Buffett rejects the efficient markets hypothesis, but still recommends low-cost index funds for most ordinary investors.

Buffett's hamburger quiz provides a valuable framework for reorienting how investors view market volatility: For long-term ...

Incompetent government policy toward trade and finances can lead investors to demand a greater risk premium on sovereign debt ...

Financial fragilities and feelings of social isolation create a powerful combination for being a victim of financial fraud.

"If you're thinking about buying the dip, then you're looking at market losses in a healthy manner," said Peter Lazaroff, chief investment officer of Plancorp and a member of Investopedia's advisor ...

Tesla’s cars have catapulted the company into the spotlight as one of the most successful independent automakers. Learn about ...

The biggest investment mistakes aren’t about picking the wrong stocks, they're about falling into predictable traps. "If you avoid unforced errors, you’ll already be ahead of most investors," Ritholtz ...

Behavioral Finance Adam Hayes Adam Hayes's expertise lies in the social studies of economic behavior, finance, and technology. He writes about the influence of social forces on economic choice ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

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