BlackRock’s IBIT ETF Buys 9,139 Bitcoin in One Week, Outpacing Miner Production Threefold

BlackRock’s $IBIT ETF acquired 9,139 BTC in one week, far exceeding miners’ 3,150 BTC output.

Bitcoin netflows showed swings, with outflows above $300M recurring even as price topped $120,000 in July.

Bitcoin’s hashrate reached 1.02 billion TH/s on September 14, marking consistent network strength growth.

BlackRock’s spot Bitcoin ETF, known as $IBIT, recorded significant buying activity during the past week. The fund acquired 9,139 BTC, with the value exceeding $1 billion based on current market rates. During the same period, miners produced an average of only 3,150 BTC as confirmed by an X post by Cointelegraph

This marked a considerable gap between new supply entering circulation and the purchases executed by the ETF. The figures underscored the scale of $IBIT’s weekly accumulation compared to mining output, reflecting an ongoing supply-demand imbalance.

Bitcoin Netflows Show Billions in Swings as Outflows Persist Despite Price Gains

Bitcoin’s trading activity between November 2024 and September 2025 displayed sharp movements in both inflows and outflows. According to Coinglass data, netflows recorded frequent negative sessions, with several exceeding $300 million in outflows, showing continuous shifts in trading behavior.

Source: Coinglass

December and February recorded inflows above $600 million, contrasting with late February outflows near $1 billion. Early March displayed heavy outflows that aligned with a price retreat toward $70,000, marking a significant shift.

From April, consistent outflows continued while Bitcoin advanced beyond $100,000 by July. The asset peaked above $120,000 during late July despite negative flows. The latest figures from September 15 reported $95.68 million outflows, with Bitcoin priced near $115,752.

Bitcoin Hashrate Challenged by Institutional Accumulation

Tracking the current market hashrate, Blockchain.com data reveals that in the last week alone, more Bitcoin was accumulated compared to what was mined. Despite this, Bitcoin’s hash rate increased steadily from September 2024 to September 2025, showing consistent expansion in network computing power. Starting near 620 million TH/s in late September 2024, the measure advanced quickly, reaching 750 million TH/s by December.

Source: Blockchain.com (Hashrate)

In early 2025, activity fluctuated between 750 million and 850 million TH/s. April brought a brief decline, but the recovery restored levels above 850 million TH/s within weeks. By midsummer, the hash rate moved steadily higher, surpassing 950 million TH/s and recording fewer interruptions compared to earlier months.

Momentum carried into August, when the measure crossed the one-billion TH/s mark. This level continued to strengthen, establishing new highs throughout the period. On September 14, 2025, the hash rate reached 1.02 billion TH/s, the highest reading within the observed timeframe. The data across twelve months documented a consistent climb despite periodic dips, underscoring uninterrupted growth in Bitcoin’s computational strength through the year.