The Grayscale Bitcoin Trust ETF (NYSEARCA: GBTC ) is one of the top three largest Bitcoin ( BTC-USD ) ETF investment products that investors can buy if they want to gain exposure to the world’s largestAnalyst’s Disclosure:I/we have a beneficial long position in the shares of BTC-USD, COIN either through stock ownership, options, or other derivatives. I wrote this article myself, and it expresses my own opinions. I am not receiving compensation for it (other than from Seeking Alpha). I have no business relat ...