There is a lot of positive momentum in the crypto market right now though it remains to be seen how long the momentum will last. Currently, Ethereum is on a bull run. The coin is outperforming the rest making it altcoin of the moment.
The coin has gained over 12% in the past 24 hours and this has helped it cross the $800 mark for the first time since the early weeks of March. As of this writing, Ethereum has a market cap of $79,250,101,351.
source :
https://crypto-lines.com/2018/05/04/ethereum-is-on-a-bull-run/Yeah its because ethereum is always showing good positive reactions when bitcoin's value has surged up,as most of the altcoins including ethereum is dependent to bitcoin's value as bitcoin is growing most of the coins in the market are growing too,which is why we should be taking our profits because few days from now the market is going to be corrected.