In 2020, there were reportedly 2,095 billionaires on Earth, with an estimated total net worth of $8 trillion. Of this amount, the top five wealthiest people in the world account for $727.6 billion, or roughly 9.10%, which is impressive when you consider that they represent around 0.24% of billionaires. Below are the five individuals currently considered the wealthiest at the time of updating this article — Jan. 14, 2021 — according to Bloomberg's Billionaires Index.

Key Takeaways

  • Elon Musk is the CEO and co-founder of Tesla; CEO, leader designer, and founder of SpaceX, CEO and founder of Neuralink, and founder of The Boring Company. With an estimated net worth of $203 billion, he is the richest man in the world.
  • Jeff Bezos is the CEO and founder of Amazon, the world's largest retailer, and founder of Blue Origin. His estimated net worth is $183 billion.
  • Bill Gates is the co-founder of Microsoft, the largest software company in the world, and the co-chair of the Bill & Melinda Gates Foundation. His estimated net worth is $133 billion.
  • Bernard Arnault is the chairman and CEO of LVMH, the world's largest luxury goods business, and chairman of its holding company, Christian Dior SE. His estimated net worth is $113 billion.
  • Mark Zuckerberg is the CEO, chairman, and co-founder of Facebook, the world's largest social networking service, as well as the co-CEO and co-founder of the Chan Zuckerberg Initiative. His estimated net worth is $95.6 billion.

1. Elon Musk

  • Net Worth: $203 billion
  • Co-founder and CEO: Tesla (TSLA)
  • Tesla Ownership Stake: 20% ($145 billion)
  • Age: 49
  • Residence: Austin, Texas

The current richest man in the world, Elon Musk has had his hands in several different companies over the years. Originally enrolled at Stanford University, Musk deferred his attendance to launch Zip2, one of the earliest online navigation services. A portion of the proceeds from this endeavor were then reinvested to create X.com, an online payment system that later became PayPal. While both of these systems were eventually sold to other companies, Musk has maintained his status as CEO and lead designer for his third project, SpaceX, which aims to make space exploration more affordable.

In 2004, he became a major funder of Tesla Motors (now Tesla), which led to him being retroactively declared a co-founder and his current position as CEO of the electric vehicle company. In addition to its line of electric automobiles, which include sedans, sport utility vehicles (SUVs), and the "Cybertruck" announced in 2019, Tesla also produces energy storage devices, automobile accessories, merchandise, and, through its acquisition of SolarCity in 2016, solar power systems.

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Image courtesy Getty Images/Saul Martinez.

In 2016, Musk founded two more companies, Neuralink and The Boring Company, with him serving as the CEO of the former. Neuralink is developing brain-machine interface devices to help individuals suffering from paralysis and potentially allow users to mentally interact with their computers and mobile devices. The Boring Company, meanwhile, develops boring machines for the purpose of drilling tunnels for underground public transportation systems, which would mitigate traffic congestion in major cities. It also (briefly) sold a handheld flamethrower.

2. Jeff Bezos

  • Net Worth: $183 billion
  • Founder and CEO: Amazon (AMZN)
  • Amazon Ownership Stake: 11.1% ($166 billion)
  • Age: 57
  • Residence: Seattle, Wash.

In 1994, Jeff Bezos founded Amazon.com in a garage in Seattle, shortly after he resigned from the hedge fund giant D.E. Shaw.  In fact, he had originally pitched the idea of an online bookstore to his former boss David E. Shaw, who wasn't interested.

Though Amazon.com originally started out selling books, it has since morphed into a one-stop-shop for everything under the sun, and is arguably the world's largest retailer. At any rate, it is hard to dispute its self-description as the "earth's most customer-centric company." Its pattern of constant diversification is evident in some of its unexpected expansions, which include acquiring Whole Foods in 2017 and launching its own branded over-the-counter drugs in Feb. 2018. 

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Image courtesy Getty Images/Alex Wong.

Bezos took Amazon public in 1997 and went on to become the first man since Bill Gates in 1999 to achieve a net worth of more than $100 billion.  Bezos's other projects include aerospace company Blue Origin; The Washington Post, which he purchased in 2013; and the 10,000-year clock, also known as the Long Now.

3. Bill Gates

  • Net Worth: $133 billion
  • Co-Founder: Microsoft Corp. (MSFT)
  • Microsoft Ownership Stake: 1.3% ($22.2 billion)
  • Age: 65
  • Residence: Medina, Wash.

