Reverse home bias: Why Southeast Asia’s digital investors may be diversifying in the wrong direction

A growing concern in investing is the potential for investors to become too familiar with a limited number of global companies, leading to what some analysts call "reverse home bias." This phenomenon may be more pronounced among digitally native investors in Southeast Asia, who may be gravitating towards a narrow set of globally familiar securities rather than diversifying internationally.

Traditional home bias occurs when investors allocate a disproportionate amount of their portfolio to companies and assets from their own country, even when international diversification could provide broader opportunities. However, digitally connected investors in Southeast Asia may be unknowingly falling into the same trap by focusing on a small number of globally familiar companies.

This is not simply about owning international stocks, but about the tendency for investors to gravitate towards a relatively small universe of familiar companies, regardless of their geographical location. The diversification illusion can be a problem here, as investors may believe they are well-diversified based on individual holdings, when in reality they still have significant common exposures to US interest rates, technology valuations, and other global factors.

The rise of algorithmic investment discovery, driven by social media, financial apps, and AI assistants, may exacerbate this issue. These platforms tend to amplify information about companies that already have high visibility, making globally documented businesses even more dominant in the minds of investors. As a result, there is a growing need for financial institutions and wealthtech platforms to consider new factors beyond traditional portfolio assessments, such as the informational architecture of digital investing and the potential for increased concentration among a limited number of globally familiar companies.