U.S. cryptocurrency exchange-traded funds (ETFs) experienced substantial net outflows in early August 2025, marking notable shifts in investor sentiment. On August 1, Bitcoin ETFs recorded $812.3 million in net outflows, the second-largest daily outflow since their inception, with major withdrawals led by Fidelity ($331 million), Grayscale ($214 million), and ARK ($117 million). Ethereum ETFs ended a 20-day inflow streak on the same day with $152.3 million in net outflows, driven largely by funds such as BlackRock and Grayscale. The trend continued into August 4, when Bitcoin ETFs saw $333 million in net outflows, including a $292 million withdrawal from BlackRock's IBIT fund. Ethereum ETFs faced their largest single-day outflow of $465.1 million, primarily due to a $375 million withdrawal from BlackRock's ETHA fund. Despite these outflows, some reports noted that Ethereum ETFs had maintained a 15-week streak of inflows prior to this correction, and certain funds like ETHA still reported monthly inflows. Analysts suggest that these outflows may reflect short-term profit-taking amid a cautious market environment, as Bitcoin prices hovered below $120,000 and Ethereum prices around $3,600. The combined outflows from Bitcoin and Ethereum ETFs on August 4 totaled approximately $798 million. Additional data indicated that some ETFs, such as Bitwise and VanEck, showed zero or positive flows during this period, and that a portion of profits from certain Bitcoin ETFs is allocated to Bitcoin developers. The outflows interrupted multi-week inflow streaks for both Bitcoin and Ethereum ETFs, signaling a potential shift in investor behavior in the U.S. crypto ETF market.