Time in the market versus timing the market
Why waiting for the right moment usually costs more than the fall you are trying to avoid.
The two-decision problem
Selling before a crash looks like one smart decision. It is not. It is two decisions: when to get out and when to get back in.
The second part is far harder. When the market has fallen thirty percent and the news is terrifying, buying feels insane. That is exactly when you would have to act.
In practice, most people get out near the bottom of the fall and come back after the recovery has already happened. They end up worse off than if they had done nothing at all.
A worked example
Invest €200 every month for ten years
You never made a single timing decision. You bought in every kind of market, high and low.
The market falls 30% in year four
That year's contributions buy noticeably more units for the same €200.
The market recovers in year six
Those extra units, bought in the panic, are the ones that make the biggest difference in the end.
Why the best days are dangerous to miss
Market returns are not spread out evenly. A large share of a decade's gain comes from a handful of days.
And those days do not arrive in calm times. They cluster right around the worst days, in the space between panic and recovery. Whoever steps out to dodge the bad days usually misses the good ones too.
That is why 'stay invested' is not lazy advice. It is an acceptance of the fact that gains arrive in clusters and without warning.
What works instead
Investing the same amount at regular intervals removes the need to judge the moment. When prices are high, you buy fewer units; when they are low, you buy more — and it happens automatically.
This does not guarantee a better result than a single investment at the perfect moment. Nothing beats the perfect moment. But it protects you from the worst moment, which is far more likely.
Rebalancing once a year does a similar job: it automatically sells what has grown too much and buys what has fallen behind, without asking you for a single prediction.
Key terms in this lesson
- Dollar-cost averaging
- Putting in the same amount at regular intervals, regardless of the price.
- Rebalancing
- Bringing your portfolio back to its target proportions by selling what grew and buying what fell behind.
- Market timing
- Trying to get out before a fall and back in before a rise.
Quick check
Why is getting out of the market before a fall harder than it looks?
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