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Listen to this article in summarized format Reliance Industries' combined market cap rose to roughly ₹30.26 lakh crore on October 28, overtaking the Tata Group's ₹25.39 lakh crore and reclaiming the top position for the first time since October 2020, according to ET Intelligence calculations based on listed group companies. Adani Group ranked third with a market capitalisation of ₹16.8 lakh crore, followed by Bharti Telecom Group at ₹13.98 lakh crore and Bajaj Group at ₹13.32 lakh crore. Read more: Ambani bluechip bet gets bigger: Investors mark 82% of traded Jio shares for holding beyond listing Before Jio's listing, Reliance Industries Group's listed companies had a combined market capitalisation of around ₹17.78 lakh crore, compared with ₹25.5 lakh crore for Tata Group companies. The listing effectively added a new large business to the group's listed universe and altered the balance among India's largest conglomerates. Read more: From 104 shareholders to nearly 80 lakh! Jio becomes India's most widely owned stock on listing day The rankings also reflect a challenging year for some of India's largest business houses. Tata Group's market capitalisation has declined 12.9% so far in 2026, while Mahindra Group is down 15.7% and Larsen & Toubro Group has fallen 13.5%. Reliance Industries' group market cap also came under pressure before the Jio listing, led by a decline in Reliance Industries shares. Not all large conglomerates have struggled. Adani Group's combined market capitalisation has risen by 13.8% in 2026. (What's moving Sensex and Nifty Track latest market news, stock tips, Budget 2025, Share Market on Budget 2025 and expert advice, on ETMarkets. Also, ETMarkets.com is now on Telegram. For fastest news alerts on financial markets, investment strategies and stocks alerts, subscribe to our Telegram feeds .) Subscribe to ET Prime and read the Economic Times ePaper Online.and Sensex Today. Top Trending Stocks: SBI Share Price, Axis Bank Share Price, HDFC Bank Share Price, Infosys Share Price, Wipro Share Price, NTPC Share Price (What's moving Sensex and Nifty Track latest market news, stock tips, Budget 2025, Share Market on Budget 2025 and expert advice, on ETMarkets. Also, ETMarkets.com is now on Telegram. For fastest news alerts on financial markets, investment strategies and stocks alerts, subscribe to our Telegram feeds .) Subscribe to ET Prime and read the Economic Times ePaper Online.and Sensex Today. Top Trending Stocks: SBI Share Price, Axis Bank Share Price, HDFC Bank Share Price, Infosys Share Price, Wipro Share Price, NTPC Share Price
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