charts progressively — KPI cards first, then charts
TIP 4Use skeleton loaders while data is fetching to prevent layout shift
TIP 5Keep color usage minimal — pick 2-3 accent colors maximum
Key Recharts Props
PROPTYPEDESCRIPTION
dataarrayArray of objects with your data values
dataKeystringThe key in your data objects to use for bar height
fillstringBar color — accepts hex, rgb, or CSS variable
radius[number,number,number,number]Corner radius [topLeft, topRight, bottomRight, bottomLeft]
stackIdstringGroup bars with the same stackId into a stacked bar
Frequently Asked Questions

What is a market map treemap (stock market treemap react)?

A market map treemap visualizes financial market sectors (like the S&P 500 or NASDAQ) where rectangle sizes reflect company market capitalization and tile colors indicate daily price performance (green for gains, red for losses).

How do you build a responsive stock heatmap treemap in React?

Use CSS Grid with auto-fit and minmax weighting combined with proportional flex sizing. Color each tile dynamically based on the percentage change value (+3% deep green, -3% deep crimson) with interactive hover tooltips.

What is the difference between a standard treemap and a market treemap?

A standard treemap uses monochromatic or categorical colors to show nested proportions. A market treemap adds a two-dimensional quantitative layer: rectangle area represents size/weight, while diverging color represents performance direction.

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