A live heatmap of S&P 500 stocks, grouped by sector, sized by market cap and colored by today's % change. Updated Oct 30, 2026, 5:13 AM ET.
Across the 516 stocks on the heatmap, the market was down 1.00% weighted by market cap in the latest session, with 413 stocks up and 103 down. 8 of 11 sectors were higher. Healthcare led (+2.61%, best performer LLY +6.63%) and Communication Services lagged (-8.43%, weakest GOOGL -12.64%).
| Sector | Today | 1 week | Up / down | Best | Worst |
|---|---|---|---|---|---|
| Healthcare | +2.61% | +2.89% | 56 / 4 | LLY +6.63% | BAX -7.70% |
| Real Estate | +2.08% | +1.24% | 28 / 2 | KIM +4.36% | EQR -3.50% |
| Consumer Defensive | +1.68% | +0.36% | 29 / 6 | MO +5.15% | BG -4.74% |
| Financial Services | +1.65% | +2.22% | 66 / 5 | ICE +4.54% | IBKR -2.12% |
| Utilities | +1.55% | +1.42% | 30 / 1 | WEC +3.74% | VST -1.24% |
| Basic Materials | +0.84% | +2.57% | 17 / 8 | BLDR +12.85% | ALB -3.81% |
| Industrials | +0.50% | +2.06% | 64 / 12 | HII +13.23% | HONA -9.60% |
| Energy | +0.41% | -0.85% | 14 / 8 | TRGP +2.12% | EQT -2.99% |
| Consumer Cyclical | -0.65% | +2.37% | 47 / 4 | CVNA +15.68% | AMZN -4.25% |
| Technology | -0.90% | +2.54% | 41 / 49 | GEN +15.81% | NOW -26.95% |
| Communication Services | -8.43% | -8.70% | 21 / 4 | PSKY +105.89% | GOOGL -12.64% |
Sector moves are weighted by market cap, the same way box size works on the heatmap. 1 week is the cap-weighted change over the past week.
Stocks worth $50 billion or more move the heatmap most, because they take up the most space.
Every rectangle is one stock. Its size is the company's market capitalization, so giants like Apple, Microsoft and Nvidia fill large areas while smaller members of the index are thin slivers. Its color is the price change for the period you pick: green for gains, red for losses, gray for roughly flat, getting brighter as the move grows. Stocks are grouped by sector, so you can tell at a glance whether a move is a single company's news or a whole industry moving together.
Start with the big picture: is the map mostly green or mostly red, and do the largest boxes agree with the small ones? A rally carried by a handful of mega caps while most stocks fall is narrow; one where nearly every box is green is broad. Then compare sectors to see where money is going, and switch the period to 1 week or 1 month to check whether a sector's move is a one-day blip or a trend. Click a sector to zoom into it, and open any ticker in the tables above for its quote, chart and AI analysis.
A stock market heatmap shows many stocks at once as colored boxes. Each box is one company, boxes are grouped by sector, the size of a box reflects the company's market cap and its color shows how much the stock moved, so you can see the whole market's day in a few seconds.
Green boxes rose and red boxes fell; the brighter the color, the bigger the move, with the scale topping out at about 3% either way for daily performance. Box size is market cap, so the largest companies dominate the map just as they dominate cap-weighted indexes like the S&P 500.
The heatmap covers the stocks in the S&P 500, grouped into 11 sectors: Technology, Financial Services, Healthcare, Consumer Cyclical, Consumer Defensive, Industrials, Communication Services, Energy, Utilities, Real Estate and Basic Materials.
Yes. Switch the color from 1-day performance to 1 week, 1 month, 3 months, 6 months, 1 year or year to date, or to valuation and growth measures such as P/E, forward P/E, dividend yield and EPS growth. Click a sector to zoom into it. The heatmap is free and needs no sign-up.
Compare sectors rather than single stocks. When one sector is broadly green while another is broadly red for several sessions, money is rotating between them. Breadth matters too: a market that is up with most boxes green is healthier than one lifted by a few giant boxes while most stocks fall.