Abu Dhabi Sovereign Wealth Fund Mubadala Reports $630M Holding in BlackRock’s IBIT

• Mubadala Investment Company raised its iShares Bitcoin Trust stake 46% in Q4 2025.

• Year-end IBIT holding reached $630.6M as Bitcoin traded amid volatility.

• Combined Abu Dhabi-linked IBIT exposure topped $1B in U.S. filings.

Abu Dhabi’s sovereign wealth fund, Mubadala Investment Company, disclosed a major Bitcoin-linked holding. The filing showed the fund owned 12.7 million shares of BlackRock’s spot Bitcoin ETF by Dec. 31, 2025. The disclosure explains how the stake grew and where it sits within Mubadala’s broader portfolio.

Mubadala Expands IBIT Position in Fourth Quarter

According to a Form 13F filing with the U.S. Securities and Exchange Commission, Mubadala Investment Company held 12,702,323 shares of the iShares Bitcoin Trust. The position was valued at about $630.6 million at year-end. Notably, the fund reported 8,726,972 shares three months earlier.

The filing shows a 46% increase in IBIT shares between Sept. 30 and Dec. 31, 2025. That growth occurred during a period of Bitcoin price volatility. Bitcoin fell from above $100,000 earlier in the cycle to near $68,000 in February 2026.

The ETF, issued by BlackRock, trades under the ticker IBIT. It provides spot Bitcoin exposure through regulated U.S. markets. Mubadala did not disclose the purchase timing within the quarter.

Other Abu Dhabi Entities and Combined Exposure

The same filing cycle showed another Abu Dhabi-linked investor also increased exposure. Al Warda Investments reported holding 8,218,712 IBIT shares worth about $408.1 million. Together, the two entities held roughly 20.9 million shares valued above $1.04 billion.

Additionally, filings indicated Abu Dhabi-linked investors surpassed $1 billion in combined U.S. spot Bitcoin ETF exposure by year-end. The disclosures focused on regulated ETF holdings rather than direct Bitcoin custody.

These figures appeared alongside Mubadala’s long-standing equity positions. The fund’s largest holding remained GlobalFoundries, valued above $15.7 billion. Other reported stakes included ARM Holdings, Blue Owl Technology Finance, Adobe, Walt Disney, and Ford Motor Company.

Broader Institutional Filings and Market Context

Elsewhere, institutional interest continued through similar disclosures. Goldman Sachs reported more than $1.1 billion in IBIT exposure. Meanwhile, Bank of America and Morgan Stanley updated policies allowing advisors to recommend Bitcoin ETFs.

Separately, filings showed Harvard reduced its IBIT position while adding exposure to BlackRock’s Ethereum ETF. Bitcoin traded near $68,362 during these disclosures.