A client once arrived with a portfolio that read like a hall of fame — each fund the number-one performer of the year he bought it. He had done exactly what feels sensible: seen a winner, and bought it. Yet his returns were mediocre, because by the time a fund tops a table, the run that put it there is usually behind it. He had spent years buying yesterday’s champion at tomorrow’s disappointment, again and again, always a step behind.

This is one of the most human errors in investing, and one of the costliest. We are wired to chase what has just done well — and markets rarely reward it.

By the time a fund is a ‘top performer,’ you are usually buying its past, not its future.

Why last year’s winner disappoints

Performance rankings look backward, but you can only invest forward. What tops a chart is often whatever style, sector or bet happened to suit the year just gone — and those things rotate. Buy the winner and you are frequently buying an asset near the top of its cycle, at its most expensive, just as the wind changes. Repeated across a decade, this quiet habit of arriving late does more damage than any single bad market.

What we watch instead

We don’t try to pick tomorrow’s topper, because no one reliably can. We build a portfolio to a plan and hold it through the cycles, rebalancing on a rule — which, usefully, does the opposite of chasing: it trims what has run hot and adds to what has lagged, so you are gently selling high and buying low rather than the reverse. We judge a holding by whether it still fits your plan, not by whether it topped last year’s list. Consistency of process, not last year’s ranking, is what compounds.

The next dazzling one-year number will arrive on schedule, and it will be tempting. Invest for the cycle ahead, not the one just gone. In twenty years, the investors who did best were rarely the ones who owned last year’s winner. They were the ones who stopped switching to it.