Jason Zweig

Daniel Kahneman gave people an understanding of what drives financial decisions. Daniel Kahneman explained investors to themselves.

Chipotle’s 50-for-1 stock split is a clever step that will help turn more of its employees into shareholders.

The innovative structure of Berkshire Hathaway stands out—and benefits shareholders

Wall Street likes to tout returns it didn't actually produce. You need to ask some important follow-up questions.

When billions of dollars gush into a small ETF that just reported big gains, more big gains can soon follow. The problem: It's the investor themselves who drive the gains—and who will suffer when their impact fades.

The time seems just right for active stock pickers to beat the market. Why, then, are they doing even worse than usual?

In spring 2008, Paul Rosenau, a construction supervisor and heavy-equipment operator in Waseca, Minn., bought a Powerball ticket—and hit a $59.6 million after-tax jackpot. Rosenau, a devout Lutheran and the son of a pastor, recalls with a tremor in his voice how he and his wife, Sue, felt when they woke up the next morning. “We were very sure [the Powerball jackpot] was divine intervention,” Rosenau recalls, “and we were very sure what we were supposed to do with it.”

Index funds are a great way to match the performance of the market. So why do so many investors end up falling short?

There’s an ETF for nearly everything, but good ones are rare.

You’re Not Paranoid. The Market Is Out to Get You.