It would seem that "Wash Trading" is a much bigger problem than originally thought. Wash Trading is the buying and selling of coins by bots on the exchange to artificially create volume and the perception of liquidity. A new study shows that only 3 of the Top 25 exchanges trading Bitcoin according to CoinMarketCap are actually presenting true figures. https://cointelegraph.com/news/report-claims-over-80-percent-of-top-25-btc-trading-pair-volumes-on-cmc-are-wash-traded
This is sad but this is true, I have recently tried to sell UPP on Bibox, coinmarketcap shows volume of millions dollars, but when I placed order below market price, nobody bought it during 2 days, but bots sell each other small orders all the time.