But it's important to remember that the report doesn't distinguish between Buffett's stock picks and those made by the company's other investment managers, Todd Combs and Ted Weschler. Combs and Weschler have been active over the last two years since they started with Berkshire because they are both building $4 billion portfolios.
Berkshire does not typically comment on these quarterly reports, and Buffett did not immediately respond to a message late Thursday.
Buffett has said that his investments tend to be the larger ones in the portfolio. He says investments smaller than $300 million are likely to be the work of Weschler or Combs.
Besides investments, Berkshire owns more than 80 companies; including insurance, utility, railroad, furniture, jewelry, manufacturing, restaurant and apparel companies. Berkshire's insurance and utility businesses typically account for more than half of his company's net income.
Follow Josh Funk online at www.twitter.com/funkwrite
Berkshire Hathaway Inc.: www.berkshirehathaway.com