1. DuPont (DD) upped its bid for the Danish food ingredients maker Danisco to $6.7 billion after an initial takeover bid failed to win sufficient investor support.
2. Israel's Teva Pharmaceutical Industries (TEVA), the world's No. 1 generic drug company, agreed to pay $6.2 billion for Cephalon (CEPH), which is developing stem cell treatments and therapies for asthma and lung cancer.
3. Chip equipment maker Applied Materials (AMAT) is buying Varian Semiconductor for $4.9 billion to add technology for chips used in mobile devices.
4. St. Louis-based Arch Coal (ACI) agreed to buy West Virginia's International Coal (ICO) for $3.4 billion, a deal that will make it the second-largest U.S. producer of coal used to make iron and steel.
5. Seeking to expand its harbor crane capacity, U.S. heavy equipment maker Terex (TEX) made an offer for Demag Cranes that values the German company at $1.3 billion.
6. With a bid of about $1.1 billion, Cerberus Capital Management and Chatham Lodging Trust won a bankruptcy auction for 65 hotels owned by Innkeepers USA Trust.
7. Renren, China's biggest social networking website by page views, raised $743 million in an initial public offering in the U.S. on May 3.
8. PPR, the French company that owns Gucci and Puma, agreed to pay $608 million for Volcom (VLCM), a Costa Mesa (Calif.) marketer of skateboarding and snowboarding gear.
9. Beijing-based Hawtai Motor agreed to invest $177 million in Saab Automobile and will receive as much as 29.9 percent of Saab's owner, Spyker Cars, in return. The agreement is contingent on government approvals.
10. A rookie trading card for National Hockey League Hall of Famer Wayne Gretzky sold to an anonymous bidder for $94,163, a record for a hockey card.