In a notable shift, US-listed spot Bitcoin exchange-traded funds (ETFs) experienced a significant outflow of $2.84 billion over a record nine-day period, indicating a potential decline in institutional interest in Bitcoin. This streak, which concluded on May 29, 2026, eclipsed the previous record of eight days of outflows observed in February 2025.
On Thursday alone, spot Bitcoin ETFs saw net outflows of $223 million, contributing to the cumulative losses. BlackRock’s iShares Bitcoin Trust (IBIT), the largest ETF in this category, was especially affected, accounting for approximately $2.04 billion of the total outflows. Notably, a withdrawal of $527.8 million on May 27 marked IBIT's second-largest daily outflow.
Despite these challenges, BlackRock’s IBIT maintains its position as the leading US spot Bitcoin fund, holding around 792,000 BTC, which constitutes about 62% of the total holdings across all US spot Bitcoin ETFs. In contrast, newly launched Hyperliquid (HYPE) ETFs have shown resilience, attracting fresh investments and reporting steady inflows during the same period.