Risk
John Stoj · October 7, 2026
“If your portfolio lost 20% in a month, would you sell everything, sell some, do nothing, or buy more?”
You’ve probably answered some version of that question. A handful of check boxes later, a label appears (aggressive, moderate, conservative) and then a number: 80/20, 60/40, 40/60. Portfolio designed. Next.
Here’s my problem with it. The questionnaire measures one thing, how you feel about volatility on the day you answer it, and then uses that to settle a completely different question: when will this money be needed, and what happens if it isn’t there?
Those are not the same question. They aren’t even close relatives.
I know, because I’ve been the subject of the experiment.
A professional with a high tolerance for risk
In 2008, I worked in finance, and my own retirement accounts were invested 100% in equities. Any questionnaire would have labeled me aggressive, and I wouldn’t have argued. Between a high savings rate and a hands-off approach my work more or less required, I sat through the entire 50% decline in stocks between October 2008 and March 2009.
By mid-2009, I was convinced the aftereffects would last for years. I pulled nearly all of my non-retirement money out of the market to start a business, and I moved my retirement accounts from 100% equities to what I called, “conservative,” a 60/40 allocation. That’s where they stayed for most of the next decade.
Ask me how that worked out. Since March 2009, the S&P 500 is up over 600%.
Now run the before and after through a questionnaire. In 2008, I’m aggressive. In 2009, I’m conservative. Same person. Same retirement. The money was still decades from being needed, and nothing about that obligation had changed in any way that mattered. The only thing that moved was how I felt, and how sure I was about a future I couldn’t see.
I’m not telling this story to argue that I should have stayed at 100% equities. A plan built around what that money was for might well have landed me at 60/40 anyway. The difference is that I would have known why. Instead, I changed a portfolio because of a feeling, and then called it a decision.
Three questions that sound like one
When someone asks, “how much risk can you take?” they’re usually mashing together three different questions:
How does volatility feel? That’s risk tolerance. It’s emotional, personal, and it moves with the headlines (see above).
How much stress can the plan actually absorb? That’s risk capacity. It’s structural. A household with strong cash flow, flexible spending, and a long runway can absorb more than a household with fixed bills coming due soon, no matter how either one feels about it.
When is the money needed, and what happens if it isn’t there? That’s the time horizon, and, more precisely, the character of the obligation behind it.
A questionnaire answers the first one and quietly treats it as the answer to all three.
Two bills, same date
Take two expenses, both due in six years. One is a tuition payment that arrives in September whether the market cooperates or not. The other is a kitchen remodel that can slide a year, or shrink, or disappear.
Same date. Same dollar amount, if you like. Risk tolerance can’t tell them apart. A time horizon alone can’t either. But the tuition is essential, inflexible, and expensive to miss, and the remodel is none of those things. They deserve different assets, and what separates them is timing plus certainty, flexibility, inflation sensitivity, and consequence. That’s the whole reason Asset Life Matching looks at five dimensions instead of one.
So does tolerance matter at all?
Of course it does. Investors are human, and a plan you abandon in the middle of a bad market isn’t a plan. Tolerance helps decide whether you’ll stick with the structure.
But tolerance decides whether you’ll stay. Capacity and the obligations decide what you’re staying in.
Here’s the part I find most useful. Matching doesn’t change how anyone feels about volatility. It changes how much volatility is sitting next to money you need. When next year’s spending is sitting in something stable and liquid, and a defined-maturity holding is lined up for the house in six years, a decline in the long-term growth assets is a problem for the part of the plan that has time to recover. It stops feeling like a threat to everything.
Clarity turns out to be remarkably good at changing behavior.
The short version
Risk tolerance tells me about you on a given Tuesday. A time horizon tells me about the money. I’d rather build around the money.
This resource is part of the Asset Life Matching library. Start with What Is Asset Life Matching? →
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Further reading
Cullen Roche, Pragmatic Capitalism, May 2016. Roche puts rough durations on cash, bonds, and stocks so savings can be matched to how long the money can stay invested.
Christine Benz, Morningstar, October 2023. Benz builds the allocation from anticipated spending rather than from a risk questionnaire.
I chose these links because I think they’re worth reading. I have no financial relationship with the authors or their firms, and I’m not paid for them. Their views are their own. Cullen Roche founded Discipline Funds, which sells investment funds. I have no relationship with Discipline Funds.
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