The “Crab” strategy, designed by leading DeFi options platform Opyn, is built to make money during bouts of low ether (ETH) price volatility. It has earned 14% returns in U.S. dollar terms and 42% in ether terms since its version (v)2 went live in late July. Ether has dropped 20% since the end of July, however, the cryptocurrency has primarily traded between $1,100 to $1,300 in the past four weeks.