Berkshire Hathaway’s market value topped Tesla on Monday for the first time since November. Strong earnings did it.

Warren Buffett's recent Berkshire Hathaway letter highlights his disciplined, long-term approach. Find out what we can learn from Buffett's latest insights.

As always, Buffett shared insight into Berkshire's operations and plenty of wisdom. Buffett just identified the biggest threat to Berkshire Hathaway. Before I go any further, let me first explain what the biggest threat to Berkshire isn't.

Warren Buffett's Berkshire Hathaway (NYSE: BRK.A) (NYSE: BRK.B) submitted its Form 13F for the fourth quarter. Buffett often says an S&P 500 index fund is the best way for most people to get exposure to U.

Discover how Warren Buffett amassed his $150 billion net worth, and how the Berkshire Hathaway CEO spends his fortune.