In January 2018, the price bitkoyna fell to $ 6,000, and the percentage of dominance fell to 33%. The percentage of Ethereum domination increased from 10% to 20%, here it is important to note that other crypto-currencies have reached a record high level of 25% dominance. This is probably due to the explosive growth of the original coin offer (ICO). The next restoration of the market share of bitcoin to 45% occurred in April 2018, then during the May rally from $ 6,800 to $ 10,000 it fell to 36%. Since then, the share of BTC has been growing slowly and is currently returning to 45%. Throughout 2018, the share of Ethereum fluctuated between 15% and 20%, the share of other crypto-currencies was 20-25%. The recent rally of bitcoin from $ 6,200 to $ 7,500 contributed to the steady growth of the market share. Perhaps, this rise is due to interest from institutional investors, as BTC has the greatest liquidity and, as a consequence, is a good option for investment. Based on the data of the rally in 2017, a growing percentage of bitcoin domination combined with an increase in the price of crypto currency is a favorable setting for a major rally.