Warren Buffett confirms to CNBC's Becky Quick that Berkshire Hathaway has made changes to some of its controversial bets on the long-term health of stocks.  Buffett told Becky last night by telephone that roughly $2 billion of put options on the benchmark S&P 500 stock index have been altered. Changes have also been made to a derivative on a foreign stock index, but he's not saying which one.  The new contracts have a lower strike price but cover a shorter time period.    Read More

Warren Buffett tells our Becky Quick, with a chuckle, that maybe he has "lost his touch" as some critics have suggested, after a 30 percent decline in Berkshire Hathaway stock over the past 12 months.  But, the way he sees it, Berkshire beat the stock market, as measured by the S&P 500 index, making it not such a bad year after all.  Here's Becky's report from this morning's Squawk Box, including an extensive excerpt of her on-camera conversation with Buffett over the weekend.   Read More

Warren Buffett made news at this weekend's Berkshire Hathaway meeting by giving shareholders a preview of the company's first quarter earnings results.  He also discussed expected losses in some of the credit default swaps the company has written.  Berkshire has just filed a transcript of those comments with the SEC.  Here's exactly what he said.   Read More

A record crowd of 35,000 Berkshire Hathaway shareholders hear Warren Buffett reveal that first quarter profits will be down almost 11 percent this year.  But he remains very bullish on banks in Berkshire's portfolio, especially Wells Fargo.   Read More

Warren Buffett told shareholders the four candidates selected to possibly succeed him as Berkshire Hathaway's chief investment officer "did not cover themselves in glory."   Read More

Warren Buffett tells shareholders today that some of Berkshire Hathaway's derivatives contracts, those tied to the credit quality of junk bonds, will wind up losing money.  He's still optimistic on those contracts tied to stock market indexes.   Read More

As part of CNBC's coverage of tomorrow's Berkshire Hathaway annual shareholders meeting, two of the afternoon programs discussed a question we've been hearing in recent months: Has Warren Buffett lost his way? And does he get a "free pass" from the media?  Take a look at the video clips.   Read More

Value investor and fund manager Mario Gabelli tells CNBC's Becky Quick he often gets good ideas from some of the thousands of like-minded investors who attend the Berkshire Hathaway annual meeting each year.  Here's the video clip of their conversation, which also touched on Warren Buffett's controversial derivatives positions.    Read More

Berkshire Hathaway has lost its AAA credit rating from Fitch, but it doesn't look like the change is due to any recent 'mistakes' by Warren Buffett and his holding company.   Almost at the top of its news release on the one-notch downgrade and negative outlook, Fitch says the move is part of a "broader review of insurance and financial services company ratings" due to the "current stressful economic environment."    Read More

Warren Buffett says it's more likely Berkshire Hathaway will make a domestic acquisition before it buys a foreign company, because there are more opportunities opening up in the U.S. and fewer competing buyers bidding up prices.  Buffett tells Bloomberg Television, "The way things are going, there's a lot of things that may be happening in the United States."    Read More