What I have experienced in the field of cryptocurrency for the past two years has not been a stable coin, that is also based on my experience, because the price of one factor is influenced by not only the supply of the coin or the other, but the coin Almost stable there might be, like the XRP, the coin that I watched for two years did experience ups and downs, and this coin could rival coins of the same class Ethereum, and could even shift Ethereum to the position of the two biggest coins in the world, and it was very special to me, but maybe there is a more stable coin, because to research thousands of coins, I can't, what I know is that XRP coins are almost stable on the cryptocurency market.