U.S. spot Bitcoin ETFs recorded $1.039 billion in net outflows during the week ending May 15, ending a six-week run of net inflows. The withdrawal period, described as spanning May 11 to May 15, marked a sharp reversal in recent fund-flow momentum. ARKB posted the largest outflow at $324 million, followed by BlackRock’s IBIT at $317 million. Despite the weekly pullback, total net assets for U.S. spot Bitcoin ETFs stood at $104.29 billion and cumulative net inflows reached $58.34 billion, indicating that longer-term demand has remained substantial even as short-term sentiment weakened. The reversal was also linked to inflation concerns, a macro factor that can pressure risk assets by shaping expectations for interest rates and liquidity.