publicly held company. In July 2007, the company bought Groupe Danone's biscuit (cookie) and cereal division for $7.2 billion, including iconic French biscuit brand Lefèvre-Utile. While two years earlier firestorms of protest had arisen over plans for American PepsiCo's hostile takeover of the French company, Kraft's announcement was not met with the same protests, in part because Kraft agreed not to close French factories and keep the new merged divisions headquarters near Paris for at least three years. In November 2007, Kraft agreed to sell its cereal unit to Ralcorp Holdings, a major private-label food maker, for $2.6 billion in a form of a spin-off merger. This would add 50% to Ralcorp's sales, to $3.3 billion, and will be used for Kraft's debt payment, which was at $13.4 billion, in danger of a downgrade by Standard and Poor's. In February 2008, Berkshire Hathaway run by billionaire investor Warren E. Buffett announced that it had acquired an 8% stake in Kraft then worth over $4 billion. Buffett's business partner Charles Munger had also invested over $300 million in Kraft. Berkshire Hathaway owned 5.6% of the outstanding stock of Kraft Foods, as reported in the holding company's 2010 annual report. On September 22, 2008, the company replaced the troubled insurance company, American International Group in the Dow Jones Industrial Average. Purchase of Cadbury On September 7, 2009, Kraft made a £10.2 billion takeover offer for the long-established British confectionery group Cadbury, makers of Dairy Milk and Bournville chocolate. On November 9, 2009, Kraft's £9.8bn takeover bid was rejected by Cadbury. Cadbury stated that the takeover bid was a "derisory" offer. Kraft renewed the offer under the same terms on December 4, 2009. The offer generated significant political and public opposition in the United Kingdom and abroad, even leading to calls for the government to implement a policy of economic protectionism in cases of takeovers of large companies. On January 19, 2010, Cadbury finally approved a revised offer from Kraft, valuing the confectionery business at $19.5 billion (£11.5 billion). The funding for the takeover was partially provided by the Royal Bank of Scotland, the British part-state-owned bank. The Cadbury purchase was part of the long-term strategy of Irene Rosenfeld, CEO and Kraft Chairman since March 2007, who developed a three-year turnaround plan designed to drive the profitable growth of Kraft Foods. Rosenfeld wanted to develop new markets and expand product range when she