Also: What to expect from the stock market, the case for high-yield bonds and how your Social Security benefits might change if you go back to work.

Today's "Woodstock for Capitalists" began with just a dozen attendees in 1965. Sixty years later, the Omaha, Nebraska gathering attracts as many as 40,000 people from around the world.

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.