On April 16th, the U.S. spot cryptocurrency ETF market experienced a rare overall net inflow. Bitcoin ETF saw a net inflow of $26.05 million, Ethereum ETF had a net inflow of $18.02 million, SOL spot ETF recorded a net inflow of $15.50 million, and XRP spot ETF had a net inflow of $11.86 million. The total net inflow across these four assets exceeded $70 million, with Bitcoin experiencing a net inflow for three consecutive days and Ethereum for six consecutive days. This set of data not only signals short-term fluctuations in capital flows but may also indicate a structural change in the systematic allocation logic of traditional institutional funds operating within compliant channels. What does the synchronized net inflow of these four assets mean? A net inflow of a single ETF is usually interpreted as a market sentiment or short-term capital behavior. But when Bitcoin, Ethereum, and...