[initplus]

GBTC is it's own weird separate thing, with a whole bunch of red flags. It's not yet an ETF. They don't even distribute the fund prospectus online, it's only available by email request.

Tracking for actual BTC futures ETF's is quite good. Arbitrary example: https://ycharts.com/companies/BITO/discount_or_premium_to_na...

GBTC has diverged so far because it doesn't have a public creation/redemption mechanism. Matt Levine briefly touched on this recently: https://www.bloomberg.com/opinion/articles/2024-01-04/put-th...