BlackRock has announced a significant development concerning its Bitcoin ETFs. According to Cristiano Castro, the director of business development at BlackRock Brazil, the firm now makes more money from its Bitcoin ETFs than from any other product it runs.
Castro added that the company’s Bitcoin funds now sit at the top of its revenue list. Notably, BlackRock runs more than 1,400 ETFs worldwide and controls over $13.4 trillion in total assets.
BlackRock hails Bitcoin as IBIT breaks records
Castro made all these known at the Blockchain Conference in São Paulo and called the growth “a big surprise.” He said money flowing into BlackRock’s Bitcoin ETFs, including the U.S. fund IBIT and Brazil’s IBIT39, is now close to $100 billion. “When we launched, we were optimistic, but we didn’t expect this scale,” he said. The comment came as Bitcoin funds faced both inflows and outflows across global markets.
IBIT was launched in January 2024 after United States regulators approved spot Bitcoin ETFs. The fund became the fastest ETF in history to reach $70 billion in assets, achieving the feat in 341 days. Even with Bitcoin price swings, the fund now holds $70.7 billion in net assets, based on SoSoValue data.
During its first year, IBIT recorded more than $52 billion in net inflows. That number beat every other ETF launched in the past ten years. By October 2025, IBIT had already produced about $245 million in yearly fees. The growth stems from BlackRock’s global sales network and from rising demand by large institutions after U.S. approval.
IBIT now controls more than 3% of Bitcoin’s total supply. After that success, BlackRock rolled out other Bitcoin-linked products, including overseas ETPs. Castro also spoke on recent money leaving some Bitcoin funds. He said outflows match how retail investors often react when prices drop.
“ETFs are a very liquid and powerful tool. They’re meant for people to manage flows,” he said. BlackRock also increased its own exposure. Its Strategic Income Opportunities Portfolio recently lifted its IBIT stake by 14%, showing the firm is still increasing its Bitcoin-linked exposure from inside.
