1. Tata Steel-Corus: $12.2 billion
On January 30, 2007, Tata Steel purchased a 100% stake in the Corus Group at 608 pence per share in an all cash deal, cumulatively valued at $12.2 billion.
The deal is the largest Indian takeover of a foreign company till date and made Tata Steel the world's fifth-largest steel group.