A World Cup elimination loss is followed by a roughly 0.5% abnormal fall in the losing country's market the next day, and winning does nothing. Real loss aversion in prices, or a fragile 2007 result?
The asymmetry in Edmans, García and Norli (2007, JF) baffles me. Across about 1100 international matches in 39 countries, a World Cup elimination loss is followed by a roughly 0.49% abnormal decline in the losing country's own index the next trading day, net of world market moves. Wins, however, produce no comparable effect. Taken at face value that is loss aversion, or negative affect driven pessimism, priced by the most incentivised participants we have, who have every reason not to.
For one, I am unsure of the robustness. It is an old, famous result, which these days is closer to a yellow flag than a green one, and the headline number rests on only about 56 World Cup elimination games, which sharpens the fragility worry rather than softening it. A 2026 working paper (Gatto, "The reach of the World Cup distraction effect"), as I have seen it summarised, argues the broader World Cup market effect barely registers in the deep, liquid venues that carry most of the world's money, that a couple of ordinary measurement choices can conjure it out of noise, and that the durable bite concentrates among retail investors trading on the result. Worth flagging that Gatto works the distraction and inattention channel rather than re-testing the loss result head on, so it is adjacent evidence, not a direct replication, and I am going off the write-up, not the paper itself. Either way it reframes the question from "markets are irrational" to "a thin slice of participants is, sometimes." Does the original survive modern specification-curve and multiple-testing scrutiny, or is this a well-dressed green jelly bean?
Second, a confound that cannot be ignored. The original sample runs only to the early 2000s, so this next case sits out of sample, but it is the one Edmans himself later used to stress-test the finding against the 2014 tournament. Brazil's 7-1 semi-final loss should, on the mood story, have been about the cleanest negative affect shock going. The Bovespa rose about 1.8%. Edmans' own reading is political, that the defeat was taken as raising the odds the incumbent president lost October's election to a more market friendly rival, and at least one other account puts the move down to macro tailwinds instead. National mood and the market moved in opposite directions, and the fact that two credible explanations compete for the same print is the point: sentiment is not one variable, and any single-event reading is underidentified.
Full piece linked in the comments if useful, but mostly I want the pushback: affect pricing that is real if small, or artifact?