If I had a coin listed on yobit and then I was trading it with myself pumping it's price up to $100 and if it had a total supply of 1 coin then the market
Share for my coin would be $100 I hope now you understand what market share means
market share
noun
the portion of a market controlled by a particular company or product.
So that's not the market share of anything, it's the market cap, which is unrelated. Bitcoin's
market share is a percentage of the total cryptocurrency market (which counts pseudo-cryptocurrencies like Ripple), while its
market cap is a consistent number, which is just the supply multiplied by the price.
Furthermore, there are several inherent flaws in the concept of market caps for currencies, including:
-Not all of these coins are actually traded, and it's difficult to compare how much the total supply would actually be worth. If I held all of the ETH in existence and I tried to sell it, I wouldn't actually get ETH's market cap for it - far from it.
-The scenario of having one coin on an exchange and selling it could be the same if the coin had an extremely high supply. Say that the altcoin Devs hold a majority of the coins like Ripple - then the market cap becomes meaningless because not all of it is available.
I could equally create an altcoin with a supply of ten octillion and list it on YoBit (shouldn't be too hard). I sell one to myself for 100 dollars and boom, the market cap is one nonillion. Not too hard, was it?