FTSE 100: three things I wish I’d known when I was 20

These three areas could improve an investor’s long-term performance when investing in the FTSE 100 (INDEXFTSE: UKX).

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

While making mistakes can be a valuable learning curve for every investor, they can prove costly in the short run. With that in mind, here are three investment lessons which I wish I had known at the very start of my investing career. Following them could have helped boost my portfolio returns.

Bear markets always come around

Deciding when to buy shares is one of the most difficult aspects of investing. The truth is that the vast majority of investors feel more comfortable buying when the outlook for the economy is positive. Doing so seems to be less risky, since the future may appear to be clearer and a path to profitability may seem much easier than it is during a recession.

However, the fact is that bear markets are inevitable. They have always taken place, and always will do. As such, it can make sense for an investor to wait for more difficult periods for the stock market before buying. Doing so can lead to far lower buying prices than investing during a bull market. In the long run, this can mean significantly higher profits.

The reward for taking risks could be worth it

For an investor with a long-term outlook, taking high risks can be a worthwhile strategy. Clearly, it can mean a difficult short-term period, since volatility may be high and paper losses are never a pleasant experience. However, in the long run, taking more risks can lead to higher rewards.

For example, mid- and small-cap shares generally offer higher rewards than their larger counterparts. They may also have lower dividend yields and greater volatility, but for an investor with a more-than-10-year time horizon, they can be a worthwhile investment. Although taking too much risk is clearly not a wise move, not taking enough risk can lead to disappointing real returns in the long run.

Take a view (if you have time)

While diversification is a sensible move, in some cases it is all too easy to become over-diversified. This essentially means that a portfolio moves in a very similar fashion to the wider index, so there is the danger of it becoming akin to a tracker fund.

Often, investors who have experienced a difficult period with their portfolios will seek to diversify as much as possible. While this can reduce risk, it can also mean lower returns as well as higher commission costs. For smaller portfolios, the latter can be a major challenge.

As a result, for investors who have time to research stocks it may be worthwhile maintaining a degree of diversification, but not so much as to dilute the impact of shrewd decision-making. Doing so may mean higher volatility than the wider index and the potential for higher losses. But for investors who are able to hold on to their shares for the long run, the rewards could be worth the risk.

Peter Stephens has no position in any of the shares mentioned. The Motley Fool UK has no position in any of the shares mentioned. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

Asian man looking concerned while studying paperwork at his desk in an office
Investing Articles

A stock market crash feels like it might be imminent

Conflict in the Middle East means a stock market crash feels like a real possibility right now. But being ready…

Read more »

Rolls-Royce's Pearl 10X engine series
Investing Articles

Should I buy Rolls-Royce shares as they march ever higher?

Rolls-Royce is making billions of pounds a year and looks set to do even better in future -- so what's…

Read more »

Smiling family of four enjoying breakfast at sunrise while camping
Investing Articles

£1,000 buys 110 shares in this UK beverage stock that’s smashing Diageo 

Shares of Tanqueray-maker Diageo are languishing at multi-year lows. So why is the stock behind this tonic water brand on…

Read more »

UK financial background: share prices and stock graph overlaid on an image of the Union Jack
Investing Articles

What next for Aviva shares after a cracking set of 2025 results?

Aviva achieving its 2026 financial goals a year ahead of schedule has got to be good for the shares... oh,…

Read more »

This way, That way, The other way - pointing in different directions
Investing Articles

Should I buy stocks or look to conserve cash right now?

In a market dealing with AI uncertainty and conflict in the Middle East, should investors be looking for stocks to…

Read more »

Investing Articles

Here’s how many British American Tobacco shares it takes to earn a £1,000 monthly second income

Is an AI-resistant business with a 5.38% dividend yield a good choice for investors looking for a second income in…

Read more »

Black woman using smartphone at home, watching stock charts.
Investing Articles

1,001 Barclays shares bought 12 months ago are now worth…

Barclays shares have delivered excellent returns over the last year. But can the FTSE 100 bank keep outperforming? Royston Wild…

Read more »

Two business people sitting at cafe working on new project using laptop. Young businesswoman taking notes and businessman working on laptop computer.
Investing Articles

Get started on the stock market: 3 ‘safe’ shares for beginner UK investors to consider

Kicking off an investment portfolio on the stock market may seem like a scary prospect. Mark Hartley details a few…

Read more »