Market Heat Map
Visual overview of stock performance across major sectors. Rectangle size reflects market capitalization. Colors range from deep red (losses) to deep green (gains).
Frequently Asked Questions
How do you read a stock market heat map?
Each rectangle represents a stock, with its size proportional to market capitalization. Larger companies take up more space. The color indicates daily performance: green means the stock is up, red means it is down, and gray means minimal change. Stocks are grouped by sector so you can quickly spot industry-wide trends.
What do the colors on the heat map mean?
Deep green indicates strong gains (up to +3% or more), deep red indicates significant losses (down to -3% or more), and gray represents minimal change near 0%. The intensity of the color reflects the magnitude of the price movement, making it easy to identify the biggest movers at a glance.
How often is the heat map data updated?
The heat map data is fetched from live market sources and can be refreshed on demand using the Refresh button. During market hours, prices update in near real-time. After market close, the heat map reflects final closing prices for the trading day.
What stocks are included in the heat map?
The heat map includes major publicly traded companies across five key sectors: Technology, Finance, Healthcare, Energy, and Consumer. The stocks shown are among the most widely held and actively traded names in each sector, providing a representative view of overall market health.
How can I use a heat map for trading decisions?
Heat maps help you quickly identify sector rotation, market breadth, and concentrated moves. If most sectors are green but one is red, it may signal sector-specific headwinds. Broad green suggests strong market sentiment. Use the heat map as a visual screening tool alongside fundamental and technical analysis, not as a standalone trading signal.
How to Read the Market Heat Map
A market heat map provides a visual snapshot of stock performance across different sectors of the economy. Each rectangle represents an individual stock, with its size proportional to the company's market capitalization — larger companies occupy more space. The color indicates daily performance: deep green signals strong gains, deep red signals significant losses, and gray represents minimal change.
Heat maps help investors quickly identify sector rotation, market breadth, and whether gains or losses are concentrated in specific areas. When most tiles are green, it suggests broad market strength. When one sector is red while others are green, it may signal sector-specific headwinds. Use this tool alongside other indicators to make more informed investment decisions.