The interesting question for a family office isn't which digital assets to hold. It's how much — and what that number is measured against.
Digital assets present an unusual problem for a discipline-led investment office: the technology is genuinely new, but the underlying question — how much of the portfolio should sit in a volatile, non-cash-flowing asset class — is an old one, and the old tools for answering it still apply.
The starting point is a defined risk budget, set before any position is taken, not backed into after a rally makes the allocation look obvious in hindsight. That budget is sized as a fraction of total assets the office is prepared to see go to zero without altering its other commitments — a conservative framing, but the correct one for an asset class still working out its long-term custody, regulatory, and valuation norms.
Within that budget, concentration matters more than selection. A small number of established, liquid protocols and treasuries is easier to underwrite, monitor, and — critically — custody securely than a long tail of smaller positions. Custody itself is treated with the same seriousness applied to any other asset: key management, operational safeguards, and succession planning are not afterthoughts bolted on once a position exists, but preconditions for taking one.
Rebalancing follows a rule, not a mood. Positions are trimmed or added to relative to the risk budget on a schedule, which removes the temptation to let a winning position quietly grow into a much larger share of the portfolio than was ever intended — the single most common way disciplined allocations become undisciplined ones.
None of this makes digital assets a smaller commitment intellectually than any other discipline. It makes them a bounded one — which, for a family office, is the entire point.