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.

Warren Buffett’s Berkshire Hathaway is set to hold its annual shareholder meeting and release its first-quarter financial results on Saturday. Investors will be watching closely to see what the "Oracle of Omaha" has to say amid economic uncertainty.

An estimated 40,000 people are visiting Omaha this weekend for the annual Berkshire Hathaway shareholders weekend, also known as the "Woodstock of capitalists," drawing global attention and economic benefits to the city.