Mitigating Behavioral Biases in Equity Investing

As an equity portfolio manager, you are aware that the market often deviates from intrinsic value due to investor psychology and behavioral biases. In a recent meeting, your team discussed the implications of overconfidence and its potential effect on stock selection. Overconfidence manifests when investors overestimate their ability to predict market movements or undervalue risks associated with their investments. Considering these behavioral tendencies, which of the following strategies would best mitigate the risks associated with overconfident investment approaches?