Learn how Warren Buffett's "circle of competence" rule for evaluating investments can help you avoid costly mistakes.

Trina Paul is a Breaking News and Personal Finance Writer at Investopedia, covering topics like retirement, consumer debt, and retail investing. She focuses on making complex financial topics ...

This is an AI-powered multi-agent system designed for a 3-week college stock trading competition on the Investopedia Simulator, running from February 9 to March 2, 2026. The system analyzes and ...

Trina Paul is a Breaking News and Personal Finance Writer at Investopedia, covering topics like retirement, consumer debt, and retail investing. She focuses on making complex financial topics ...

Aaron McDade is a breaking news reporter for Investopedia. He is an experienced journalist who has covered everything from the latest in business and tech news to sports and international news like ...

Aaron McDade is a breaking news reporter for Investopedia. He is an experienced journalist who has covered everything from the latest in business and tech news to sports and international news like ...

Tobi is a crypto writer at Investopedia. He aims to simplify the complex concepts of blockchain and cryptocurrencies for the masses. FG Trade / Getty Images The average freelancer in the U.S. makes ...

Aaron McDade is a breaking news reporter for Investopedia. He is an experienced journalist who has covered everything from the latest in business and tech news to sports and international news like ...

Kara Greenberg is a senior news editor for Investopedia, where she does work writing, editing, and assigning daily markets and investing news. Prior to joining Investopedia, Kara was a researcher and ...

Kara Greenberg is a senior news editor for Investopedia, where she does work writing, editing, and assigning daily markets and investing news. Prior to joining Investopedia, Kara was a researcher and ...

Trina Paul is a Breaking News and Personal Finance Writer at Investopedia, covering topics like retirement, consumer debt, and retail investing. She focuses on making complex financial topics ...

Tobi is a crypto writer at Investopedia. He aims to simplify the complex concepts of blockchain and cryptocurrencies for the masses. Thomas Barwick / Getty Images Millennials have an average 401(k) ...