Some technicians had been looking at a level just above $9K as support for the retreating crypto, but Bitcoin (BTC-USD) today has broken right through that number.At pixel time, it's trading at $8.7K, down about 7% for the day, and has now given up more than 50% of its big 2020 gains.The slides in Ether (ETH-USD), Bitcoin Cash (BCH-USD), and Litecoin (LTC-USD) have been even steeper.Grayscale Bitcoin Trust (GBTC) -4.75%
