Grayscale's Bitcoin Trust (GBTC) has seen significant outflows this year, with its cumulative outflows exceeding $21 billion since its inception. This translates to an average daily outflow of $89.9 million. In contrast, other US Bitcoin spot ETFs have experienced inflows totaling $20.7 billion during the same period. Notably, the BlackRock Bitcoin Spot ETF has attracted inflows of $35.8 billion. The outflows from GBTC may be attributed to factors such as investors seeking alternative investment options, concerns over Grayscale's high fees, and the emergence of other Bitcoin spot ETFs with lower expense ratios. Despite these outflows, GBTC remains the largest Bitcoin investment vehicle in the world.