Co-written by Massachusetts Institute of Technology's Alex Edmans and Norwegian School of Management's Oyvind Norli, the study claims stock markets decline 0.39 percent on average after a World Cup game loss and 0.29 percent after any international match.
''We wanted to find an event that affects a large portion of a given population's sentiment and we found it in soccer,'' said Norli told the Bloomberg news agency. ''The correlation gets stronger with the importance of the game.''
The study found no evidence that stock markets rise after victories.