An amended SEC filing by Berkshire Hathaway this afternoon indicates Warren Buffett's company did not have any 'secret' stock holdings as the third quarter ended on September 30.
Each quarter, Berkshire files what's known as a 13F with the SEC, publicly detailing its holdings of U.S. publicly traded stocks. That's how we learned just over a week ago that Berkshire's Wal-Mart stake had almost doubled in this year's third quarter. (The filings are also the source of data for our Berkshire Hathaway Portfolio Tracker.)
The original 13F for the third quarter, filed on November 16, includes this sentence: "Confidential Information has been omitted from the public Form 13F and filed separately with the commission."
The amended 13F, filed today, lists all the same stock holdings as the original, but does not include the line about omitting confidential information.