6. NTT DoCoMo-Tata Tele: $2.7 billion

Japanese telecom giant NTT DoCoMo picked up a 26 per cent equity stake in Tata Teleservices for about Rs 13,070 crore ($2.7 billion) in November 2008.

This is the 6^th-largest M&A deal involving an Indian company.

With a subscriber base of 25 million in 20 circles DoCoMo paid Rs 20,107 per subscriber to acquire the stake. DoCoMo picked up the equity through a combination of fresh issuance of equity and acquisition of shares from the existing promoters.