Buffett continues to sell nearly $900 million worth of Bank of America (BAC.US) stocks, recovering all of his investment costs.

As Warren Buffett continues to sell shares of Bank of America Corp (BAC.US), the investment master known as the "Oracle of Omaha" has now recouped all of his initial investment in the stock. The remaining Bank of America Corp stock that he still holds, valued at over $34 billion, is pure profit. In a transaction disclosed in a filing submitted on Thursday, Buffett's Berkshire Hathaway (BRK.A.US) sold $896 million worth of Bank of America Corp stock this week. This means that, excluding tax impacts, Buffett's total profits from selling Bank of America stock since mid-July, along with dividends received since 2011, have exceeded the $14.6 billion he spent to purchase Bank of America Corp shares. Now 94 years old, Buffett bought preferred shares and warrants of Bank of America Corp in 2011 for $5 billion, establishing his investment in the company. Six years later, after the bank raised its dividend, he converted these shares into common stock. During his investment period, the stock price of Bank of America Corp doubled. Berkshire Hathaway has not responded to requests for comment. Following the recent sale, Berkshire's ownership stake in Bank of America Corp may soon drop below the 10% regulatory threshold that requires disclosure of transactions within a few days. Once Buffett's controlled shares fall below this level, disclosure of his transactions in the stock may need to wait for several weeks, typically provided quarterly. Over the years, Buffett has been increasing his stake in Bank of America Corp and praising the bank's leadership, but he has not publicly explained his decision to sell shares. The commentary may be complex, as U.S. regulators do not want major bank shareholders to potentially influence the bank. At the Barclays Global Financial Services Conference on September 10th, Bank of America Corp CEO Brian Moynihan mentioned that he cannot directly call Buffett and ask "what he's doing because, frankly, we can't and we won't ask." But Moynihan added, "The market digest these stocks. It's just part of everyday lifelife goes on."