Sequence of Returns Risk Explained

Sequence of Returns Risk Explained

The order in which you experience investment returns can matter as much as the returns themselves. Sequence of returns risk explains why two portfolios with identical average returns over 30 years can have dramatically different outcomes depending on when gains and losses occurred. Understanding this risk is crucial for anyone approaching or in early retirement.

The Math Behind the Risk

Consider two scenarios with identical average returns of 7% annually over 30 years but different sequences:

Scenario A: Strong returns in early retirement years, weak returns later.

Scenario B: Weak returns in early retirement years, strong returns later.

With no withdrawals, both scenarios produce identical ending balances. But with annual 4% withdrawals, Scenario A might sustain 30 years of retirement while Scenario B runs out of money in year 20. The sequence created the difference.

This isn't hypothetical. Historical data shows that someone retiring in 1966 faced terrible sequence luck and struggled with the 4% rule, while someone retiring in 1982 had excellent sequence luck and could have withdrawn much more.

When the Risk Peaks

Sequence risk is highest in the years immediately before and after retirement. This period, roughly five years on either side of your retirement date, represents the "retirement risk zone."

During accumulation, bad sequences don't matter much because you're not withdrawing. Your ongoing contributions actually benefit from buying at lower prices. Time heals most market wounds.

In late retirement, a larger portfolio relative to withdrawal needs provides buffer. And remaining time horizon is shorter, reducing the impact of any sequence.

But right around retirement, you need the portfolio to sustain decades of withdrawals, and a bad early sequence can permanently damage that capacity.

Mitigation Strategies

Build flexibility into your retirement plan. The ability to reduce withdrawals during market downturns dramatically improves outcomes. Even a 10-20% spending reduction during bad years can preserve a portfolio.

Consider a bond tent: temporarily increasing bond allocation to 40-50% around retirement, then gradually reducing it over 10-15 years. This cushions early-retirement volatility when it matters most.

Maintain cash reserves covering 1-2 years of expenses. Drawing from cash during downturns avoids selling stocks at depressed prices.

Delay Social Security if possible. Higher guaranteed income later reduces portfolio dependence when sequence risk has diminished.

Testing Your Plan

Monte Carlo simulations test your retirement plan against thousands of possible sequences, showing the probability of success across various conditions. This analysis reveals whether your plan is robust or depends on favorable sequences.

Pay attention to the worst-case scenarios in these simulations. A plan that succeeds 95% of the time still fails 5% of the time. Understanding what causes failure helps you build in appropriate buffers.

You can't control market sequences, but you can build plans resilient to unfavorable ones.