Foresight News reported that according to CoinDesk, the inflow of funds into US spot Bitcoin ETFs has stagnated in 2025, failing to continue the strong growth momentum of 2024. In the past 30 days, the net outflow of funds reached $180 million, setting one of the highest withdrawal rates since the ETF went public. The weak inflow of funds is mainly affected by the weak price of Bitcoin and the reduction of arbitrage opportunities. The price of Bitcoin has fluctuated significantly this year, reaching a new high of $109000 in January due to market expectations that the Trump administration may implement more friendly cryptocurrency policies, but dropping to $76000 in early March due to uncertainty over tariff policies. The intensification of market volatility has led to retail investors selling, while institutional investors are closing out cash and carry trades, a strategy that involves long ETFs while short CME Bitcoin futures. At present, the yield of this arbitrage transaction has dropped to about 2%, which is one of the lowest levels since the launch of ETF. However, low-risk assets such as US treasury bond bonds provide higher yields, leading to capital outflow from the Bitcoin market. Historical data shows that when the outflow of ETF funds intensifies, it often means that the price of Bitcoin is approaching a temporary bottom, such as during the pullback period in April and August 2024.