Liquidity Budget Allocation
Size alternative investments around capital you can safely leave inaccessible
- Difficulty
- Moderate
- Time to result
- ~weeks to results
- Steps
- 6
- Confidence
- 96%
Begin with a liquidity budget rather than a fashionable target allocation. Estimate how much capital must remain accessible throughout the longest expected lockup, including emergency spending and foreseeable major commitments. The remainder defines the maximum pool that can safely support illiquid alternatives. Next, map each proposed investment to its underlying risk exposure and realistic liquidity terms, which may range from quarterly access to fifteen-year fund lives. Stress-test whether an unexpected capital need would force a costly secondary-market sale. The resulting allocation is therefore personal: a large institution may tolerate half its portfolio in alternatives, while an individual with a smaller portfolio may require a much lower ceiling. The mechanism turns liquidity capacity into a binding portfolio constraint.
Origin
Extracted from Masters in Business, where Ted Sidies explains that alternative allocations should be determined by each investor's liquidity budget rather than a universal percentage.
Core principles
- 01Treat illiquidity as a limited portfolio resource
- 02Preserve enough accessible capital for plausible future needs
- 03Size alternatives from the total portfolio rather than in isolation
- 04Match every allocation to its realistic lockup period
- 05Increase exposure only when wealth and time horizon support it
How to run it
- 1
Project capital needs
List expected spending, emergencies, and major commitments that could arise during the longest contemplated lockup period.
Pro tip Use a conservative scenario that includes needs beyond ordinary annual spending.
Watch out Do not assume an alternative fund will return capital on its advertised schedule.
- 2
Reserve liquid assets
Set aside enough cash and marketable securities to cover those projected needs without selling an illiquid position.
Pro tip Include a buffer for market downturns and delayed fund distributions.
Watch out Nominal wealth is not the same as accessible wealth.
- 3
Define the liquidity ceiling
Treat the capital remaining after the liquid reserve as the maximum amount available for illiquid alternatives.
Pro tip Express the ceiling both as a currency amount and as a portfolio percentage.
Watch out The maximum safe amount is not automatically the recommended allocation.
- 4
Map exposures and lockups
Classify each candidate by its stock-like or bond-like risk and by how long capital may remain inaccessible.
Pro tip Model private equity and venture funds over a ten-to-fifteen-year horizon.
Watch out Do not rely on the underlying asset's holding period alone; fund deployment and distribution add time.
- 5
Stress-test access needs
Model a scenario in which unexpected spending coincides with weak public markets and delayed alternative distributions.
Pro tip Reduce the allocation until the portfolio survives without a forced secondary sale.
Watch out Exiting an illiquid investment early may impose a substantial discount.
- 6
Allocate below the ceiling
Choose a diversified alternative allocation that remains comfortably within the tested liquidity budget.
Pro tip Begin modestly and increase exposure only after observing capital calls and distributions.
Watch out Do not copy institutional allocations without institutional liquidity.
In the wild
An investor with £5 million expects property costs and family commitments over the next decade. After reserving sufficient liquid assets and stress-testing delayed distributions, the investor determines that committing half the portfolio would create unacceptable access risk. A smaller diversified allocation stays beneath the liquidity ceiling.
→ The investor gains alternative exposure without jeopardizing foreseeable capital needs.
A £100 million institution uses only a small portion of its assets each year. Its liquid reserve can cover spending, downturns, and capital calls, leaving a much larger liquidity budget for long-duration alternatives.
→ The institution can support a materially higher alternative allocation than a smaller individual portfolio.
Common mistakes
Copying a universal allocation
A fixed alternative percentage ignores differences in spending needs, portfolio size, and time horizon.
Ignoring the full fund life
Investors may count only the years a manager owns an asset and overlook the additional time required to deploy and return capital.
Treating illiquidity as harmless
An early exit can be possible but costly, so inaccessible capital must be treated as a genuine risk.
Is it for you?
Best for
It is best for investors with substantial portfolios, long horizons, and enough liquid assets to withstand extended lockups.
Not ideal for
It is not ideal for investors who may need most of their portfolio for near- or medium-term spending.
From the transcript
“It's entirely a function of let's say, a liquidity budget.”
“if you have one hundred million dollars, you're probably not accessing most of that year to year.”
“it's not clear you want to take half of that and put it away so that you can't access it in case you need the…”
From the episode
At the Money: Lessons in Allocating to Alternative Asset Classes