The sharp rise in his fortune came as Reliance Industries shares surged 11.64% to Rs 1,299 on the BSE, marking their strongest trading session in more than six years. The rally followed better-than-expected earnings from the company's oil-to-chemicals business and improved profitability at its telecom operations.
The gains also helped Reliance emerge as the biggest contributor to the benchmark Nifty 50 index on Monday.
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Ambani's wealth is closely tied to his holdings in Reliance Industries, which operates businesses spanning oil refining, petrochemicals, telecom, retail and new energy. Changes in the company's share price have a significant impact on his estimated fortune.
The latest jump in wealth comes after a difficult year for Reliance shareholders. Even after Monday's rally, the stock remained nearly 19% below its 52-week high of Rs 1,611.20.
The rally was driven by Reliance's strong financial performance for the July-September quarter. The company reported a 40.6% rise in profit attributable to shareholders to Rs 25,548 crore, beating analysts' expectations.
Its oil-to-chemicals business benefited…