Key Points ETF inflows and outflows measure money entering or leaving a fund, not the performance of the underlying cryptocurrency (or other assets). The Grayscale Bitcoin Trust lost billions in assets despite Bitcoin's 140% gains, while the iShares Bitcoin Trust attracted record inflows during the same period. Fund flows can move opposite to crypto prices when investors migrate to cheaper alternatives or take profits during rallies. 10 stocks we like better than iShares Bitcoin Trust › Cryptocur ...