Do you think it´s a disadvantage to invest in GBTC instead of buying Bitcoin directly because you can trade Bitcoin 24/7 and GBTC only at normal market times? When investing in GBTC you couldn´t react to events which influence the Bitcoin price over the weekend.
I have no experience buying bitcoin yet. What i know is that you have not to buy one bitcoin but you can buy a fraction. When looking at the GBTC chart, you can see some huge gaps over the weekend. 01.08 -01.11, 02.05 -02.08. This makes me a little bit nervous.
It shouldn't. Ultimately GBTC will follow BTC. GBTC is trading at a discount to BTC. So unless you're trying to hodl BTC outside of Uncle Sam's reach (not held at a broker or custodian), you might as well sell any BTC you have buy GBTC at a discount. https://ycharts.com/companies/GBTC/discount_or_premium_to_nav