Which are India's 5 biggest business houses as per Hurun?

As per the 2021 Burgundy Private Hurun India 500 list, Tata Group with as many as 14 companies in the list is India's biggest business house. This is followed by Adani Group, Aditya Birla Group, Murugappa Group and Bajaj Group. "The top 5 business groups...has a combined value of more than [₹46 lakh crore]," Hurun India stated.