Two years ago, the Adani Group of Gautam Adani, which has large footprints in ports, airports and energy sectors, entered another infrastructure sector, cement, making a bold move to acquire Ambuja Cements and ACC from Swiss giant Holcim for $10.5 billion. The largest cement deal in India made Adani the No. 2 player in cement in India after Aditya Birla Group. Since then, Adani has bought a few more cement companies to grow his business in a race with Birla's Ultratech.