Key Points Ethereum (CRYPTO: ETH) is up 3.4% in the last 24 hours as of 1:54 p.m. ET on Wednesday. The move comes as the S&P 500 rose 0.4% and the Nasdaq Composite gained 0.2%. Ethereum's Fusaka upgrade goes live today, the latest major update to the coin's network. In the past, similar overhauls have …