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.

Investors are zeroing in on Berkshire Hathaway's (BRK-B, BRK-A) annual shareholder meeting this weekend, where the firm's first quarter earnings results will be announced. Portfolio Wealth Advisors president and CIO Lee Munson breaks down what to expect from the "Oracle of Omaha" — Berkshire Hathaway Chairman and CEO Warren Buffett — and what he could say in regards to Berkshire's cash reserves and potential new buys.