Ethereum broke through 4,400. Compared with last week, Ethereum's implied volatility and skew have risen significantly, and the market's expectations for a rise have increased significantly. In terms of blocks, today's block call options traded 330 million, accounting for 24% of the total turnover, mainly medium- and long-term call options, with large investors more optimistic about the sustainability of Ethereum's rise. Bitcoin, on the other hand, has primarily focused on buying protective put options, indicating market divergence. Currently, the majority of trading activity is concentrated on Ethereum. Option trading recommendations: Short-term buy ETH call and BTC put options, cross-currency straddle strategy.(Greeks.live)