Bitcoin ETFs Shed $635M in One Day, October Turns Red

One brutal Thursday erased everything bulls had built over three straight days of inflows. US spot Bitcoin ETFs bled $635 million in a single session, flipping October's running total to a net outflow of $175 million. That's the kind of one-day reversal that gets your attention.

The timing matters. Three consecutive days of positive flows had given ETF watchers a reason to feel good about institutional appetite heading into the back half of October. That optimism is now on pause. When a single day can wipe a multi-day streak and push the monthly tally into the red, it signals that conviction on the buy side is still fragile.

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For active traders, this is your yellow flag. ETF flow data is one of the cleaner real-time reads on what large, regulated money is actually doing — not what it's saying. A $635 million single-day exit isn't noise. It's a statement. Whether it reflects profit-taking, macro repositioning, or genuine risk-off sentiment, the net effect is the same: sellers showed up in force.

Watch how the rest of October closes. If inflows resume quickly, this looks like a flush. If outflows persist, October could shape up as a meaningful distribution month — and that has implications for near-term price structure. Either way, the monthly scorecard just got a lot more complicated.

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