Abu Dhabi’s sovereign wealth fund Mubadala Investment Company has raised its position in BlackRock’s iShares Bitcoin Trust (IBIT), reporting ownership of 14,721,917 shares valued at $565,616,051 as of March 31, 2026, according to a 13F filing released today. 

That marks a 16% increase from the 12,702,323 shares the fund held at the end of Q4 2025.

The disclosure extends a now-unbroken accumulation streak that began in Q4 2024, when Mubadala first disclosed bitcoin exposure worth at least $436 million. The fund added shares through a Q1 2025 filing that showed 8,726,972 shares at $408.5 million, then surged to 12.7 million shares worth $630.6 million by December 31, 2025 —…

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