LONDON — Ether surged past $4,000 Monday to hit a new record high, extending a stunning rally for the world’s second-largest cryptocurrency. Ether, the digital token of the Ethereum blockchain, rose to an all-time high of $4,196.63 at 12:15 p.m. ET, according to Coin Metrics. It now has a total market value of $483.4 billion, less than […] Read more