From 20% to 80% Illiquid Assets: How Much Venture Exposure Can a Family Office Carry?
The Goldman Sachs 2025 Family Office Investment Insights Report shows that alternatives are already a large portfolio component for many family offices. Alternatives remained a substantial share of surveyed family-office portfolios. Venture capacity should be measured after all other illiquid exposure is counted.
Goldman reported 42% alternatives exposure in 2025, including 21% in private equity, 11% in private real estate and infrastructure, and 4% in private credit.
A sample family office balance sheet shows venture capital at twenty percent, other illiquid assets at sixty percent, and liquid assets at twenty percent.
Illiquidity Has More Than One Source
A family office can carry meaningful venture exposure when it understands the whole illiquid asset base and keeps enough liquid capacity.
- Venture capital20%
- Other illiquid assets60%
- Liquid assets20%
View allocation data and assumptions
| Portfolio segment | Share | How to read it |
|---|---|---|
| Venture capital | 20% | Illiquid growth exposure requiring patience and monitoring. |
| Other illiquid assets | 60% | Operating businesses, real estate, private equity, credit, or other long-hold assets. |
| Liquid assets | 20% | Liquidity available for spending, taxes, capital calls, and flexibility. |
Illiquidity Must Fit Spending and Cash Flow
A family office can carry a high level of illiquid assets when it has stable cash flow, modest spending, reliable liquid reserves, and a long horizon. The venture percentage cannot be assessed separately from operating businesses, real estate, private equity, private credit, and other assets that may also be hard to sell. The key measure is not just illiquid NAV. It is the combination of illiquid value, uncalled commitments, and cash needs under stress.
Twenty Percent and Eighty Percent Are Different Ways of Working
| Illiquid share | Possible position | Main requirement |
|---|---|---|
| 20% | Most assets remain available for calls and spending | Basic pacing and concentration limits |
| 50% | Private assets are a major return source | Multi-year cash forecasting and carefully planned commitments |
| 80% | The balance sheet is built around long-held private wealth | Strong recurring cash flow, low forced-sale risk, and clear family policy |
These are not recommended limits. They show that the same venture cheque has a different effect depending on what else the family owns and how those assets produce cash.
Operating Businesses Can Help and Hurt
A profitable family company may provide the cash flow that supports long venture holdings. It can also be the family's largest illiquid and concentrated asset. If the company and venture portfolio depend on the same technology or economic cycle, the risks may rise together. The office should include the operating business in its liquidity and concentration map rather than treating it as separate from investments.
Net worth can overstate the capital available for venture. Consider a family with $500 million of total wealth, including a $300 million operating business and $100 million of private real estate. A $50 million venture allocation is 10% of total wealth, but it is half of the family's remaining $100 million of liquid assets before taxes, spending, or other commitments. The same headline percentage therefore creates a much larger liquidity burden than it first appears.
The operating business may generate cash, but it can also need capital during the same weak market in which venture funds make calls and exits slow down. A family should test venture commitments against the assets that can actually be sold or used for calls, not only against an appraisal of the full balance sheet.
Uncalled Commitments Are Future Illiquidity
A family may appear to have a comfortable liquid allocation while carrying large legal commitments to private funds. As calls arrive, liquid assets convert into illiquid positions. The forecast should include a period with no venture distributions and weaker cash flow from other private assets.
Ways to Support a Larger Venture Programme
- Keep a call reserve: Hold liquid assets for existing commitments.
- Spread vintages: Avoid stacking calls and exits in one cycle.
- Use secondaries selectively: They may enter later in the asset life.
- Do not commit cash already needed by family entities.
- Set a pause rule: Slow new commitments when liquid coverage falls.
A high illiquid share can be intentional. It becomes a problem when the family must sell good assets, borrow under pressure, or break commitments to meet ordinary cash needs.
Start With Total Illiquidity
For a $500 million family office, 20% illiquid assets equals $100 million, 50% equals $250 million, and 80% equals $400 million.
Goldman reported 42% alternatives exposure among surveyed family offices in 2025, which underscores why venture should be reviewed within the entire alternatives stack.
Decide How Much of the Illiquid Allocation Venture Can Use
If venture receives one-quarter. On a $500 million portfolio, allocating 25% of illiquid assets to venture produces venture allocations of $25 million, $62.5 million, and $100 million when total illiquid exposure is 20%, 50%, and 80%, respectively.
For a $500 million family office, 20%, 50%, and 80% illiquid assets equal $100 million, $250 million, and $400 million of illiquid exposure.
Illiquid-Asset Load and Venture Capacity
Venture capacity can remain real when the family pairs higher illiquidity with stronger liquidity reserves and timing discipline.
View illiquidity data and assumptions
| Illiquid assets | Dollar amount on $500M | Venture at 25% of illiquid allocation | Liquidity implication |
|---|---|---|---|
| 20% | $100M | $25M | More flexibility for timing. |
| 50% | $250M | $62.5M | Requires formal cash-flow planning. |
| 80% | $400M | $100M | Requires stronger reserve discipline. |
Protect Spending Before Expanding Venture
The family's businesses, annual spending, tax needs, and long-term plans should set the limit. A fund can supply breadth, while individual deals and secondaries allow more specific choices.
Frequently Asked Questions
Can a family office with 80% illiquid assets still invest in venture?
Yes, if liquidity is separated: The family should keep known near-term needs outside the venture portfolio and size commitments from patient capital.
Should venture be counted separately from private equity?
It should be tracked separately and together: Venture has different risk, but it still consumes the same long-term illiquidity budget.
Related Reading
venture concentration, unfunded commitments, and cash needs.