time for a five-year term. Goldman maintained the right to purchase back the preferred stock and in March 2011 exercised this right paying $5.5 billion to Berkshire (the preferred stock could only be purchased back at a 10% premium). The warrants have been exercised and Berkshire holds 3% of the share capital of Goldman Sachs. Profit on the preferred stock was estimated at $1.8 billion and exercising the warrants has yielded a profit of more than $2 billion, although Berkshire's continued ownership of shares in Goldman Sachs means the entire profit cannot be quantified. On August 26, 2011, Berkshire Hathaway purchased $5 billion of preferred shares in Bank of America. The investment has an annual interest cost of 6% earning Berkshire $300 million in annual interest. Alongside the preferred stock investment, Berkshire obtained warrants allowing Berkshire to buy 700 million common shares at $7.14 per share any time before September 2, 2021. Based on the share price in June 2017, this position has yielded a profit of more than $10 billion excluding the annual interest earned from the preferred stock. In 2008, Berkshire purchased preferred stock in Wrigley, Goldman Sachs, and GE totaling $14.5 billion. In September 2008, MidAmerican Energy Holdings, a subsidiary of Warren Buffett's Berkshire Hathaway Inc., invested about US$230 million for a 10% (or 9.89%) share of BYD @ HK$8/share. On November 3, 2009, Berkshire Hathaway announced that using stock and cash totaling $26 billion, it would acquire the remaining 77.4 percent of the Burlington Northern Santa Fe Corporation, parent of BNSF Railway, that it did not already own. This was the largest acquisition to date in Berkshire's history. On March 14, 2011, Berkshire Hathaway announced that it would acquire the Lubrizol Corporation for $9 billion in cash, a deal that was described as one of the largest deals ever for Berkshire Hathaway. On March 25, 2011, Berkshire Hathaway made its first foray into the Indian insurance sector with its non-direct subsidiary BerkshireInsurance.com. On February 14, 2013, Berkshire Hathaway Inc and 3G Capital announced plans to purchase H.J. Heinz Co. for $72.50 per share or $28 billion including debt. The company became a majority owner of Heinz on June 18, 2015, after exercising a warrant to acquire 46.2 million shares of common stock for a total price of $462 million increasing its stake to 52.5%. Berkshire owns 1.74 million shares of Gannett. The company also holds part