An ETF heatmap is a visual tool that shows the performance of exchange-traded funds (ETFs) across various sectors, asset classes, or regions. Using colour coding—green for gains and red for losses—it provides a quick snapshot of market trends and ETF movements. The intensity of the colours often reflects the magnitude of performance changes. ETF heatmaps help investors identify strong or weak sectors, analyse market sentiment, and make informed decisions about portfolio diversification and allocation, offering a comprehensive view of ETF market dynamics at a glance.