The lazy 80-20 Investor – how often should you change funds?

I was asked the following question by an 80-20 Investor member:

How often should I review my portfolio and make changes? Every month, or should I wait for 3 months or 6 months? What's the best strategy?

My response was as below:

"Hi 

80-20 Investor is not prescriptive so the answer to how often you review your portfolio is down to the individual. However, the more regularly you review the more time you spend out of the market (if you use unit trusts) and the higher the trading charges (if you use investment trusts and ETFs).

So it is important to strike a balance. If you read through my reviews of my £50k portfolio, although the articles are monthly, you will see that often I don’t change anything or only make minimal changes.