Data & methodology

Where the figures come from

FinTk does not produce market data. It reads it from the sources below and shows it as published. “How old” is the longest a stored copy is used before it is read again.

What each figure means

Price, market cap, volume and supply

Shown as CoinMarketCap reports them, in US dollars. FinTk does not adjust, smooth or estimate them.

Change over 24 hours, 7, 30 and 90 days (and 1 hour on a coin page)

The change CoinMarketCap reports from the price at the start of the period to the price now. The bars start from a zero line and are drawn from these figures. There is no price history between the dates, so none is drawn.

Year to date and past year

Worked out by FinTk from two prices: the price on 1 January (or about a year ago) and the price now, as (now − then) ÷ then × 100, rounded to two decimals. “About a year” is 358 days, the furthest back the free data plan allows safely. The dates used are printed in the table headings.

Market make-up

Bitcoin's and Ethereum's shares of the total market value are CoinMarketCap's. “All other coins” is 100 minus those two. The stablecoin and DeFi groups are counted among the coins above, so they overlap the rows beside them and must not be added to them.

Largest gain and decline

Of the 25 coins on the markets page, the one with the highest and the one with the lowest reported 24-hour change. It is a ranking of one day's move among large coins, not a recommendation.

Fear and Greed

A score and label calculated by CoinMarketCap. FinTk shows them unchanged. How the score is built is explained in CoinMarketCap's own methodology.

Your portfolio

Value is the amount you entered times the current price. Paid is the total you entered, and gain or loss is value minus paid. FinTk cannot check what you entered. A holding with no amount paid has no gain or loss.

For how CoinMarketCap builds its own figures, read CoinMarketCap's methodology (opens in a new tab).

How news is chosen

Coverage and limits

• Not live

  Prices can be up to about 10 minutes old. If a refresh fails, an older copy is shown for up to an hour, and the “updated” time on the page tells you how old it is. After that the page says the data is unavailable.

• Largest coins only

  FinTk reads the 200 largest coins by market capitalization. The markets page lists 25 of them. Coin pages and search cover the 200. A smaller coin will not be found.

• No price history

  Only the change over each period is shown. There are no charts of daily prices, because the data plan does not include them.

• Missing means missing

  If a figure is not available, the page says so. It is never replaced with an estimate or an old value.

• US dollars only

  All prices and values are in US dollars.

• Temporary storage

  Market data is kept only briefly in memory to avoid asking the provider again. It is not archived. What you save, your holdings and watchlist, is stored with your account until you delete it.

• Information, not advice

  FinTk is for personal, non-commercial research. Nothing on it is investment advice, and data can be delayed, incomplete or briefly unavailable.

Credits

Market data is provided by CoinMarketCap.com (opens in a new tab). Announcements and filings are published by the SEC, the CFTC and the U.S. Department of Justice. FinTk is an independent project and is not affiliated with or endorsed by any of them.