Warren Buffett's Berkshire Hathaway, which made a big splash with its $76 billion Apple stock sale in recent weeks, has made another important sale. The company officially announced that it sold $982 million worth of Bank of America stock. The stock sales were made between August 23-27. With these sales, the company's cash on hand has reached $278 billion. Berkshire Hathaway's cash ratio in its assets has also reached 25% for the first time in 24 years.