Dhirubhai Hirachand Ambani founded Reliance Commercial Corporation in 1966 in Mumbai, India, initially as a trading company dealing in spices and polyester yarn. Dhirubhai Ambani had previously worked as a clerk in Aden, Yemen, and returned to India with limited capital but significant entrepreneurial ambition.
Reliance expanded into polyester manufacturing in the 1970s, establishing a textile mill in Naroda, Gujarat. The company's Vimal brand of polyester fabric became one of India's most recognized consumer brands in the 1970s and 1980s. Dhirubhai Ambani was a pioneer in accessing Indian capital markets, conducting some of India's first large public share offerings and building a shareholder base of millions of small investors.
Reliance went public in 1977, listing on the Bombay Stock Exchange. The company's share offerings were notable for their scale and for the broad participation of retail investors, many of whom became wealthy as Reliance's share price appreciated over subsequent decades.
Through the 1980s and 1990s, Reliance expanded aggressively into petrochemicals, refining, and other industrial businesses. The company built the Jamnagar refinery in Gujarat, which became one of the world's largest and most complex refining facilities. The refinery's scale and complexity gave Reliance significant advantages in refining margins.
Dhirubhai Ambani died in July 2002 without leaving a will, leading to a dispute between his two sons, Mukesh Ambani and Anil Ambani, over the division of the Reliance empire. The dispute was resolved in 2005 through a family settlement brokered by their mother, Kokilaben Ambani. Under the settlement, Mukesh Ambani retained control of Reliance Industries (oil, gas, petrochemicals, and retail), while Anil Ambani received control of several other businesses that were subsequently grouped under Reliance ADA Group (telecommunications, power, financial services, and entertainment). The two groups operated independently and were prohibited from competing in each other's core businesses for a period.
In 2010, the non-compete agreement between the Mukesh and Anil Ambani groups expired, and Mukesh Ambani's Reliance Industries entered the telecommunications market. The company spent several years developing its 4G LTE network infrastructure before launching Jio in September 2016.
The launch of Jio in 2016 was one of the most disruptive events in Indian telecommunications history. Jio offered free voice calls and heavily subsidized data services, attracting hundreds of millions of subscribers within months. The disruption forced several major Indian telecommunications operators to merge or exit the market, consolidating the industry around Jio, Airtel, and Vodafone Idea.
In 2020, Jio Platforms raised approximately 1.52 trillion Indian rupees (approximately 20 billion US dollars) from a series of global investors including Facebook (now Meta), Google, Silver Lake, Vista Equity Partners, and others. The fundraising valued Jio Platforms at approximately 4.91 trillion Indian rupees and was one of the largest fundraising rounds in Indian corporate history. Intel subsequently became the 12th company to invest in Jio Platforms.
For the trailing twelve months ending September 2025, Reliance reported revenue of approximately 10.2 trillion Indian rupees, driven by solid performances in its Digital Services, Retail, and Oil-to-Chemicals segments.