Warren Buffett has long complained that Berkshire Hathaway has become so huge that it’s difficult to find acquisitions that are both undervalued and large enough to make a material difference to the company’s bottom line.

Investors often use Berkshire Hathaway's quarterly-filed Form 13Fs to track Warren Buffett's trading activity. Buffett has been a net seller of stocks for nine consecutive quarters, which has ballooned Berkshire's cash pile to $334 billion.

CEO Warren Buffett, known as the Oracle of Omaha, is among the greatest living investors. Because Berkshire Hathaway has delivered outstanding long-term returns for its shareholders, the company’s imminent earnings release will be a closely watched and highly anticipated event.