Grayscale CEO Michael Sonnenshein stated on Monday to CNBC that the fees for their flagship Bitcoin ETF will decrease over time. Since Grayscale's GBTC converted to an ETF in early January, outflows have exceeded $12 billion, largely due to its fees being higher than average. Sonnenshein stated that as the emerging crypto ETF market matures, Grayscale expects to lower the fees for its Grayscale Bitcoin Trust ETF in the coming months.