BlackRock Bitcoin ETF Holdings Hit Record 806,700 BTC Worth $63.7 Billion

BlackRock’s iShares Bitcoin Trust (IBIT) has accumulated 806,700 Bitcoin (BTC) worth approximately $63.7 billion. The total marks a new all-time high for the world’s largest spot BlackRock Bitcoin ETF.

The record follows nine consecutive trading days of net inflows, during which IBIT added roughly 21,500 BTC. Institutional demand for regulated Bitcoin exposure continues to grow as BTC trades near $78,000.

BlackRock’s IBIT Dominates US Bitcoin ETF Market

BlackRock’s fund now commands roughly 49% of total US spot Bitcoin ETF assets. That puts it well ahead of Fidelity’s FBTC and Grayscale’s GBTC.

The ETF recorded net inflows on 48 of 62 trading days during Q1 2026. Those flows totaled an estimated $8.4 billion for the quarter.

The buying pace picked up in mid-April. IBIT attracted $291.9 million on April 15 and $269.3 million on April 10, according to ETF flow data. That sustained demand pushed total holdings past the 800,000 BTC mark for the first time.

Across the broader market, US spot Bitcoin ETFs have reversed four months of capital flight. The group accumulated roughly $2 billion over four straight weeks of positive net inflows. IBIT contributed approximately $1.7 billion of that total.

MicroStrategy Reclaims Largest Holder Title

Despite the IBIT record, the fund is no longer the single largest corporate Bitcoin holder. MicroStrategy Inc. recently surpassed the ETF with 815,061 BTC on its balance sheet. The firm reclaimed a lead it had lost in Q2 2024.

The Michael Saylor-led firm has bought aggressively this month, adding 13,927 BTC for roughly $1 billion on April 13 alone. The gap between the two now sits at approximately 8,300 BTC.

BlackRock is also broadening its crypto product lineup. The asset manager recently filed an amended S-1 with the SEC for a Bitcoin income ETF under the ticker BITA. The proposed fund would generate yield through a covered call strategy tied to IBIT.

With both IBIT and MicroStrategy continuing to add BTC, the race between the two largest institutional holders may intensify through Q2.

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