Investors in different parts of the US favor different types of stocks

Openfolio, an app that allows people to share investment portfolios, compiled data from its more than 40,000 subscribers and found some surprising regional bias in people's stock-picking preferences.

The company examined the top 2,000 stocks that users owned and then separated them by industry, looking to see who owned what companies based on where they lived.

From there, Openfolio calculated the relative probability that investors in a region were likely to be invested in a particular industry.

Looking at the maps below, you can see that people exposed to a lot of "home bias." In other words, they love investing within their own backyards.