BlackRock's IBIT bought $195.6 million of Bitcoin in a single day, on-chain data shows, while the rest of the spot Bitcoin ETF category combined added just $102.67 million. Over the past month the fund has pulled in $1.57 billion, more than half of the category's $2.99 billion in net inflows.
BlackRock's iShares Bitcoin Trust (IBIT) bought $195.6 million worth of Bitcoin yesterday, according to on-chain data from Arkham. No other fund contributed more that session, and the whole group of US spot Bitcoin ETFs finished the day with a net inflow of just $102.67 million — less than IBIT took in on its own.
A single fund outpaces the category
The arithmetic is simple. If one fund took in more than the entire category's net total, the other funds were collectively net sellers that session. The positive day also reversed the prior session, when spot Bitcoin ETFs had posted an outflow of approximately $149 million before IBIT's buying turned the tally green again. Bitcoin traded above $86,000 during the reported session.
Zoom out to 30 days, though, and the picture steadies. The spot Bitcoin ETF category drew about $2.99 billion in net inflows over that stretch, and IBIT remained the top recipient. Set IBIT's $1.57 billion against the roughly $2.99 billion category figure, and BlackRock's fund accounts for more than half of the month's net money on those numbers.
How the flows turn into buying
IBIT works through authorized participants — large trading firms that create new ETF shares when investor demand rises and redeem them when demand falls. To keep each share backed by real Bitcoin on a 1:1 basis, the fund has to acquire the matching amount of the asset whenever new shares are created. That mechanical link is why IBIT flows get watched closely: they translate brokerage-account demand directly into buying pressure on the underlying asset.
IBIT launched in January 2024, after the US Securities and Exchange Commission approved spot Bitcoin ETFs. It is now the largest US spot Bitcoin ETF by assets under management, with AUM reaching $109.34 billion following the latest reporting. The fund charges a management fee of 0.25%.
A growing share of institutional demand for Bitcoin appears to be flowing through regulated products like IBIT rather than direct ownership of the coins. A month of $1.57 billion in IBIT buying points to a sustained trend rather than a one-day blip.
Source: Crypto Briefing
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