According to numerous reports and reviews, this question can be best answered as both yes, and no.
Yes, it is accurate in a sense because CoinMarketCap is the world's most-referenced price-tracking website for cryptoassets, and is used by tens of millions of people to great effect.
However, it is also well-known for being notoriously inaccurate. Because CoinMarketCap does not yet have an effective mechanism to flag and root out dubious exchanges and fake volume that is occurring on the site, many retail investors of CoinMarketCap have been burned by inaccuracies that were listed and were not properly vetted by CoinMarketCap.
It is now recommended by most experts in the crypto space that all potential investors should view CoinMarketCap's data with care and always verify through other sources.
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