Economics & Finance / Economic Theory / Behavioral Economics

Why Smart Investors Win & You Lose: The Shocking Truth from Finland's Stock Market

Think you're smarter than the market? A landmark study from the Journal of Financial Economics analyzed every single trade in Finland's stock market. The results? Foreign investors (the 'smart money') consistently bought winners and sold losers, while everyday Finns did the opposite—and paid the price. This video breaks down the study's key findings: how sophistication drives behavior, why momentum beats contrarian thinking, and the hidden cost of being a small investor. By the end, you'll understand the psychological traps that separate winners from losers in any market. No jargon, just the cold hard data.