Abu Dhabi’s Mubadala Investment Company has significantly increased its holdings in BlackRock’s iShares Bitcoin Trust (IBIT) ETF, disclosing ownership of 12.7 million shares worth $630.6 million as of Dec. 31 in a Q4 2025 SEC 13F filing on Tuesday.
This holding represents a 46% increase from the 8.7 million IBIT shares the sovereign wealth fund previously reported on September 30th.
Mubadala was not the only Abu Dhabi investment company named in the Al Warda Investments filing. RSC also revealed that it owns $408 million in Spot Bitcoin stock, equivalent to 8.2 million shares.
The two Abu Dhabi investors hold a combined $1.386 billion in IBIT ETF shares.
The timing of the investment in the fourth quarter of last year was in the wake of the 10/10 crypto crash, which wiped out nearly $19 billion in leveraged positions within hours.
The two Abu Dhabi investors have raised stakes in digital assets as part of a steady strategy following MGX and Binance’s landmark $2 billion investment deal announced last March.
Founded in 2024 with support from G42 and Mubadala, MGX became a minority shareholder after investing in stablecoins.
(Written by Bindu Rai; Edited by Brinda Darasha)
bindingu.rai@lseg.com

