Ethereum will make a bull run till the end of 2019 because JP Morgan claimed they are working on Quorum and it will be an enterprise version of Ethereum that tokenizes gold bars of the firm.
I am also waiting for this event. Suppose, the price of Ethereum will be at least tripled. Therefore, there is a sense to invest in this altcoin. The more money you spend for ETH now, the bigger the returns will be.