A $999M bitcoin ETF day ended a breakeven drought. How much leverage is underneath?
U.S. spot bitcoin ETFs absorbed $999 million in net inflows on Monday, September 21, their largest single-day intake since late 2024, and the average ETF holder traded back to breakeven for the first time since January. That institutional signal is the strongest this market has produced in months. The part worth scrutinizing is what sits underneath it: record-leveraged derivatives and a short squeeze that did a large share of the heavy lifting. For the wider picture, see our ongoing Bitcoin and ETF-flow coverage .
Key Takeaways U.S. spot bitcoin ETFs recorded $999 million in net inflows on September 21, taking in roughly 11,530 BTC, with every reporting fund positive. The average spot-ETF inv…
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