Net worth: US$151 billion
Company: Tesla, SpaceX

Worth US$24.6 billion in March 2020, Elon Musk clearly had a very good year, with his fortune standing at US$151 billion as of April 2021, according to Forbes. His 514% increase in fortune is due largely to the soaring private market valuation for his company SpaceX, along with continued market enthusiasm for Tesla stock.

Net worth: US$124 billion
Company: Microsoft

Although stepping down from the board in March 2021, co-founder of Microsoft Corporation Bill Gates still has a huge fortune to his name. Despite announcing their divorce earlier this year, Gates and his wife Melinda still co-chair the Bill & Melinda Gates Foundation, the world's largest private charitable foundation––with the billionaire pledging more than $1.75 billion toward Covid-19 relief over the last year and a half.

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Net worth: US$97 billion
Company: Facebook

Despite some bad press in the last twelve months, Facebook CEO Mark Zuckerburg's fortune grew by more than $42 billion. With Facebook shares rising 80%, Zuckerberg has a wealth of US$97 billion, making him the fourth richest in America, and the fifth in the world.

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Net worth: US$96 billion
Company: Berkshire Hathaway

Set to turn 91 in August 2021, American business magnate, investor, philanthropist and CEO and chairman of Berkshire Hathaway is worth US$96 billion. Despite giving US$2.9 billion worth of the company's stock to charitable foundations in July 2020, Buffett is US$28.5 billion richer than last year thanks to a 36% rise in Berkshire stock.

Net worth: US$93 billion
Company: Oracle

Larry Ellison is chairman, chief technology officer and co-founder of software giant Oracle and, as of April 2021, had a reported fortune of US$93 billion. Co-founding the company in 1977, Ellison gave up the CEO role in 2014 after 37 years at the helm, though still owns about 35%.

Net worth: US$91.5 billion
Company: Google

Larry Page co-founded Google in 1998 with fellow Stanford Ph.D. student––and eighth richest man in America––Sergey Brin. Though Page stepped down as CEO of Alphabet, the parent of Google, in December 2019, he remains a board member and a controlling shareholder, with a fortune of US$91.5 billion. 

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Net worth: US$89 billion
Company: Google

Just like his Google co-founder Larry Page, Sergey Brin stepped down as president of Alphabet, parent company of Google, in December 2019 but remains a controller shareholder and a board member. Despite keeping a low profile in recent years, Brin has a fortune of US$89 billion.

Net worth: US$68.7 billion
Company: Microsoft

Former CEO of Microsoft––serving in the role from 2000 to 2014––Steve Ballmer is the ninth richest person in America with a fortune of US$68.7 billion. He still owns 4% of Microsoft's shares, with his fortune climbing by US$16 billion in the last year due to the uptick in the company's share price. He is also the current owner of the Los Angeles Clippers. 

Net worth: US$61.8 billion
Company: Walmart

The only woman in America's top ten, Alice Walton has a fortune of US$61.8 billion. The only daughter of Walmart founder Sam Walton, she and her siblings collectively own about half of the company, which is the world’s largest retailer. The company’s stock rose more than 5% in 2021, with Walton gaining US$7.4 billion in wealth. She is the world's second-richest woman, missing out on the top spot to L’Oréal heiress Bettencourt Meyers.

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