US-listed spot Bitcoin ETFs just posted their worst month ever. Over the past 30 days, the funds saw a net outflow of $6.4 billion — the biggest withdrawal since the products launched in early 2024. Bitcoin fell 17% over the same period.
Record outflow for spot Bitcoin ETFs
That $6.4 billion figure is the largest monthly net outflow on record for the category. The previous peak came during a volatile stretch in late 2024, but this one tops it by nearly a billion. The funds collectively hold tens of billions in assets, so the outflow represents a meaningful chunk of investor cash leaving the market. It's not a panic — but it's the most sustained selling they've seen.
Bitcoin's 17% monthly drop
The price slide follows a similar trajectory. Bitcoin opened the 30-day period around $68,000 and is now trading closer to $56,000. That 17% decline erases gains from earlier this spring. The timing lines up with the ETF outflows, though correlation doesn't prove causation. What's clear: both retail and institutional money are pulling back at the same time.
What happens next
Investors will be watching the weekly flow data closely. The next 30-day window closes on July 21. If outflows slow or reverse, the price could stabilize. If they keep accelerating, the sell-off may have further to run. For now, the record stands — and it's a reminder that even the most popular crypto ETFs aren't immune to cold feet.
