Sequence Risk When 60%+ of Retirement Is One Stock

Sequence-of-returns risk is the textbook retirement problem: two retirees with the same average return over 30 years can end with wildly different outcomes based on when the bad years hit. Bad returns in the first decade of retirement, combined with withdrawals, can wipe out a portfolio that would otherwise have lasted.

That risk becomes catastrophic when 60% or more of the retirement portfolio is a single concentrated stock. A diversified 60/40 portfolio might see a 25% drawdown in a bear year. A concentrated single-stock position, especially tech, can see 50% to 70% drawdowns, and those drawdowns are correlated across the rest of the portfolio because the company’s weakness often spreads to the sector.

This article lays out the math, the hedging options, and the practical de-concentration paths for retirees walking in with heavy single-stock exposure.

The math of a 40% drawdown in year two

Start with a $3M retirement portfolio, 60% concentrated in one tech stock ($1.8M) and 40% in diversified assets ($1.2M). The retiree plans to withdraw $120,000 per year, a conservative 4% rate.

Year 1: Market is flat, portfolio still $3M after withdrawal of $120K. Remaining: $2.88M. Year 2: Concentrated stock drops 50%, diversified drops 20%. Concentrated: $900K. Diversified: $960K. Total: $1.86M. After $120K withdrawal: $1.74M. Year 3: Stock recovers 30%, diversified recovers 10%. Concentrated: $1.17M. Diversified: $1.056M. Total: $2.23M. After withdrawal: $2.11M.

Compared to a diversified 60/40 portfolio that might have drawn down to $2.4M after two years and recovered to $2.55M by year three, the concentrated retiree is $440K behind by year three. That gap compounds over the next 25 years.

The problem isn’t the drawdown itself, markets recover. The problem is that withdrawals during the drawdown convert paper losses into permanent losses. Every dollar withdrawn at the bottom can’t participate in the recovery.

Why concentrated stocks amplify the problem

Three structural reasons:

Single-company risk. Fraud, competitive disruption, regulatory action, or bad management can sink a single stock while the broad market rises. The 2022-23 drawdowns in Meta (-75% at trough) and Netflix (-70%) happened during a period when the S&P 500 fell only 25%.
Correlated withdrawal pressure. If the stock drops because the company is struggling, your RSU income from ongoing vests also drops. You can’t refill the bucket as easily.
Liquidity and trading constraints. Executives with 10b5-1 plans, blackout windows, or large positions face slower liquidation. The inability to exit quickly during a drawdown means the retiree rides the drawdown by force.

The hedging playbook

Four tools can dampen sequence risk without full liquidation:

Collars. Buy a put at 80-85% of current stock price, sell a call at 115-120% of current price. Cost is near zero. The collar caps the downside at 15-20% and caps upside at 15-20%. For a retiree, that floor is what matters.

Protective puts. Buy a put at 90% of current price with a 6-12 month maturity. Annual cost is typically 2-3% of position value. Pure insurance, no upside cap. Expensive but simple.

Exchange funds. Contribute the concentrated stock to a §721 exchange fund. After 7 years, receive a diversified portfolio in return, with original basis carried forward. No current tax. Illiquid for 7 years and requires $1M+ minimums.

Staged selling. Pre-commit to selling a fixed percentage quarterly, regardless of price. Behavioral mechanism against “waiting for recovery.” A 4% quarterly sale on $1.8M = $72K per quarter, liquidating in 6-7 years.

The 4% rule doesn’t apply

Bill Bengen’s 4% safe-withdrawal-rate rule was built on a diversified 60/40 portfolio across 115 years of U.S. market data. The math doesn’t extend to single-stock concentration. Academic work suggests the safe rate for a single-stock portfolio is more like 2.5-3%, and that’s assuming the stock is in a broad index like the S&P 500. A single tech stock is even riskier.

For a retiree with $3M and 60% concentration, treating $90K-$95K as the safe withdrawal is more realistic than $120K. The alternative is accepting a meaningful probability of running out of money.

De-concentration timeline

A common target: reduce single-stock concentration to 15-20% of portfolio within 5 years of retirement. For someone retiring at 60 with $1.8M of stock, that means liquidating $900K-$1.2M over 5 years. Tax-efficient approaches:

Staged selling (straight capital gains, long-term rate)
Direct-indexing losses from taxable to offset gains
DAF donations (30% AGI limit on appreciated stock under IRC §170)
Gifting to children (shifts basis, freezes estate value)
Charitable remainder trust (income stream + charitable deduction + inside-trust diversification)

Each path has costs. Staged selling triggers capital gains. DAF donations are irreversible. CRTs lock up principal. The right mix depends on charitable intent, family situation, and expected return on liquidated proceeds.

The IRMAA and tax-bracket layer

Selling $200K-$300K of long-term appreciated stock in a single year can push a retiree into the 20% federal capital gains bracket plus 3.8% NIIT (total 23.8%), and two years later into a higher Medicare IRMAA tier. Spreading sales across multiple years keeps each year’s income inside the 15% cap-gains bracket and avoids IRMAA escalation.

Rough thresholds for 2025: 0% cap gains up to $48,350 single / $96,700 married; 15% up to $533,400 single / $600,050 married; 20% above. IRMAA starts at $106,000 MAGI single / $212,000 married.

Frequently asked

What concentration level is “safe” in retirement? Most planners target under 20%. Some argue under 10% for assets with single-company risk. The right number depends on the total portfolio size, a retiree with $10M can absorb more single-stock risk than one with $2M.

Should I just sell everything at retirement? Rarely optimal. A full liquidation triggers the entire capital gains bill in one year at 20% + 3.8% NIIT plus state. Staging over 5-7 years lets you control the bracket.

Does a collar count as a constructive sale under IRC §1259? Not usually, as long as the collar strikes are wide enough. A tight collar (95%/105%) might trigger §1259 constructive sale treatment. Wide collars (85%/115%) generally don’t.

What if the stock pays a dividend? Dividend income is part of the sequence risk calculation. A 2% dividend on $1.8M provides $36K of annual income, which reduces the required withdrawal from other assets. But dividends can be cut during drawdowns, tech companies historically have thinner dividend floors than utilities or consumer staples.

How does this interact with Social Security claiming? Delaying Social Security to 70 adds roughly 8% per year of benefit from FRA. For a retiree with heavy single-stock exposure, the inflation-indexed SSA income functions as a bond replacement and reduces the withdrawal pressure on the stock portfolio. The 2025 wage base of $176,100 caps the primary insurance amount calculation but retirees near this level already qualify for maximum benefit.