BlackRock Spot Bitcoin ETF IBIT Rallies 19% in Three Weeks

BlackRock’s iShares Bitcoin Trust, or IBIT, has attracted about $63 billion in investor capital since its January 2024 launch, becoming the world’s largest spot bitcoin ETF. Robbie Mitchnick, BlackRock’s head of digital assets, said mounting concern over U.S. government debt and deficits strengthens bitcoin’s appeal alongside gold as an emerging store of value, particularly as equities lag and fixed-income markets remain volatile.

Data reported on Aug. 27, 2026, showed 439.5 million IBIT shares changed hands in the prior week, the fund’s highest volume for a positive week since launch. IBIT climbed 22.59% to $43.68 as bitcoin gained about 23%, while the ETF recorded $1.33 billion in weekly net inflows. August inflows reached $2.64 billion, the most since October 2025, signaling stronger institutional demand.

Morgan Stanley expanded its digital-asset exposure in the second quarter, underscoring how major Wall Street firms are increasingly using regulated exchange-traded products to gain access to cryptocurrencies. BlackRock’s iShares Bitcoin Trust, or IBIT, is among the largest US spot Bitcoin ETFs, making changes in institutional ownership a closely watched gauge of mainstream demand for the asset class.

The bank increased its IBIT position by 23% from the previous quarter to about 16.5 million shares as of June 30, according to its latest filing. Morgan Stanley also raised its exposure to Ether funds during the quarter, with its holding in BlackRock’s iShares Ethereum Trust ETF, or ETHA, roughly tripling. It additionally added to its position in a Bitcoin trust fund launched by the bank.

After the U.S. Securities and Exchange Commission approved spot Bitcoin ETFs in January 2024, BlackRock launched the iShares Bitcoin Trust (IBIT), allowing investors to gain Bitcoin exposure through brokerage accounts. Its significance extends beyond bringing traditional capital into crypto: it could also steer crypto investors toward mainstream funds.

Jay Jacobs, BlackRock’s U.S. head of equity ETFs, said on June 18, 2026, that about three-quarters of IBIT investors had never previously owned an ETF. As of a June 19 report, IBIT had about $48 billion in assets under management and held 765,936 Bitcoin. Some investors subsequently also bought the IVV S&P 500 fund, the BAI AI fund and the IAU gold fund.

BlackRock’s spot Bitcoin ETF, IBIT, is a key channel for traditional capital entering crypto assets, and its flows are often viewed as an indicator of institutional demand. Continued Bitcoin accumulation by the ETF not only reduces circulating supply but may also strengthen upward price momentum and investor confidence.

At the time of the report, IBIT had recorded net inflows of more than 17,000 Bitcoin over the previous week, worth about $1.28 billion at then-current prices, helping BTC break above $73,000. Prediction market Polymarket showed that traders had raised the probability of Bitcoin exceeding $75,000 in March to 84%.