BTC ETFs see $635M single-day outflow

TLDR

Spot Bitcoin ETFs just saw about 635 million dollars of net outflows in one day, their biggest withdrawal in months.

1. On 13 May, U.S. spot Bitcoin ETFs recorded roughly 635 million dollars of outflows, the largest single day since January and a break from recent strong inflow trends.
2. The outflows line up with hotter inflation data, higher for longer rate fears, Middle East tension and some rotation into cash, tokenized yields and altcoin ETFs, especially Solana.
3. It is a warning signal rather than a disaster; ETF flows still matter, but their short term link to Bitcoins price is weaker, so the key is whether multi day outflows and macro pressure persist.

Deep Dive

1. How Big This Outflow Really Is

Multiple flow trackers report that on 13 May 2026, spot Bitcoin ETFs saw about 635.23 million dollars in net withdrawals, the largest single day outflow since late January and the second day of consecutive outflows, according to SoSoValue data cited by one report on 635.23 million in net withdrawals.

Other coverage notes that over the last five trading sessions, cumulative outflows have reached around 1.26 billion dollars, trimming total net inflows since the U.S. spot ETFs launched from about 59.76 billion dollars to 58.5 billion dollars and ending a six week run of positive weekly flows described in a separate six week streak of positive weekly inflows.

For scale, current Bitcoin ETF assets are roughly 107 billion dollars, so a 635 million dollar day is material but still less than one percent of total AUM.

2. Macro And Rotation Drivers

The outflows coincided with Bitcoin slipping below the 80,000 dollar area after a stronger than expected U.S. Producer Price Index print, which raised odds that the Federal Reserve keeps rates elevated for longer, as highlighted in an analysis linking the ETF move to a PPI surge and higher for longer fears.

Other coverage ties the timing to heightened Middle East tensions and a Hormuz related energy shock, describing the 635 million dollar ETF redemptions as institutional de risking rather than a loss of faith in Bitcoin, in a piece on Bitcoin ETF outflows amid Middle East tensions.

Flows data also show rotation rather than pure exit: one sector review notes that Solana ETFs have not had a single outflow day in May and have attracted over 90 million dollars, while XRP, DOGE and LINK products see modest net inflows alongside the leading altcoin ETF flows. Separately, tokenized Treasury products now hold around 15.35 billion dollars with yields near 3.41 percent, drawing capital from spot crypto according to a report on record tokenized Treasuries TVL and yields.

3. How Much This Matters For BTC Price

Bitcoin has recently stalled just below its 200 day simple moving average around 82,000 dollars and has pulled back a few percent, but analysts note that ETF flows and price moves have decoupled somewhat. One study finds the 90 day correlation between daily BTC returns and ETF net inflows has dropped to 0.16 from 0.68 earlier in the year, as described in a piece on the drop in correlation between flows and price.

That means a single large outflow day is no longer a clean predictor of deeper downside. Instead, the forward signal is whether outflows continue at scale, whether macro data (inflation, growth, oil) stay hostile and whether BTC holds key supports near 80,000 dollars while ETF AUM remains broadly stable.

Conclusion

The 635 million dollar single day outflow from Bitcoin ETFs is a clear sign of institutions de risking around inflation and geopolitical shocks, but it comes after months of heavy inflows and with ETF assets still near record size.

If multi day outflows and macro headwinds continue, ETF redemptions could become a stronger drag on Bitcoin, while stabilizing flows or renewed inflows would suggest this was a temporary risk off reset rather than the start of a sustained unwind.