- Read the annual reports
- Read all the analysts reports
- Visit the stores or use their products and services
If you find that at the end of the day, the performance of the portfolio is not that good, or mediocre at best, in many cases there are various reasons.
They often have not taken into account behavioural biases, the sort of fuzzy thinking that is automatically in their mind that blocks out their rational decision.
These are the 4 behavioural biases, which we refer to them as:
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