In May 2026, U.S. spot bitcoin-ETFs recorded record outflows of $2.43 billion, the largest monthly outflow since November 2025. ([cryptotimes.io](https://www.cryptotimes.io/2026/06/01/us-spot-bitcoin-etfs-post-record-2026-outflow-of-2-43-billion-in-may/?utm_source=openai)) The outflow followed a nine-day withdrawal streak in which investors withdrew $2.8 billion, marking the longest series of outflows since the launch of these funds in January 2024. ([coindesk.com](https://www.coindesk.com/markets/2026/05/29/bitcoin-etf-outflows-reach-record-nine-day-streak-as-investors-pull-usd2-8-billion?utm_source=openai)) The largest contributor to outflows was BlackRock's iShares Bitcoin Trust (IBIT) fund, from which $2 billion was withdrawn during this period. ([blockchain.news](https://blockchain.news/news/bitcoin-etfs-record-outflows-2026?utm_source=openai)) Among the factors that influenced this trend, analysts point to bitcoin price volatility and changing macroeconomic conditions, which led to a decline in institutional investor interest in cryptocurrency assets. Despite significant outflows, bitcoin has shown resilience, holding above $79,000 during May. ([btc.network](https://btc.network/blog/bitcoin-etf-outflow-868-million-may-2026-on-chain-resilience?utm_source=openai)) However, continued outflows from ETFs may signal a need for investors to reassess strategies and a possible change in market dynamics in the coming months.