Reliance Industries Ltd., controlled by Asia’s richest man, toppled ExxonMobil Corp. to become the world’s largest energy company after Saudi Aramco, as investors piled into the conglomerate, lured by the Indian firm’s digital and retail forays.

Reliance, which manages the biggest refinery complex, gained 4.3 percent in Mumbai on Friday adding $8 billion to take its market value to $189 billion, while Exxon Mobil erased about $1 billion. Reliance’s shares have jumped 43 percent this year compared with a 39 percent drop in Exxon’s shares as refiners across the globe struggled with a plunge in fuel demand. Aramco, with a market capitalization of $1.76 trillion, is the world’s biggest energy company.

While the energy business accounted for about 80 percent of Reliance’s revenue in the year ended March 31, Chairman Mukesh Ambani’s plan to expand the company’s digital and retail arms has helped him attract $20 billion into the Jio Platforms Ltd. unit. That in turn helped add $22.3 billion to Ambani’s wealth this year, propelling him to the fifth spot in the Bloomberg Billionaires Index.

Ambani’s dealmaking has lured investments from Google to Facebook Inc. into his digital platform in recent months. The 63-year-old tycoon has identified technology and retail as future growth areas in a pivot away from the energy businesses he inherited from his father who died in 2002.

Meanwhile, large-scale destruction of global oil demand — some 30 million barrels a day, or a third of regular usage, in April — sent energy markets into a second-quarter tailspin, from which they’ve only recently started to recover. Worst-in-a-generation oil prices combined with OPEC production cuts, collapsing refining margins and millions of barrels of unsold crude have hurt big oil companies including Exxon and Chevron Corp.