Ethereum cleared $1,000 for the first time on Friday. It has since given up some of its gains and is up 6.8% against the dollar to $1,191 at the time of writing. LONDON — Ethereum's recent surge is continuing on Monday, with the cryptocurrency close to its all-time high. ET): The immediate spur for the recent rally was a fourth quarter report on the performance of ethereum, which is a decentralized network for people to run contracts on.