The Grayscale Bitcoin Trust, symbol GBTC, is an investment vehicle that trades like a stock, with each share representing a specific amount of Bitcoin (BTC). Grayscale is a company that offers a variety of financial products. It first introduced GBTC in 2013. Grayscale intends to convert the product from over-the-counter (OTC) trading to exchange-traded fund trading (ETF). When compared to trading Bitcoin on crypto exchanges, the price of Grayscale's GBTC has historically traded significantly above and below the equivalent value of the underlying BTC per share. The price difference is known as the GBTC premium. Is GBTC a good way to buy Bitcoin? GBTC essentially allows people outside of the cryptosphere to own Bitcoin in a way that is similar to a stock under traditional US regulations.