Market Heatmap — Crypto & Stock Market Heatmaps
A heatmap turns a whole market into one picture: every asset is a rectangle sized by how big it is and coloured by how it moved. Thirty seconds tells you what a table of five hundred rows would not — whether today is broad or narrow, which sectors carry it, and where the money actually sits.
Two maps below. The crypto heatmap is built from our own market data; the stock heatmap covers the S&P 500 and other major indices.
Crypto heatmap
The 50 largest cryptocurrencies, coloured by price change over 1 hour, 24 hours or 7 days. Every tile links to that coin’s page.
The map comes in two parts, and the reason is worth knowing. In the treemap, area is market capitalization — which is why Bitcoin’s tile is over half of it. That concentration is the single most important fact about this market, so we would rather show it than flatten it. But it also means coins ranked below the top twenty would be unreadable slivers, so they appear underneath at equal size, where only colour carries the data.
Ranks 21–50, at equal size
Crypto sectors today
The same market cut by sector, which is often where the real story is: a flat total market cap can hide a 12% move in one corner of it.
Sector market caps overlap where a coin belongs to more than one sector, and umbrella groupings such as "Smart Contract Platform" are excluded so the list stays readable. Change is the 24-hour move in each sector's total market cap. Data by CoinGecko.
Stock market heatmap
US equities grouped by sector, sized by market cap and coloured by daily change. Use the selector inside the map to switch index — S&P 500, Nasdaq 100 and others.
How to read a heatmap
Three things carry all the information:
- Size is weight, not performance. Bitcoin’s tile stays enormous on a day it barely moves, because market cap is what the area encodes. A tiny tile turning bright green is a small coin having a big day — not a big event.
- Colour is the move. Deep green and deep red mark the extremes; grey means the asset is effectively flat. Because colour intensity is banded rather than continuous, two tiles of the same shade are in the same range, not identical.
- Pattern is the point. A map that is uniformly one colour means the whole market moved together — usually a macro or liquidity event. A patchwork means the move is asset-specific, and the reasons are individual.
The most common misreading is treating a sea of red as equally bad everywhere. Check the largest tiles first: if the majors are pale and only small caps are deeply red, capital is rotating out of risk, not leaving the market.
Why crypto and stock heatmaps behave differently
Put the two maps side by side on a volatile day and the contrast is stark.
Crypto is far more correlated. When Bitcoin moves hard, most of the crypto map moves with it — the whole asset class still trades largely as one risk position. The S&P 500 map fragments much more readily, because energy, utilities and technology respond to genuinely different things.
Crypto is more concentrated. Bitcoin and Ethereum alone are a large share of total crypto market cap, so the crypto map is dominated by two tiles. The S&P 500 has heavy concentration in big technology too, but spread across more names.
The clocks differ. Crypto trades continuously, so its heatmap keeps moving through nights and weekends. The stock heatmap freezes at the closing bell and gaps at the next open — a stock map on Sunday shows Friday.
Different ranges are normal. A 5% daily move is a notable day for a large-cap stock and an ordinary one for a mid-cap token. Read each map against its own market’s normal, not against the other’s.
Frequently asked questions
How often does the crypto heatmap update?
Prices come from CoinGecko and are cached for a couple of minutes, so a reload gives you a near-live picture. The map is drawn by our server, which is why it appears immediately and works with JavaScript disabled.
Why is the stock heatmap an embed instead of your own chart?
Honesty about sourcing: there is no free stock-market data feed that permits commercial use. Every provider either caps the free tier far below what a 500-stock map needs or restricts it to personal projects. Rather than scrape a feed we have no licence for, we use TradingView’s official free widget for equities. Note that this part loads from TradingView’s servers, so your browser contacts them directly when you scroll to it.
What does tile size mean, exactly?
Market capitalization — price multiplied by circulating supply — for crypto, and market cap for stocks. Areas are proportional, so a tile with four times the area represents roughly four times the market cap. See market cap in our glossary for why that measure has limits.
Can I use the heatmap to pick trades?
It is a situational-awareness tool, not a signal. A heatmap tells you what has already happened and where attention currently is; it says nothing about what happens next. Nothing on this page is financial advice.
Why do some sector market caps look like they overlap?
Because they do. A coin can belong to several sectors at once, so sector totals are not mutually exclusive and will not sum to the total market cap. We exclude the broadest umbrella groupings for that reason, but overlap remains — treat sector figures as relative strength, not a partition of the market.