Tata Group-backed Tata Digital completed the acquisition of a 64.3% stake in Supermarket Grocery Supplies, India's largest online grocer doing business under BigBasket name, from Alibaba Group for $1.3bn. “We are extremely excited about our future as a part of Tata Group. As a part of the Tata Ecosystem, we would be able to build stronger consumer connect and accelerate our journey," Hari Menon, BigBasket CEO.