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When does a family need its own investment approach?

August 18, 2026 · Colony Family Offices

A model portfolio stops working when a family has entities, trusts and a tax position that no model can see. That is usually the moment to build one.

At a glance

The same money, two different jobs.

Lifestyle portfolio What your family lives on Horizon Sized against Volatility Liquidity Tax character Next 10 years Cash flow model Lower Must be there Mostly taxable Legacy portfolio What the next generations spend Horizon Sized against Volatility Liquidity Tax character Decades Family intent Tolerable Can be committed Trusts, foundation Separating them is a planning decision, not a portfolio decision.
Once each portion has a job, the allocation follows from it rather than from a risk tolerance score.

Your family needs its own investment approach at the point where a model portfolio can no longer account for what makes your circumstances unusual: the entities, the trusts, the tax position, and whatever concentration built the wealth in the first place.

Model portfolios are not bad. They are efficient, disciplined and appropriate for most investors. They stop fitting for a specific reason, which is that they are built for an account rather than for a family, and at a certain point your family's money is not sitting in an account.

The signs a model has stopped fitting

Concentration. A single holding, often the business that created the wealth, dominates the balance sheet and cannot be unwound in one step. Everything else in the portfolio is really a hedge against that one position, whether or not it was designed that way.

Multiple tax characters. Taxable accounts, retirement accounts, grantor and non-grantor trusts, and a foundation all hold assets that are taxed differently. The same security produces a different after-tax result depending on which of those it sits in, and a model cannot see the difference.

Different time horizons inside one family. A portfolio funding a lifestyle and a portfolio funding a legacy are not the same problem. Held together and allocated as one, they are usually allocated correctly for neither.

Liquidity that has to be planned. Capital calls, tax payments and distributions arrive on a schedule the market does not accommodate. A family that has to sell into a bad quarter because a payment came due has an allocation problem disguised as a timing problem.

Someone else already owns part of the picture. If a trustee, a foundation board or a business partner has a say, the portfolio has constraints a risk questionnaire will never ask about.

How we build portfolios at Colony

Portfolios are purpose-built around your family's goals, customized rather than standardized. Two decisions define the approach.

Allocation is driven by forward-looking return expectations, not historical performance. What an asset class returned over the last decade is a poor guide to what it is priced to return over the next one. Building an allocation from trailing numbers means buying whatever has already worked, which is a reliable way to be late.

Every decision is evaluated through a tax-aware lens. For families of significant wealth the after-tax result is the only one that matters, and it is frequently different from the pre-tax one. That means asset location as well as asset allocation, and it means weighing the tax impact at the point a decision is made rather than reviewing it in December when the options have narrowed.

We run an independent, open-architecture platform. That means direct access to limited partnerships and negotiated minimums a single family would rarely reach on its own, without being tied to proprietary product. Independence here is structural rather than aspirational: we are not compensated through commissions, so there is no product whose sale improves our position.

Bifurcating the portfolio

One pattern recurs often enough to name.

Families frequently benefit from splitting investable assets into a lifestyle portfolio and a legacy portfolio. The lifestyle portion supports cash flow needs and can be allocated with less volatility, sized against long-term simulation rather than a rule of thumb. The legacy portion is invested for the generations that will actually spend it, which usually means a longer horizon and more tolerance for the volatility that comes with it.

Once separated, both can be allocated honestly. A generation-skipping trust with a fifty-year horizon should not be invested like the account paying next year's taxes, and it will be if the two are held as one number.

This is also where the planning conversation and the investment conversation stop being separable. Deciding how much belongs in each portion is not a portfolio decision. It is a question about what your family intends, answered with cash flow modeling.

What about alternatives?

Families at this level are usually offered private investments, and the question is rarely whether they are worth holding. It is whether your family can afford the illiquidity and whether the access is real.

Illiquidity is a planning question before it is an investment one. Capital calls are commitments, and a family that has committed more than its liquid position comfortably supports has created an obligation that will eventually collide with something else. Modeling that against the rest of the balance sheet is the work.

Access is the other half. Direct limited partnership access and negotiated minimums matter because they change what is actually available, and because a fund of funds layered on top of a fund changes the arithmetic considerably.

The question underneath

The investment question is rarely what your family should own. It is what this money is for.

Answering that first is what makes the allocation obvious. Money that funds a lifestyle has one job. Money intended for grandchildren has another. Money committed to a foundation has annual distribution requirements that set a floor on what it has to produce.

Once each portion has a job, the allocation follows from it rather than from a risk tolerance score. That is why at Colony the investment conversation begins as a planning conversation, and why the same team holds both.

When a model is still the right answer

It is worth saying the reverse plainly.

If your family's wealth sits in one or two accounts, has no meaningful concentration, does not span entities or trusts, and has no near-term liquidity obligations, a well-built model portfolio is likely to serve you as well as anything custom, at lower cost. Bespoke construction is not automatically better. It is better when there is something specific for it to account for.

The point at which that changes is usually structural rather than numerical. It is when the money stops being one pool with one purpose and becomes several pools with several, held by different owners, taxed differently, and needed at different times.

If that describes your family, a model is being asked to solve a problem it was never built for.

Concentration is the hardest case

Most families who reach this point do so holding something large.

It might be the operating business, restricted stock from a career, or a position that simply compounded for thirty years and became most of the balance sheet without anyone deciding it should. Whatever the origin, it creates the same problem: the risk your family is carrying is no longer a portfolio question, and it cannot be solved inside the portfolio.

Unwinding it is a sequencing exercise across several years, not a trade. The gain has to be recognized against a plan for what else is happening in those years, because the tax impact of a sale is often larger than any allocation decision made around it. Charitable vehicles, gifting and trust funding can absorb part of the position at better effective rates than an outright sale. Where there is a real intention to give, that is usually the most efficient path, and it has the advantage of doing the philanthropic work at the same time.

None of that can be planned by an advisor who only sees the brokerage account. It needs the estate plan, the tax position and the family's actual intent in the same room, which is the argument for holding all three in one team rather than three.

What cash flow modeling is actually for

Families sometimes treat cash flow projection as a formality. It is closer to the centre of the work than that.

Long-term simulation is what tells your family how much has to be liquid, how much can be committed, and how much genuinely has a multi-decade horizon. Without it, allocation becomes a guess dressed up as a risk tolerance. With it, most of the hard questions answer themselves, because you can see what each portion of the money is being asked to do and when.

It also changes the conversation in a bad market. A family that knows its next ten years of obligations are already funded behaves differently from one that does not, and the behavioral difference is usually worth more than the allocation difference.

What a review looks like

Not a performance report read aloud.

The useful version starts with what changed in your family, then asks what that means for the portfolio. A liquidity need moved. A trust was funded. A child's circumstances shifted. A state of residence changed. Each of those changes the allocation, and none of them appears on a benchmark comparison.

Performance still matters and still gets reported, consolidated across accounts, entities and trusts rather than statement by statement. But it is the second conversation, not the first, because it measures how the plan did rather than whether the plan is still right.

Where to start

The first question is not what your family should be invested in. It is what the money is already committed to.

Mapping obligations, capital calls, tax payments, distributions, gifting plans, against liquidity is usually enough to show whether the current allocation fits. Where it does not, the mismatch is generally in one of two places: too much committed to illiquid positions relative to what the next few years require, or a single portfolio being asked to serve two horizons at once.

Both are fixable, and neither is fixed by changing managers. At Colony the investment conversation starts there rather than with a product, because an allocation built without that picture is solving the wrong problem accurately.

Our perspective.

Notes on the questions families are working through right now.

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