Noted investor Warren Buffett and his company, Berkshire Hathaway, spent $1.8 billion on the stocks of seven publicly traded companies in the last financial quarter. Knewz.com has learned that the information was revealed in the company’s quarterly 13F filing with the Securities and Exchange Commission. According to reports, one of the stocks Buffett recently bought stands out among the rest as an exceptional value. Berkshire's Ballooning Cash Reserves In a letter to shareholders in February,