AbbVie Inc. made a fourth offer to buy Shire Plc, raising the price to about 30.1 billion pounds ($51.5 billion) in an effort to force negotiations. Shire said its board would meet to discuss the bid. AbbVie increased its offer by about 11 percent to 51.15 pounds a share in cash and stock after meeting with Shire’s top shareholders, the drugmaker said today. Shire said in a statement that it wasn’t given AbbVie’s latest proposal ahead of time, and the company advised investors to take no action. http://www.bloomberg.com/news/2014-07-08/abbvie-raises-offer-for-shire-to-51-5-billion.html