Tens of thousands of people will descend on Omaha, Nebraska, to attend the annual shareholder weekend for billionaire Warren Buffett's Berkshire Hathaway. Buffett, 94, is expected to answer shareholder questions over four and a half hours at Berkshire's annual meeting on Saturday.

Berkshire Hathaway ended the fourth quarter with approximately $300.9 billion worth of Treasury bills, and another $33.3 billion in cash. Investors have been waiting for Buffett to deploy that cash into a big investment, but it's unlikely that happened in the first quarter.