In short
- The top performers change from year to year. Being on top once says little about next time.
- People often buy after the big gains and sell after the falls: the reverse of what helps.
- Look at long periods, costs and how something fits your plan, not at last year's ranking.
The pattern
Every year there is a list: the best-performing funds, the hottest sector, the share everyone is talking about. Money pours into whatever is at the top. Yet the leaders often change from one year to the next. Look at a table of rankings across several years and you will see names rise and fall.
Why it happens
- Luck plays a part. Over a single year, a fund can come top because one or two bets paid off.
- The good news is already in the price. By the time a winner makes the headlines, much of the rise has happened and expectations are high.
- Conditions change. A sector that did well in one set of conditions can struggle when they end.
- Popularity has a cost. A fund that suddenly attracts a lot of money can find its original approach harder to follow.
The cost of arriving late
A made-up example. A fund rises sharply in its first year [hypothetical], when few people own it. It tops the charts and money floods in. In its second year it falls back [hypothetical]. The fund's two-year record may still look fine, but most of its investors arrived for the fall, not the rise.
What a fund earned and what its investors earned can be very different things.
What to look at instead
- Long periods, including the bad years, compared with a fair benchmark.
- Costs: the expense ratio comes off every year, good or bad (see index funds and active funds).
- Fit: your timeline, and what you already own (see what diversification actually means).
And if the tip came from a group chat, flip through seven red flags of a “tips” group first.
Educational content only. Not investment advice. Examples marked [hypothetical] are made up for teaching and do not show real or expected returns.