🗺️ Markets — Sector Heatmap

Tile Size = Market Cap Weight · Colour = CAGR or Health Score · Click to Screen

COMPLETE GUIDE

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Published: April 20, 2026  |  6 min read  |  Platform Guide  |  Markets

Multimedia Learning Hub

Read any sector's performance and weight at a glance — then drill straight into its stocks

What You Will Master

The Sector Heatmap turns the entire NSE into a single visual — each sector as a coloured rectangle, sized by market cap weight and coloured by performance. In under 10 seconds you can see which sectors are leading, which are lagging, and which ones deserve a closer look in the Screener.

What This Guide Covers:

  1. How tile size is computed — market cap weight, square-root scaling, 120–320px range
  2. How tile colour works — the four metric toggles and their colour scales
  3. Reading 1Y vs 3Y vs 5Y — momentum vs structural vs long-term strength
  4. The Avg Health Score metric — what it measures and when to use it
  5. Sector Summary Table — columns, sorting, and when the table beats the heatmap
  6. Clicking through to the Screener — the top-down workflow
What does tile SIZE represent on the heatmap?
Tile width is proportional to the square root of that sector's market capitalisation as a fraction of the total NSE market cap. Larger tiles = sectors with greater total market value. The square-root scaling prevents the largest sectors (Financial Services, IT) from completely dominating the visual — smaller sectors are still readable.
What does tile COLOUR represent?
Colour represents the selected metric from the toggle above the heatmap. On CAGR metrics: dark green = strong positive return (≥25%), lighter green = moderate (5–25%), dark red = significant negative return. On Health Score: dark green = high score (≥7/10), red = low score (<3/10). The text on each tile shows the exact value.
When should you use the 5Y CAGR toggle instead of 1Y?
Use 5Y to find structural long-term winners — sectors where the underlying business fundamentals have driven sustained outperformance across multiple market cycles. Use 1Y for recent momentum — what's working right now. A sector green on 5Y but red on 1Y is a potential correction within a strong trend. A sector green on 1Y but flat on 5Y may be a short-term rally without durable foundations.
What is the Avg Health Score and how is it calculated?
The Avg Health Score is the average of Finmagine's fundamental health scores (out of 10) across all companies in that sector. The health score is derived from multiple financial ratios — profitability, debt levels, earnings quality, and capital efficiency. A sector with Avg Health Score ≥ 7 has a preponderance of fundamentally strong companies. Use this metric to find sectors worth investing in for quality, not just momentum.
What does clicking a sector tile do?
Clicking any sector tile opens the Screener pre-filtered for that sector. You land directly on a list of all companies in that sector, ready to apply additional filters (ROCE, PE, D/E, etc.) to find the best individual stocks. This is the core top-down workflow: Heatmap identifies the sector → Screener finds the stock.
What is the default sort order in the Sector Summary Table?
The default sort is Market Cap descending — the largest sectors by total market value appear first. Click any column header to sort by that metric. Clicking the same header again reverses the sort direction. Sorting by 3Y CAGR descending is one of the most useful views — it identifies sectors with sustained multi-year outperformance.
Why do some sectors appear much smaller than their actual economic importance?
Tile size reflects NSE listed market cap, not the sector's contribution to GDP or the broader economy. Sectors like Agriculture, Chemicals, and Textiles have many unlisted companies — so their NSE market cap understates their real economic size. The heatmap shows investable market size, not economic size.

The Two Visual Encodings: Size and Colour

Every sector tile encodes exactly two pieces of information: size (market cap weight) and colour (performance metric). Reading both together gives you the full picture in seconds.

Financial Services
+31.4%
₹42.1L Cr · 58 cos
Information Technology
+18.7%
₹28.4L Cr · 41 cos
Consumer Goods
+8.2%
₹16.8L Cr · 72 cos
Pharma
−4.1%
₹12.3L Cr · 44 cos
Realty
−14.8%
₹4.1L Cr · 21 cos

Above: illustrative example. Financial Services is the widest tile — largest NSE market cap. Realty is narrow — smaller listed universe.

Tile Size — Market Cap Weight

Width ranges from 120px (minimum) to 320px (maximum), scaled to the square root of the sector's market cap fraction. The square-root scaling is intentional — it prevents the two largest sectors (Financial Services and IT) from dominating the entire visual. Without it, everything else would be too small to read.

Each tile also shows the sector's total market cap and company count directly — so even without comparing sizes, you can read the exact numbers.

