GBTC follows BTC closely. It will likely not morning panic during market hours, as when BTC does panic it does at 4-7am Eastern. I used this correlation to paper trade short GBTC in May 2017 when BTC began crashing and GBTC hadn't yet. Your best bet is to assume $8-9 as support and aim for a nice bounce due to BTC price rallying a bit

Thank you Shawn, very cool!