What stock/bond allocation should you have at 35?
There's no single "right" stock/bond split at 35 — it's a trade-off between growth and stability. Replayed through 62 market histories (1928–2024) on a retirement portfolio, a higher stock allocation raises the median result but widens the range of outcomes. Here's the honest picture across allocations.
Monte Carlo outcomes by allocation
Ending balance (today's dollars) across 62 market histories (1928–2024) for a retiree drawing a moderate income. The 10th percentile is the "bad luck" case; the 90th is "good luck":
| Allocation | Downside (10th %ile) | Median | Upside (90th %ile) |
|---|---|---|---|
| 20% / 80% | $0 | $0 | $604,252 |
| 40% / 60% | $0 | $49,378 | $999,717 |
| 60% / 40% | $0 | $315,857 | $1,564,236 |
| 80% / 20% | $0 | $755,684 | $2,439,206 |
| 100% / 0% | $0 | $1,587,838 | $3,592,419 |
How to actually choose
The table shows the trade-off; your allocation should follow from your situation, not a single "best" number:
- Long horizon favors stocks. Over 20–30+ years, inflation is a bigger threat than volatility — too few stocks can quietly fail to keep up. That's why many long retirements still hold 50–70%+ in stocks.
- Sequence risk favors some bonds near retirement. A bond/cash buffer (a "bond tent") lets you avoid selling stocks into an early downturn — the most dangerous moment for a portfolio.
- Match it to your nerves and your floor. If guaranteed income (Social Security, a pension) covers your essentials, you can hold more stocks with the rest. If the portfolio must cover everything, more bonds buy stability.
A common age-based rule of thumb is "110 minus your age in stocks," but it's only a starting point. These figures assume a retiree with modest Social Security drawing a moderate income; a rule of thumb can't see your full picture — model yours and read the year-by-year projection. The Simulation Tools then stress-test it against real market history.
Why 110 minus your age is a starting line, not an answer
Rules like 110 (or 120) minus your age in stocks earn their keep by being simple: they anchor you to a sensible neighborhood and nudge the mix more conservative as the years pass. At 35 they point most people toward a stock-heavy portfolio, which broadly fits a horizon this long. But a rule built for the average person cannot see your particular situation.
Two things it ignores tend to matter most:
- a guaranteed-income floor — Social Security, a pension — that covers part of your future spending lets you hold more stocks with the rest, because that floor absorbs shocks the portfolio would otherwise have to
- your own willingness and ability to stay invested through a deep decline, which no formula can measure
Treat the number as a default to adjust from, not a verdict. Someone with a stable income and a long runway might reasonably sit above it; someone who sold in the last crash might sit a little below and still come out ahead by finally staying the course. The formula gets you into the right room; your circumstances pick the chair.
Common questions
What is the best stock/bond allocation at 35?
There isn't one "best" — it's a trade-off. In this stress test, more stocks raise the median outcome but widen the range of results. A middle allocation (often 50–70% stocks) balances growth against stability; the right choice depends on your horizon, other income, and risk tolerance.
How much should I have in stocks at 35?
A common rule of thumb is "110 minus your age" in stocks (about 75% at 35), but it's only a starting point. Over a long horizon, holding enough stocks to outpace inflation matters as much as limiting volatility.
Is 100% stocks too risky at 35?
It has the highest expected growth but the widest swings, including deep drawdowns. Whether that's "too risky" depends on your time horizon and whether guaranteed income covers your essential spending — if it does, you can tolerate more stock exposure.