BlackRock's IBIT led U.S. spot Bitcoin ETF flows with $381 million on Sept. 21, as the group recorded $999 million in net inflows. Spot Ether ETFs added another $270 million, led by BlackRock's ETHA with $110 million.
Why it matters
The flows show strong demand for regulated exposure to both Bitcoin and Ether in the same session. BlackRock led each category, giving its two products a combined $491 million of inflows.
Market impact
The combined $1.269 billion entering spot Bitcoin and Ether ETFs makes institutional flow the central market signal from the session. Bitcoin products accounted for the larger share, while Ether ETFs still attracted a meaningful $270 million, keeping both assets in focus for ETF-driven demand.
Frequently asked questions
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How much did U.S. spot Bitcoin ETFs attract on Sept. 21?
U.S. spot Bitcoin ETFs recorded $999 million in net inflows on Sept. 21.
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Which Bitcoin ETF led the inflows?
BlackRock's IBIT led spot Bitcoin ETF flows with $381 million in net inflows.
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How much money entered spot Ether ETFs?
Spot Ether ETFs recorded $270 million in net inflows on the same session.
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How much did BlackRock's ETHA attract?
BlackRock's ETHA attracted $110 million in net inflows.
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What was BlackRock's combined inflow across IBIT and ETHA?
IBIT and ETHA attracted a combined $491 million, representing nearly 39% of the $1.269 billion flowing into the two ETF categories.
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