The superstar credit-card processing company's stock lost a mere 0.9% in 2021, not blowing anyone's net worth, but severely lagging the S&P 500's 27% increase over the same time. And while Visa's sales roared back by the end of the year, the world is still in economic turmoil, with inflation and supply chain issues causing general fears about the economy. It's a no-brainer model, and as the population grows, so does Visa's addressable market, which is pretty much anyone who needs to go to the grocery store to buy a container of milk.