The Superbowl Stock Market Indicator

One of the popular stock trends that investors look at each year is the Superbowl Stock Market Indicator, which basically says that if the winning team is from the old National Football League which is now the National Football Conference [NFC], then the stock market will be up for the year. However if the winner is from the old AFL, now the American Football Conference [AFC], the stock market will be down. Snopes.com has a great write-up on this indicator. Aren't the Bears and Colts originally from the NFL? So the market should be up no matter who wins.