Berkshire Hathaway (BRK-A)

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.

Over the past six months, Berkshire Hills Bancorp’s stock price fell to $26.19. Shareholders have lost 8.1% of their capital, which is disappointing considering the S&P 500 has climbed by 5.2%. This may have investors wondering how to approach the situation.

Buffett isn't known as a technology investor, but his portfolio still includes some exposure to the quantum computing movement.

Like Berkshire Hathaway itself, many of its top holdings were built to last.

A rotation back into value stocks may be imminent in today's market, giving investors a chance to expose themselves into a catch up play.

Buffett is not known as a technology investor, but even his portfolio has some exposure to the artificial intelligence (AI) megatrend.

Thanks to an acquisition in 1998, the Oracle of Omaha has a bigger stake in the AI revolution than most investors realize.

In a 1998 Berkshire Hathaway shareholder meeting, Charlie Munger, unveiled his three-step strategy for wealth accumulation starting from scratch.