Key dealers
- The Mubadala Investment Company increased its holding in Blackrock’s Spot Bitcoin ETF to $ 8.7 million valued at $ 408 million.
- Citadel Advisors expanded their Ibit holding to over 3 million shares worth approximately $ 147 million.
New SEC applications reveal that Abu Dhabi’s Mubadala Investment Company and Citadel Advisors have increased its holding in Blackrock’s Spot Bitcoin ETF, Ishare’s Bitcoin Trust (Ibit), a sign of lasting institutional interest in crypto-related assets despite the recent market volatility.
Mubadala Investment Company, Abu Dhabi’s Sovereign Wealth Fund, increased its holding in Blackrock’s Tot Bitcoin ETF to $ 8.7 million valued at $ 408 million as of March 31, according to one Thursday File.


This represents a top from 8.2 million IBIT shares was held at the end of last year. But the total value of the holdings fell from $ 436 million to $ 408 million due to a decline in the share price.
Between December 31, 2024 and March 31, 2025, IBIT’s share price fell from about $ 54 to about $ 47, according to Yahoo Finance data. ETF’s shares closed on Thursday down to $ 58.
Citadel Advisor also expanded its Ibit Position during Q1 2025. According to a Thursday FileThe company held over 3 million IBIT shares worth approximately $ 147 million, up from approximately 1 million shares in December.


In addition, Citadel Advisors reported that they had $ 676 million in call options and $ 366 million in the PUT option tied to Ibit.
Mubadala and Citadel advisers join other major institutional investors, including Goldman Sachs and Future groupby expanding its Ibit exposure. But not all major holders increase their efforts.
The state of Wisconsin Investment Board left its entire position of $ 321 million in Blackrock’s Bitcoin ETF, according to a new Sec archiving. Despite the sale, the Board still has crypto-related assets, including almost $ 19 million in the Coinbase share.
Millennium Management, formerly the largest Ibit holder, on Thursday reported owns approximately 17.5 million shares as of March 31, valued at approximately $ 823 million. This is down from the 29.8 million shares worth $ 1.5 billion revealed in its February archiving.


Millennium’s new archiving also revealed exposure to IBIT alternatives, including $ 11.5 million in call options and $ 12.5 million in PUT Options.
Millennium is still one of IBIT’s best shareholders. According to the latest information traced by Finel, the company is the second largest institutional holder, behind Goldman Sachs. Citadel is ranked as third, followed by other major stakeholders such as Capula Management and De Shaw & Co.

