BlackRock’s iShares Bitcoin Trust (IBIT) has reached a significant milestone, accumulating a total of 806,700 Bitcoin (BTC) valued at approximately $63.7 billion. This achievement not only marks a new all-time high for the world’s largest spot Bitcoin exchange-traded fund (ETF) but also reflects a burgeoning interest in Bitcoin from institutional investors. Following a remarkable nine consecutive trading days of net inflows, IBIT added around 21,500 BTC during this period, highlighting growing institutional demand for regulated Bitcoin exposure as the cryptocurrency hovers near the $78,000 mark.
Presently, BlackRock’s fund controls about 49% of the total assets in U.S. spot Bitcoin ETFs, significantly outpacing competitors such as Fidelity’s FBTC and Grayscale’s GBTC. During the first quarter of 2026, the ETF saw positive net inflows on 48 out of 62 trading days, amounting to an estimated $8.4 billion for the quarter, further illustrating the sustained interest from investors.
The momentum around IBIT intensified in mid-April, with substantial inflows recorded on multiple days. On April 15, the ETF attracted $291.9 million, followed by another $269.3 million on April 10, according to ETF flow data. This surge in demand propelled IBIT’s total holdings beyond the 800,000 BTC mark for the first time.
In the context of the broader market, U.S. spot Bitcoin ETFs have reversed a trend of capital flight, collectively amassing roughly $2 billion across four consecutive weeks of positive net inflows. IBIT alone contributed approximately $1.7 billion to this total.
However, despite its record-setting status, IBIT is no longer the largest corporate holder of Bitcoin. MicroStrategy Inc. has reclaimed its position, surpassing the ETF with a total of 815,061 BTC on its balance sheet. Under the leadership of Michael Saylor, the firm has made aggressive acquisitions this month, purchasing 13,927 BTC for around $1 billion on April 13 alone. The current gap between MicroStrategy and IBIT now stands at approximately 8,300 BTC, indicating a competitive landscape in the cryptocurrency investment space.
