Liquidity
Not all assets convert to cash equally. A publicly traded stock can typically be sold in seconds during market hours at a transparent price. A stake in a private equity fund, a direct investment in a private company, or a piece of commercial real estate may take months or years to sell. And the price realized may depend heavily on timing and market conditions. This spectrum from "highly liquid" to "highly illiquid" is one of the most important dimensions a family office tracks across its entire strategic asset allocation.
Liquidity matters for reasons beyond convenience. Families have ongoing spending needs. Lifestyle costs, taxes, philanthropic commitments, business capital calls, that require cash at predictable intervals. If too much wealth is locked in illiquid assets, a family may be forced to sell something at the wrong time or at a discount, a situation sometimes called a "liquidity crunch." A dedicated liquidity management discipline inside the family office anticipates these needs in advance rather than scrambling when they arise.
A useful way to think about it: imagine a three-generation family with two operating businesses, a portfolio of private real estate, and a range of private equity fund commitments. On paper the family is wealthy; in cash it may have limited flexibility on short notice. Family offices commonly maintain a deliberate liquidity reserve. An illustrative example might be one to three years of expected cash needs held in highly liquid instruments. As a buffer against both planned outflows and unexpected demands. The appropriate level is specific to each family's situation and requires careful, ongoing analysis rather than a one-size-fits-all rule.