Adani Group's Ambuja Cements will acquire 46.8% stake in Orient Cement from the CK Birla Group and other promoters. The deal is valued at ₹8,100 crore, with shares priced at ₹395.4 each. Ambuja plans to launch an open offer for 26% of Orient's expanded share capital. The deal will improve Adani Group's pan-India market share by 2% in cement industry.