Five investment mistakes to avoid

Posted 9 March 2026 by Faith Liversedge

Investing can be one of the most effective ways to grow your wealth over time, but even the most experienced investors can make missteps. The good news is that most of these are easy to avoid once you know what to look out for.

1. Chasing short-term performance

When markets rise and fall, it’s tempting to react quickly, buying what’s gone up or selling what’s fallen. But short-term movements don’t always reflect long-term potential. Successful investing is more about staying invested and sticking to your plan than reacting to headlines.

2. Putting all your eggs in one basket

Concentrating your money in a single company, sector or region can expose you to unnecessary risk. Diversification - spreading your investments across different assets - helps smooth returns and reduces the impact of market volatility.

3. Ignoring risk levels

Every investment carries some level of risk, and that’s not necessarily a bad thing. The key is ensuring your investments match your personal goals and comfort level. Too much risk can cause sleepless nights; too little may mean your money doesn’t keep up with inflation. The risk you are comfortable with may change over time. 

4. Forgetting to review your portfolio

Markets change, and so do your circumstances. Checking in on your investments regularly - perhaps once or twice a year - helps you stay aligned with your goals and rebalance if needed. Small adjustments can keep your portfolio on track without overreacting to short-term noise.

5. Neglecting tax efficiency

It’s not just where you invest that matters, but how. Making use of tax-efficient wrappers such as pensions and ISAs can help your money grow faster by reducing the amount lost to tax. Even small savings can add up significantly over time.

Remember: Investing isn’t about predicting the future - it’s about preparing for it. If you’re unsure where to start, a financial adviser can help you build a plan that suits your needs and goals. The resources within these pages can help you find a financial adviser in your local area.

Quick recap:

  • Keep a long-term view - avoid reacting to short-term market moves.
  • Spread your investments to reduce risk.
  • Match your risk level to your goals and comfort zone.
  • Review your portfolio regularly.
  • Use tax-efficient accounts to help your money go further.

 

This article reflects our understanding of current legislation, which may change. While we can provide information, we can’t give you advice and therefore we recommend you seek professional advice before making any financial decisions. Investments can go down as well as up, and you may not get back the amount invested. Tax treatment depends on individual circumstances and available reliefs may vary.