These figures mean that by the end of 2025, BlackRock’s crypto portfolio had grown by about 43% compared to the start of the year. Unsurprisingly, the accumulation was concentrated almost entirely in Bitcoin and Ethereum, the two biggest assets leading institutional exposure to the crypto industry.
Bitcoin was the dominant holding by value. BlackRock’s BTC stash grew from around 552,550 BTC worth about $51.16 billion in January 2025 to about 770,290 BTC valued at $68.05 billion in January 2026. This translates to an increase of approximately 217,740 BTC, adding about $16.88 billion to the firm’s portfolio based on year-end valuations.
Even with Bitcoin’s price down about 5% from January 2025, the increase in BTC units held grew by 39%, which, in turn, pushed the total value higher.
Ethereum, although smaller in absolute terms, saw even faster relative growth. Holdings expanded from 1.07 million ETH valued at $3.59 billion in January 2025 to about 3.47 million ETH worth $10.31 billion in January 2026. That represents an increase of nearly 2.4 million ETH, contributing around $6.71 billion to BlackRock’s crypto holdings in 2025.
These numbers mean that BlackRock’s ETH holdings grew by more than 224% over the year, far outpacing Bitcoin’s 39% increase.
Featured image from Getty Images, chart from TradingView
