Berkshire Hathaway (BRK-B)

Paying a bit more for this ETF could result in better long-term results.

Buffett continues to favor this stable source of revenue for Berkshire Hathaway's portfolio.

While some investors are off chasing each shiny new toy, there's a reason this company is an industry leader.

Berkshire's Charlie Munger preached the importance of being learning machines who end each day a little wiser.

The Oracle of Omaha is a big believer in concentrating Berkshire Hathaway's capital in his best ideas.

Many investors pay attention to mid-cap stocks because they have established business models and expansive market opportunities. However, their paths to becoming $100 billion corporations are ripe with competition, ranging from giants with vast resources to agile upstarts eager to disrupt the status quo.