While attending Harvard University in 1975, Bill Gates went to work alongside his childhood friend Paul Allen to develop new software for the original microcomputers. Following this project's success, Gates dropped out of Harvard in his junior year and went on to found Microsoft alongside Allen.

In addition to being the the largest software company in the world, Microsoft also produces its own line of personal computers, publishes books through Microsoft Press, provides email services through its Exchange server, and sells video game systems and associated peripheral devices. Originally Microsoft's chief software architect, Gates later transitioned to the role of the chairman in 2008. He had joined Berkshire Hathaway's board in 2004. He later stepped down from both boards on March 13, 2020.

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Image courtesy Getty Images.

In 2000, Gates' two philanthropic organizations—the William H. Gates Foundation and the Gates Learning Foundation—were merged to create the Bill & Melinda Gates Foundation, of which he and his wife, Melinda Gates, are co-chairs. Through the foundation, he has spent billions to fight polio and malaria. Additionally, he pledged $50 million in 2014 to help fight Ebola. In 2020, the foundation promised to spend $300 million to combat the COVID-19 pandemic.

4. Bernard Arnault and Family

  • Net Worth: $113 billion
  • CEO and Chairman: LVMH
  • Christian Dior Ownership Stake: 97.5% ($99.1 billion)
  • Age: 71
  • Residence: Paris, France

French national Bernard Arnault is the chairman and CEO of LVMH, the world's largest luxury goods company. This business owns some of the biggest brands on earth, including Louis Vuitton, Hennessey, Marc Jacobs, Sephora, and many more. The majority of his wealth, however, actually comes from his massive stake in Christian Dior SE, the holding company that controls 41.2% of LVMH. His shares in Christian Dior SE, plus an additional 6.2% in LVMH, are themselves held through his family-owned holding company Group Arnault S.E.

An engineer by training, Arnault's business chops became apparent while working for his father's construction firm, Ferret-Savinel, which he would take control of in 1971. He later converted Ferret-Savinel to a real estate company named Férinel Inc. in 1979.

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Image courtesy Getty/Christophe Morin.

Arnault remained Férinel's chairman for another six years, until he acquired and reorganized luxury goods maker Financière Agache in 1984, eventually selling all of its holdings other than Christian Dior and Le Bon Marché. He was invited to invest in LVMH in 1987 and would become the majority shareholder, chairman of the board, and CEO of the company two years later.

5. Mark Zuckerberg

  • Net Worth: $95.6 billion
  • Co-founder, CEO, and Chairman: Facebook 
  • Facebook Ownership Stake: 13% ($92.4 billion)
  • Age: 36
  • Residence: Palo Alto, Calif.

Mark Zuckerberg first developed Facebook alongside fellow students Eduardo Saverin, Dustin Moskovitz, and Chris Hughes while attending Harvard University in 2004. As Facebook began to be used at other universities, Zuckerberg dropped out of Harvard to focus entirely on his growing business. Today, Zuckerberg is the CEO and chairman of Facebook, which had more than 2.7 billion monthly active users as of Q3 2020.

Facebook is the world's largest social networking service, enabling its users to create a personal profile, connect with friends and family, join or create groups, and much more. As the website is free to use, most of the company's revenue is generated through advertising. Facebook (the company) is also host to several other brands, including photo-sharing app Instagram, which it acquired in 2012; cross-platform mobile messaging service WhatsApp and virtual reality headset-producer Oculus, both acquired in 2014; Workplace, its enterprise connectivity platform; Portal, its line of video-calling devices; and Novi, its digital wallet for the Diem payment system.

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Image courtesy Getty Images/Paul Marotta.

Zuckerberg and his wife, Priscilla Chan, founded the Chan Zuckerberg Initiative in 2015, with each of them serving as co-CEO. Their charity seeks to leverage technology in order to fix societal ills, such as improving the access and quality of education, reforming both the criminal justice system and the United States immigration system, improving housing affordability, and eventually eradicating all diseases.

The Bottom Line

If you want to get a little closer to making Bloomberg's richest billionaires list, then you might need to become a technological innovator or a retail king. Or you can keep it simple and focus on value investing. It also wouldn't hurt to inherit a large sum, as some of the world's wealthiest people have. It also wouldn't hurt to have money at the start, as Arnault and other wealthy individuals, such as Jim Walton (#16 on Bloomberg's Billionaire Index) and Charles Koch (#19), did. However, the greatest fortunes on the list started as great ideas.