CryptoSlate
US spot Bitcoin ETFs extended their inflow streak to six trading days on Monday, adding $337.6 million and pushing the run to roughly $2.26 billion. August has now attracted about $2.72 billion, surpassing April's previous full-month high of $1.97 billion and putting the funds on track for their strongest month of 2026. Total assets across the category climbed to $98.56 billion, within $1.44 billion of reclaiming the $100 billion threshold.
Why it matters
The streak is the clearest signal yet that institutional demand is returning after a year dominated by net outflows. US spot Bitcoin ETFs remain roughly $2.57 billion in the red for 2026, so the August surge is reversing months of weakness rather than simply extending an uptrend. BlackRock's IBIT has captured the bulk of the rebound, drawing about $1.33 billion last week and another $208.9 million Monday, around 62% of the day's intake. Fidelity's FBTC followed with $104.6 million.
The rally is no longer showing up in creations alone. Spot ETF turnover hit $22.1 billion last week, more than triple the $6.9 billion of the week before, and IBIT call-option volume surged to a record 1.58 million contracts Wednesday. Call volume stayed above 1 million contracts in each of the next three sessions, while call skew rose 0.05 points, the largest three-day increase in at least two years. Professional money is layering into the move across creations, secondary trading, and options rather than picking a single rail.
Market impact
Bitcoin extended above $80,000 on Tuesday for the first time since May, lifting its August gain to roughly 28% after recovering from the low-$60,000s. The price move has done much of the heavy lifting on AUM: total ETF assets expanded by nearly $22 billion in six trading sessions, far more than the $2.26 billion of net inflows during the same streak. Most of that came from appreciation of Bitcoin already held inside the funds, layered on top of fresh capital arriving at the fastest monthly pace of 2026.
Frequently asked questions
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How much did US spot Bitcoin ETFs add during the six-day streak?
About $2.26 billion in net inflows, with $337.6 million on Monday alone and roughly $2.72 billion for August overall.
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How close are US spot Bitcoin ETFs to the $100B AUM milestone?
Total assets climbed to $98.56 billion, leaving the category about $1.44 billion short of reclaiming the $100 billion line.
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Why are call options surging on BlackRock's IBIT?
IBIT call-option volume hit a record 1.58 million contracts last Wednesday and stayed above 1 million for three straight sessions, with call skew up 0.05 points.
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How much of August's flow is going to BlackRock's IBIT?
IBIT captured about 62% of Monday's inflows, drawing $208.9 million that day and roughly $1.33 billion across the prior week.
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Are 2026 Bitcoin ETFs in net outflows or inflows overall?
Despite the August surge, US spot Bitcoin ETFs remain roughly $2.57 billion in net outflows for 2026 year-to-date.
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