BlackRock Just Told Advisors Exactly How Much Bitcoin to Own

TLDR

• BlackRock’s Investment Institute formally recommended a 1–2% Bitcoin allocation for traditional multi-asset portfolios on June 23, 2026
• The guidance was sent directly to financial advisors, not just published as institutional research
• A 1% Bitcoin allocation contributes about 2% of total portfolio risk in a standard 60/40 portfolio
• BlackRock’s iShares Bitcoin Trust holds $62 billion in assets, roughly 49% of all US spot Bitcoin ETF assets
• Bitcoin is currently trading around $59,692, down over 50% from its October 2025 all-time high of $126,080

BlackRock’s Investment Institute published a research note called “Sizing Bitcoin in Portfolios” on June 23, 2026. It was sent directly to financial advisors across the US.

The note recommends that investors allocate between 1% and 2% of a traditional multi-asset portfolio to Bitcoin. BlackRock describes Bitcoin as a “complementary diversifier,” not a core holding.

The paper was authored by four BlackRock executives, including the Head of Digital Assets and the Global Head of Portfolio Research. It is the most formal sizing framework a major asset manager has put out to date.

How the Risk Math Works

BlackRock’s key argument is about risk contribution, not just return potential. In a standard 60/40 stock and bond portfolio, a 1% Bitcoin allocation contributes about 2% of total portfolio risk.

A 2% allocation pushes that risk contribution to around 5%. That is roughly the same as owning a single stock from the Magnificent Seven tech group.

Beyond 2%, the risk rises sharply. A 4% Bitcoin allocation could contribute around 14% of total portfolio risk, which would dominate the overall risk profile.

This framework gives advisors a familiar way to talk about Bitcoin in terms compliance departments and clients already understand.

Filling a Fiduciary Gap

Many financial advisors could already access Bitcoin through ETFs but had no formal framework to justify the allocation to clients or compliance teams.

BlackRock’s note addresses that directly. By framing Bitcoin like a single stock in a risk budget, advisors can now document suitability using standard portfolio language.

The guidance targets advisors and wealth managers who control trillions in retail and high-net-worth assets. Those investors previously had no formal Bitcoin benchmark to work from.

BlackRock has already added this allocation to its own Target Allocation ETF model portfolios.

IBIT’s Position in the Market

BlackRock’s iShares Bitcoin Trust currently holds around $62 billion in assets under management. That is about 49% of all US spot Bitcoin ETF assets.

The fund launched in January 2024 after the SEC approved spot Bitcoin ETFs. It pulled in billions in inflows through late 2024 and mid-2025.

After a flash crash in October 2025, the fund saw heavy outflows. Outflows in June 2026 alone reached $2.09 billion as of June 23.

Institutional investors now make up about 38% of total spot Bitcoin ETF assets, up from 24% the previous year.

Bitcoin itself is trading around $59,692. That is more than 50% below its all-time high of $126,080, reached on October 6, 2025.

BlackRock manages $13.9 trillion in total assets as of Q1 2026.

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