Ethereum (ETH) options open interest increased by 5 fold over the past three months to reach $337 million. Although this figure pales in comparison to the current $1.8 billion Bitcoin (BTC) options market, Ether options have grown to reach the same size the BTC options market was roughly 15 months ago. {chart} Options are divided into two basic instruments: calls, aimed mostly for bullish strategies, and puts, used chiefly on bearish trades. This is a simplistic view, but it provides a bird’s-eye-view of what professional traders expectations are as large trades weigh heavier on the index. {chart} This put/call ratio ... (full story)