Why BlackRock-Linked Crypto Holdings Rose $29.5 Billion in Q3 2026

BlackRock-linked crypto holdings were estimated to rise from $47.56 billion on July 1 to about $77.1 billion on September 30—a gain of $29.54 billion, or roughly 62%. The increase reflected both rising cryptocurrency prices and higher reported token balances. It should not be read as $29.54 billion of cash invested by BlackRock: the total is an estimate based on wallets attributed to the firm, not a confirmed corporate treasury figure. 26

Two forces lifted the estimate: prices and balances

When the market value of Bitcoin and Ether rises, the dollar value of existing holdings increases even if the amount of crypto held stays the same. One report attributed part of the quarter’s increase to Bitcoin rising more than 42% and Ether more than 70%. 7

The reported Bitcoin balance also grew. IBIT was said to hold about 738,200 BTC at the start of Q3 and about 801,270 BTC by quarter-end—an increase of roughly 63,070 BTC, or 8.5%. That rise in coin count added to the effect of price changes on the estimated portfolio value. 56

The available reporting does not provide a reliable dollar-by-dollar breakdown of how much of the $29.54 billion increase came from price appreciation versus additional holdings. 2

How the three ETFs fit in

BlackRock’s Bitcoin trust, IBIT, provides Bitcoin exposure; ETHA provides Ether exposure; and ETHB is a staked-Ether fund designed to reflect Ether’s price as well as staking rewards from a portion of its holdings. 1924

ETF inflows help explain how balances can grow, but they are not the same as a confirmed tally of crypto bought by BlackRock itself. For example, IBIT and ETHA reportedly received about $1.19 billion and $320.45 million in net inflows, respectively, over five trading sessions through September 23. ETHB recorded $15.64 million over a separate seven-day period. These figures cover only part of the quarter, and reports of money flowing into a fund do not, on their own, establish the exact amount of underlying crypto acquired. 326

September inflows were part of a wider pattern

The September figures offer a snapshot, not a complete explanation for the quarter’s change. The increase in IBIT’s reported Bitcoin balance from the start to the end of Q3 indicates that accumulation was visible across the quarter, rather than only in those late-September sessions. 6

Demand also extended beyond BlackRock’s funds: U.S. spot Ether ETFs reportedly drew about $690 million in net capital in one late-September week. That broader demand provides context for the period, but it does not show how much of BlackRock’s estimated Q3 increase came from those flows. 29

What the $77.1 billion figure does—and doesn’t—show

The headline gain combines changes in token prices and balances in wallets attributed to BlackRock. Because the figure is an estimate rather than a confirmed corporate treasury total, it should not be described as cash BlackRock invested or as a precise measure of ETF inflows. The strongest supported conclusion is that higher prices and increased reported crypto balances together raised the estimated value of BlackRock-linked holdings; the available figures do not isolate each factor’s contribution. 26