We can’t understand them or like how they look, but the truth is that zombies are an utmost investment right now. With their own billionaire economy, the world of the undead is present in our everyday life, from the television to the books. They are one of the most powerful symbols of popular culture, especially in the last four years, when they boosted the entertainment economy. And the putrefactive wave doesn’t seem to stop here, as there is much more zombie-inspired fun on our way. They might love brains, but they also love cash, especially when it comes in the form of billions.