Bitcoin : Spot ETFs break their four-week inflow streak

US spot Bitcoin ETFs have broken their positive momentum. For the week ending Friday, March 27, 2026, they finished with net outflows of around 296 million dollars. After four consecutive weeks of inflows, the signal counts. But it mainly tells the story of a freezing market, not a collapsing market.

A clear stop, but not a total reversal

The bullish streak of spot Bitcoin ETFs has ended. Daily data compiled by Farside shows a weekly flow that has turned negative again, mainly weighed down by the sessions on March 26 and 27, with net outflows of respectively 171.3 million and 225.5 million dollars.

This shift comes after a much stronger month. The previous week had still ended with a net gain of 95.18 million dollars, which brought the cumulative inflows over four weeks to about 2.2 billion dollars. The pace was already slowing down. This time, it clearly gave way.

However, this reading should not be too harsh. The cumulative flows of US spot Bitcoin ETFs remain massive, around 55.9 billion dollars since their launch. In other words, the institutional machine has not stopped. It is catching its breath. And in the current market, this nuance changes many things.

Bitcoin is seeking direction, not an exit

The current problem does not seem to be Bitcoin itself. The real brake comes from the macro-financial climate. Reuters and AP report a sharp increase in risk aversion on the markets, with the war between the United States, Israel, and Iran, rising oil prices, and the return of inflation fears. Wall Street has also experienced consecutive down sessions this week.

In this setting, bitcoin acts less like a breakout asset than as a liquidity thermometer. The market tried several times to surpass 72,000 dollars this month before falling back to the 65,000 to 67,000 dollar zone. This repeated back-and-forth reflects a lack of conviction, not a disappearance of demand.

This is also what market comments over recent days highlight: capital is not completely leaving the ecosystem, but directional bets that are too exposed are avoided. This explains why ETF flows become irregular even as bitcoin remains broadly at the center of institutional activity. The market is waiting for a cleaner macro signal before choosing a real trajectory.

What this pullback really says about institutional demand

The weekly withdrawal should therefore not be read as a general flight. It looks more like a tactical pause. When flows slow after four positive weeks, it often means that large investors are arbitraging risk rather than completely cutting their exposure. Bitcoin remains watched, but it is no longer bought blindly.

The fact that spot Ether ETFs also suffered withdrawals strengthens this reading. Farside noted daily net outflows on several sessions during the week, including 189.3 million dollars on March 26 and another 48.5 million on March 27. Caution therefore does not target bitcoin alone. It more broadly affects crypto exposure listed on stock exchanges.

The follow-up will depend less on a simple technical rebound than on the overall context. If geopolitical pressure eases and the market regains clarity on rates and liquidity, Bitcoin ETFs can quickly become the preferred channel for institutional return. For now, the message is more sober: bitcoin remains desired, but it has not yet become obvious again.