The tournament doesn't care about your feelings. Neither does the market. I lost money on Argentina in 2010. I had logic on my side: reigning champions, Messi in his prime, a squad loaded with talent. They crashed out in the quarterfinals. I'd made every classic mistake — I'd confused a good team with a good bet, let narrative override odds, and doubled down when I should have cut my losses. Sound familiar? It should. I've made every one of those same mistakes with money. Betting markets and financial markets are cousins. They both price in uncertainty, reward the disciplined, and punish the emotional. After years of watching both closely, here's what the World Cup — more than any economics textbook — taught me about investing. 1. The Favorite Doesn't Always Win — But That Doesn't Mean You Should Bet the Underdog Every World Cup produces upsets. Carpe Verde held Spain. South Korea over Germany. Senegal over France. Costa Rica over Uruguay....