BlackRock adds a tokenized fund aimed at stablecoin reserves

What was reported

According to a summary produced by grok-4.5 search tools, dated August 4, 2026, BlackRock on August 3 expanded its tokenized cash line-up in two steps.

The first: onchain shares of the BlackRock Select Treasury Based Liquidity Fund, ticker BSTBL, issued on Ethereum. The second: a new product, the BlackRock Daily Reinvestment Stablecoin Reserve Vehicle, or BRSRV, which the summary describes as reinvesting dividends daily and being accessible across multiple blockchains including Solana. Securitize is named as BRSRV's transfer agent and tokenization provider.

The summary states both funds are intended to qualify as eligible reserve assets for permitted U.S. payment stablecoin issuers under the GENIUS Act.

The numbers in the summary

BlackRock's existing tokenized fund, BUIDL, is put at roughly $2.5 billion in assets. The firm's cash strategies overall are given as nearly $1.073 trillion, and it is described as already overseeing about $60 billion of reserves for Circle.

That $60 billion figure is the one worth holding onto. It suggests the relationship between the largest asset manager and a major stablecoin issuer already exists at scale in conventional form; BRSRV, on the description given, is an attempt to package the same function as a token that can move on the chains where stablecoins actually circulate.

Why it matters for prediction and betting markets

Stablecoins are the settlement layer for most onchain betting and prediction market activity. What backs them, and how quickly that backing can be verified or moved, is not an abstract question for anyone holding a position denominated in one. A reserve vehicle that reports daily and settles onchain changes the plumbing rather than the odds.

Caveat

This piece rests on a single search-tool summary. The source list supplied alongside it does not include BlackRock, Securitize or Circle material, so the specifics above — tickers, chains, dollar figures — should be confirmed against primary filings before being treated as settled.