BlackRock’s iShares Bitcoin Trust (IBIT) has solidified its position as the dominant player in the U.S. spot Bitcoin ETF market, reaching an impressive milestone of $91.06 billion in assets under management (AUM). This achievement signifies the continued investor confidence in Bitcoin despite its recent price fluctuations.
The fund’s total net inflows have surged to $58.04 billion as of August 13th, showcasing strong market demand for IBIT. Even without fresh inflows on that day, IBIT closed at $69.84 per share, 0.57% above its net asset value, indicating sustained market interest.
With 3.72% of all circulating Bitcoin held by the iShares Bitcoin Trust, it has firmly established itself as the leading spot Bitcoin ETF in the U.S. The fund currently has 54.82 million outstanding shares valued at a total of $3.79 billion, reflecting its rapid growth since its launch in January 2024.
In comparison, other Bitcoin ETFs such as Fidelity’s FBTC and Grayscale’s GBTC hold $24.77 billion and $22.18 billion in assets respectively. While Fidelity has attracted $12.07 billion in net inflows, Grayscale has seen $23.72 billion in outflows since transitioning to an ETF. Ark Invest’s ARKB and Bitwise’s BITB manage smaller market shares with $5.58 billion and $5.02 billion in assets respectively.
The recent volatility in Bitcoin’s price, driven by macroeconomic factors such as the hotter-than-expected U.S. PPI data, highlights the market’s sensitivity to external influences. Despite Bitcoin’s recent pullback, Ethereum has captured investor attention with U.S. spot ETH ETFs recording a record-breaking $1.019 billion in net inflows on August 11th, surpassing Bitcoin-focused ETFs.
BlackRock’s iShares Ethereum Trust (ETHA) has also experienced significant growth, surpassing $10 billion in cumulative net inflows within three months. Holding over 3.3 million ETH, ETHA reflects the growing investor interest in the second-largest cryptocurrency.
In conclusion, BlackRock’s iShares Bitcoin Trust has set a new standard in the U.S. spot Bitcoin ETF market with its impressive AUM of $91.06 billion. The fund’s continued growth and investor confidence signal a bright future for Bitcoin ETFs in the evolving financial landscape.

