Digital assets belong in client portfolios, new 21Shares research argues
The researchers acknowledge that crypto correlations can spike during acute market stress, but argue this is a short-term phenomenon. For advisors making the case for diversification, that structural differentiation matters even when shorter-term co-movement rises.
Volatility: a shrinking objection
Volatility has historically been the most cited barrier to adoption, but the report argues this objection is increasingly dated. Bitcoin’s annualized volatility, which averaged above 80% in earlier market cycles, has compressed significantly since the January 2024 launch of US spot Bitcoin ETFs. As of the report’s publication, it sat around 30%, with recent periods reaching the low 20s.
The authors of the report, From Theory to Allocation: Managing Digital Assets in Client Portfolios, note that this sits below the volatility of several S&P 500 names already held in many client portfolios — including Tesla at approximately 44% and Palantir at approximately 51%. The implication: if high-volatility equities are permissible within fiduciary practice, a similar standard applied to Bitcoin may be defensible.
Three distinct portfolio roles
One of the more useful sections is the report’s taxonomy of digital assets by portfolio function. Treating Bitcoin, Ethereum, and Solana as interchangeable, the authors argue, is an analytical error — each occupies a different sleeve and serves a different purpose.
Bitcoin is framed as a digital reserve asset: a macro diversifier with a fixed supply algorithmically capped at 21 million coins, unconstrained by central bank policy. Its near-zero correlation to gold and low long-run correlation to equities place it alongside hard assets in an alternatives sleeve. Ethereum and Solana belong in the tech equities sleeve as digital infrastructure plays — Ethereum as a core holding within an innovation allocation, Solana as a higher-beta growth satellite for clients with elevated risk tolerance.
