Market Capitalize aggregates market data from established third-party providers and presents it through our own interface and tools. We do not operate an exchange, hold custody of assets, or generate prices ourselves. This page documents each source so you can judge the data for yourself.
Nos sources de données
| Données | Fournisseur | Classe d'actifs |
|---|---|---|
| Prices, market cap, supply, rankings, 24h volume | CoinPaprika | Crypto |
| 7-day price sparklines | Binance | Crypto |
| Crypto Fear & Greed Index | Alternative.me | Crypto |
| Quotes, daily change, 52-week range, volume, charts | Nasdaq | Actions américaines |
Données de cryptomonnaie
Coin prices, market capitalisations, circulating supply, 24-hour trading volume and market rankings are sourced from CoinPaprika. Prices are denominated in US dollars and represent an aggregated market rate rather than the quote on any single exchange, so they may differ slightly from what you see at a specific venue. Market capitalisation is calculated as price multiplied by circulating supply; where a provider reports supply directly we use that figure, and our tools fall back to deriving it from market cap and price when needed.
The small seven-day price charts (sparklines) on coin pages and tables are drawn from recent Binance price history for the corresponding trading pair. They are intended to show the shape of recent movement, not to serve as a precise trading chart.
Données d'actions américaines
Quotes for US-listed equities — last price, daily change, 52-week range, trading volume and the price series behind our charts — are sourced from Nasdaq. Stock data reflects regular trading hours and is delayed; it is not a real-time, tick-by-tick feed and should not be used for time-sensitive order execution. Index exposure on our markets and stocks pages is shown through widely traded ETF proxies (for example, funds tracking the S&P 500, Nasdaq-100, Dow and Russell 2000) rather than the raw index level, and we label them as such.
Fear & Greed Index
The Crypto Fear & Greed Index we display is published by Alternative.me. It compresses several market signals — volatility, momentum, volume, social activity and more — into a single 0–100 reading, where lower values indicate fear and higher values indicate greed. It is a sentiment gauge for the crypto market as a whole, not a buy or sell signal, and not a measure of any individual asset.
Caching & refresh
To stay fast and to respect our providers' rate limits, we cache data for short periods and serve the cached copy between refreshes. Typical intervals are roughly: crypto market lists about once a minute, individual coin quotes about once a minute, the Fear & Greed Index about every ten minutes, stock quotes about every two minutes, and stock charts about once an hour. Because of caching, a figure here can lag the live market by seconds to minutes. Timestamps or "as of" notes indicate freshness where shown.
Lorsque des données manquent
If a provider is unreachable or returns an incomplete response, we would rather show nothing than mislead you. We do not fill gaps with placeholders, zeros, dashes or stale guesses dressed up as live values. A missing row, an unavailable chart, or a tool that reports it cannot fetch a live rate is deliberate — it means we did not have a number we trust at that moment.
Comment nos outils calculent
Our calculators run entirely in your browser using standard financial formulas applied to the inputs you provide. Profit and return tools account for both entry and exit, and for trading fees where you enter them. Compounding, dollar-cost-averaging and inflation tools use standard periodic-growth maths; position-size and risk/reward tools use the distance between your entry and stop. Two tools — the crypto converter and the market-cap calculator — read live coin prices from CoinPaprika at the moment the page loads. Where a calculator asks for an expected return or inflation rate, that number is a hypothetical you choose; we never invent a forecast or imply a guaranteed outcome.
Limites
- Data is provided by third parties and is not guaranteed accurate, complete or timely.
- Prices are aggregated or delayed and will not match every exchange or broker exactly.
- Nothing here is a real-time trading feed or an order-routing system.
- Calculations are illustrative and depend entirely on the assumptions you enter.
- None of it is investment advice. See our disclaimer.
Found a figure that looks wrong? Please tell us through our politique de corrections — we investigate every report.
Questions fréquentes
Les données de marché de ce site sont-elles en temps réel ?
No. To stay fast and respect our providers' rate limits, figures are cached for short periods and can lag the live market by seconds to minutes. The site is for information, not for time-sensitive order execution.
Pourquoi un prix ici diffère-t-il de celui de ma plateforme ou de mon courtier ?
Crypto prices from CoinPaprika are an aggregated market rate rather than the quote on any single venue, and stock data from Nasdaq is delayed. Small differences from a specific exchange or broker are normal.
Que se passe-t-il lorsqu'un fournisseur de données est indisponible ?
We show nothing rather than mislead you. We never fill gaps with placeholders, zeros or stale guesses dressed up as live values — a missing row or chart means we did not have a number we trust at that moment.
Comment signaler un chiffre qui semble erroné ?
Please tell us through our politique de corrections. We investigate every report and fix confirmed errors promptly and transparently.