Tile Colour — The Selected Metric

The colour scale for CAGR metrics:

≥ 25%
Dark green
15–25%
Green
5–15%
Muted green
0–5%
Dark muted
−10–0%
Dark red
≤ −10%
Deep red
The colour is relative to zero, not to other sectors. Two green tiles can have very different CAGRs — one at +8% and one at +28%. The colour tells you positive vs negative, and the intensity gives rough magnitude. For precise comparison, use the number printed on the tile or the Summary Table below.

The Four Metric Toggles

1Y Price CAGR
3Y Price CAGR
5Y Price CAGR
Avg Health Score

1Y Price CAGR (Default)

The annualised price return of the sector over the past 12 months. This is the most volatile metric — it reflects current market sentiment, recent earnings surprises, and sector-specific news. Use 1Y to identify what is working right now and what is in a short-term correction.

3Y Price CAGR

Annualised price return over 3 years. This timeframe filters out most noise and reflects medium-term structural trends — sector earnings cycles, capacity expansions, regulatory changes. A sector that has compounded at 20%+ over 3 years has broad participation from multiple companies, not just one or two outliers.

5Y Price CAGR

Annualised return over 5 years. This is the most reliable metric for identifying structural long-term winners — sectors where durable competitive advantages, favourable policies, or demographic tailwinds have driven sustained outperformance across at least one full bull-bear cycle.

The 1Y vs 5Y divergence signal: A sector that is green on 5Y but red on 1Y has strong fundamentals but is in a current-year correction. This pattern is worth examining in the Screener — quality stocks may be available at better valuations than their long-run record would normally allow. Conversely, a sector green on 1Y but flat on 5Y is experiencing a recent re-rating that may not persist.

Avg Health Score

The average of Finmagine's fundamental health score (0–10) across all companies in the sector. The health score is built from financial ratios including ROCE, ROE, debt levels, profit consistency, and earnings quality. Use this metric to find sectors with a high density of fundamentally sound businesses — useful when you want to invest for quality rather than chasing recent momentum.

The health score colour scale: dark green = ≥7/10, muted green = 5–7, dark red = <3. A sector scoring 7+ has most of its companies meeting strong fundamental criteria. A sector scoring below 3 is dominated by loss-making or heavily indebted businesses.

Combining metrics: The most powerful approach is to first identify sectors with strong 3Y/5Y CAGR, then switch to Health Score to confirm that the outperformance is backed by fundamental quality. A sector with high CAGR and high Health Score is a structural winner with business backing. High CAGR but low Health Score may be a speculative rally in fundamentally weak companies — treat with caution.

📊 Sector Summary Table

Below the tile heatmap, every sector appears as a row in a sortable table. The table exposes all four metrics at once — useful when you want to rank sectors precisely rather than visually scanning tiles.

Sector ↕ # Cos ↕ Market Cap ↕ 1Y CAGR ↕ 3Y CAGR ↕ 5Y CAGR ↕ Health ↕
Financial Services 58 ₹42.1L Cr +31.4% +22.8% +18.1% 7.2/10
IT 41 ₹28.4L Cr +18.7% +14.2% +20.4% 8.1/10
Metal & Mining 28 ₹8.2L Cr +42.1% +9.4% +11.8% 5.4/10
Pharma 44 ₹12.3L Cr −4.1% +16.3% +14.9% 6.8/10
Realty 21 ₹4.1L Cr −14.8% +28.6% +8.2% 4.1/10

Illustrative data. Click any column header (↕) to sort. Default: Market Cap descending.

Key Sorting Strategies

Table vs heatmap: The heatmap is faster for a broad visual scan — glance at colour and size, identify outliers. The table is better for precise ranking — when you want to know whether Pharma's 3Y CAGR is higher than Auto's, or which sector has the best Health Score. Use both: heatmap first to orient, table to confirm.

Clicking Through to the Screener

Every sector tile is a link. Clicking it opens the Screener pre-filtered for that sector — you land directly on a list of all companies in that sector with Finmagine's full fundamental data. From there:

  1. Apply quality filters — ROCE > 15%, D/E < 0.5, Revenue Growth > 12%
  2. Sort by Score — Finmagine's composite score ranks by overall fundamental health
  3. Open individual stocks — click any company row to go to the full stock page
The top-down workflow: Heatmap → identify strong sector (e.g. IT on 3Y CAGR) → Screener → filter for quality within IT (ROCE > 20%, D/E = 0, consistent profit growth) → Stock page → full fundamental + technical analysis + AI Advisor. This three-step flow takes under 5 minutes and is more systematic than stock-picking from news or tips.

Sector Rotation Signals

The heatmap is most powerful when you compare the 1Y toggle against the 3Y toggle for the same session. Sectors where the colour changes significantly between time periods are undergoing rotation:

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