According to CoinDesk analysis, US spot Bitcoin ETFs have attracted $1.08 billion in the past three days, indicating a resurgence of institutional interest in cryptocurrencies. However, this inflow rate may not be sufficient to support a significant increase in Bitcoin's price. Historical data shows that during previous periods of substantial Bitcoin price appreciation, the average daily net inflow into ETFs was approximately $235 million, while the current average daily inflow (around $86 million) is significantly lower. Analysts note that for a sustained rally, the pace of capital inflows needs to remain robust.