Home Bias in Equity Portfolios

When investors choose a portfolio of stocks or securities to invest in, they have several options. They can choose between both local and international markets to select their investments. It gives them great flexibility when it comes to building a diversified portfolio. Sometimes, however, investors may allow bias to influence their decisions when selecting the market where they place their investments.

What is Home Bias?

The term home bias represents investors’ tendency to prefer domestic investments. In this process, they ignore the certainty they can get from diversifying into foreign markets. There are some specific types of investors that demonstrate this bias compared to others. Usually, these investors have faced limitations when it comes to investing in foreign markets. Therefore, they base their decision to invest locally on those experiences.

In the present, investing in foreign markets is seamless. There are no significant limitations that investors may face. However, some investors still allow their bias towards local markets to influence their decisions. Investors are also more likely to choose local investments as they may worry about the prospect of entering unknown markets. Either way, they lose the opportunity to increase their returns and build a diversified portfolio of investments.

Home bias in equity portfolios can also exist when investors prefer local equities compared to foreign ones. This bias exists for investors that are active in the stock market. Even when investors invest in foreign markets, their portfolios comprise a substantial portion of local equities. It also constitutes home bias in equity portfolios.

How does Home Bias work?

Having a diversified portfolio of investments is crucial for investors. It means they must include different types of investments in their portfolios. These may consist of stocks, debt instruments, real estate, commodities, etc. On top of that, they must not concentrate all their investments in the same market. Due to the possibilities available, investors can build a diversified portfolio by investing in local and foreign markets.

However, some investors may not believe in investing in foreign markets. As mentioned above, this bias may come from their fear of entering unknown markets or previous experiences. Due to this, investors may focus all their investments on their local markets. This bias increases their risks associated with having a portfolio that focuses on a specific market. On top of that, investors also lose the opportunity to increase their returns.

Why is Home Bias important?

Home bias is crucial for investors as it forces them to concentrate on a local market. Due to this, they face many risks associated with having an undiversified portfolio. As mentioned, some investors may also be active in foreign markets. Due to home bias, however, they may still dedicate a large portion of their portfolio to local investments.

Identifying and avoiding home bias is also crucial for investors. Any investor active in the local markets can easily avoid this bias by considering both local and foreign investing options. Home bias can also cause investors to neglect better investment opportunities. In some cases, however, this bias can also be beneficial for investors with the returns they can get on local investments.


Home bias influences investors to concentrate their investments in local markets. By doing so, they neglect the investment opportunities available in foreign markets. This bias may arise from investors’ past experiences or fear of entering unknown markets. Home bias can lead to lost returns and undiversified portfolios.

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