What is sequence-of-returns risk?

It is the risk that the order of your returns hurts you, even if the average is fine. A retiree who is selling assets to fund spending is badly exposed: a steep drop in the first years of retirement forces selling into the decline, permanently shrinking the base the rest of the plan compounds on. The same returns in a kinder order would have been survivable.

Why can't a target-date fund handle decumulation?

A target-date fund holds one blended allocation for everyone on the same retirement date. It can't separate the money you need to spend in the next two years from the money that can stay invested for twenty. That separation is the entire point of bucketing, and a single blended sleeve structurally cannot provide it.

Bucket Math for Retirees: Why One-Size Decumulation Fails

In the saving years, the math is forgiving. You add money over time, and a bad year is almost a gift — you buy more at lower prices. The order in which returns arrive barely matters; only the long-run average does.

Retirement inverts that. Now you are withdrawing. And the moment you start selling assets to fund your life, the order of returns stops being a footnote and becomes the whole story.

Sequence-of-returns risk, in one example

Two retirees earn the exact same returns over their first decade — same numbers, same average. The only difference is the order. One gets a steep decline in years one and two; the other gets those same bad years near the end.

The first retiree can run out of money while the second is comfortable. Identical average return, opposite outcome.

When you’re withdrawing, a crash early in retirement forces you to sell into the decline — locking in losses on the base that the rest of your plan has to compound on.

That is sequence-of-returns risk, and it is the defining hazard of decumulation. It is also invisible in the accumulation-era advice most people carry into retirement.

Why a single blended allocation can’t solve it

A target-date fund — and most one-line “retirement allocations” — gives everyone retiring around the same year the same blended mix. It is a genuinely good default for saving. For spending, it has a structural blind spot: it cannot tell the difference between the dollars you need next year and the dollars you won’t touch for two decades. It holds them in the same pot, at the same risk level, and asks you to sell from that one pot whenever you need cash — including in the middle of a crash.

That is exactly the situation sequence-of-returns risk punishes.

The bucket idea

Bucketing attacks the problem by separating money by when you’ll spend it:

A near-term bucket — the next couple of years of spending, held in something stable. This is what you draw from, so you’re never forced to sell stocks during a downturn to buy groceries.
An intermediate bucket — money for the medium term, in moderate-risk assets that can recover from a bad stretch before you need it.
A long-term bucket — the dollars that have a decade or more to work, kept growth-oriented because they can ride out volatility.

When markets fall, you spend from the stable bucket and leave the growth bucket alone to recover. You refill the near-term bucket from the others in calmer periods. The structure doesn’t promise higher returns — it changes which assets you’re forced to sell, and when. That is precisely the lever sequence risk turns.

Why this is personal in a way a fund can’t be

How big each bucket should be depends on things a one-size fund never sees: how much of your spending is already covered by pensions or other guaranteed income, how much flexibility you have to trim spending in a bad year, how much you intend to leave behind. Two people retiring the same year can need very different structures. A blended glide path, by design, gives them the same one.

This is the gap the Decumulator work here is built around — illustrative, category-based bucket structures you can study against the actual history of bad sequences, with the backtest math open for inspection. Hypothetical, historical, and yours to check; not a personalized recommendation.

If you want a starting read on how your own thinking maps to these ideas, the free ETF Portfolio IQ Score takes a few minutes and asks for no account balances: etfwealthiq.com/iq-score.