Data from BTC and ETH ETFs revealed the following:
Bitcoin ETFs saw net inflows on 310 trading days, net outflows on 174 days, and relatively stable inflows on the remaining 16 trading days.
Ethereum ETFs saw net inflows on 184 trading days, net outflows on 157 days, and no net inflows on 21 days. This suggests that, in the long term, funds have generally flowed in.
Bitcoin and Ethereum fund flows show a moderate correlation: when both products trade concurrently, the correlation coefficient of daily net flows is approximately 0.43, indicating that market sentiment influences both assets to some extent, but not in perfect sync.