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S&P 500 heatmap

The 500 largest US companies, grouped by sector. Green is up, red is down, and each block is sized by how big it is.

Pinch or scroll to zoom in on the small blocks. Tap a name to open its page on our site.

Market data by TradingView. Some quotes may be delayed. Not investment advice.

How to read a heatmap

Size is weight. A big block is a big company, fund or pool. A 3% move on a giant block moves the market; the same move on a small one does not.
Colour is the move, not the price. Dark green and dark red are the extremes of the day.
Grey means flat. A screen of grey with two red blocks is a quiet day with one problem, which is a different story from a screen that is all red.
Look at the sectors, not the names. One bad chip stock is a company story. A whole green or red sector is a market story.

Heatmaps by TradingView. Some quotes may be delayed. Market information, not investment advice.