Bitcoin and other cryptocurrencies were rallying on 20 May as digital assets continued a recent outperformance of stocks, though there are signs in the derivatives market that crypto traders are preparing for a move downward.

The price of Bitcoin rose 4% over the past 24 hours to around $30,500. The largest crypto was still trading around the lowest point all year, but comfortably higher than recent levels below $30,000 and well above near $26,000 low reached in last week's cryptocurrency crash.