I've some concerns and queries, i observed that many altcoins even some major coins create fake volume, if a project is new and initially listed on a small exchange and create fake volume it's obvious understood that they're trying to get listed on coinmarketcap, but A coin which is existed in everywhere, even big exchanges but still they create fake volume on small exchanges, what this means? Why they do that? Is everything just done by exchanges or project itself, and also that makes a clear difference in prices as compared to official price of market that makes frustrated.
There are two different methodologies used for faking trade volumes. The first is the easiest one. The promoters of shitcoins contact the smaller exchanges and in collusion, they rig the order books. But this is not a very effective method, as coinmarketcap has now devised methodology to identify such coins and exclude them from their platform.
The second methodology is to contact "specialists" who can get your coin listed in coinmarketcap. The exchange owners are not involved here, and the specialist will manipulate the trading volume using bots and this can be very difficult to detect. As per reliable sources, the fee charged for this "service" can range from $10,000 to $20,000 per coin. More details can be found here:
https://www.coindesk.com/for-15k-hell-fake-your-exchange-volume-youll-get-on-coinmarketcap