Jeffrey Preston Bezos (born January 12, 1964) is an internet entrepreneur, industrialist, media proprietor, businessman, and investor. He is known as the founder, CEO, and president of the Amazon multinational technology company Amazon. The first centi- billionaire on the Forbes Wealth Index, has been the world's richest person since 2017 and was named the "the richest man in modern history" after his net worth increased to $ 150 billion in July. 2018. In September 2018, Forbes described him as "far richer than anyone on the planet", as he added $1.8 billion to his net worth when Amazon became the second company in history to have a market cap of $ 1 trillion.
Bezos was born in Albuquerque, raised in Houston and later Miami, and graduated from Princeton University in 1986 with a degree in Electrical Engineering and Computer Science. He worked on Wall Street in a variety of related fields from 1986 to early 1994. He founded Amazon in late 1994 on a cross-country road trip between New York City and Seattle. The company began as an online bookstore and has since expanded to a wide variety of other e-commerce products and services, including video and audio streaming, cloud computing and AI. It is currently the world's largest online sales company, the largest internet company by revenue, and the world's largest provider of virtual assistants and cloud infrastructure services through its Amazon Web Services branch.
William Henry Gates III (born October 28, 1955) is an American businessman, software developer, investor, and philanthropist. He is known as the co-founder of Microsoft Corporation. During his career at Microsoft, Gates worked as (CEO), President and Chief Software architect, and also being the largest shareholder until May 2014. He is one of the best-known entrepreneurs and pioneers of the microcomputer revolution in the 1970s and 1980s.
Born and raised in Seattle, Washington, Gates co-founded Microsoft with his childhood friend Paul Allen in 1975 in Albuquerque, New Mexico. It went on to become the world's largest personal computer software company. Gates led the company as chairman and CEO until stepping down as CEO in January 2000, but he remained president and became a chief software engineer. In the late 1990s, Gates was criticized for his trade tactics, which were considered anti-competitive. This opinion has been confirmed by several court decisions.  In June 2006, Gates announced that he would move to a part-time job at Microsoft and would work full-time at the Bill and Melinda Gates Foundation, a private charity founded by him and his wife Melinda Gates in 2000. Gradually, he transferred his duties to Ray Ozzie and Craig Mundie. He stepped down as Microsoft in February 2014 and assumed a new role as technology adviser to support newly appointed CEO Satya Nadella.
Warren Edward Buffett (born August 30, 1930) is an American investor, businessman, and philanthropist and, chairman and CEO of Berkshire Hathaway. He is considered one of the most successful investors in the world and has a net worth of US$88.9 billion as of December 2019, making him the fourth richest person in the world.
Buffett was born in Omaha, Nebraska. He developed an interest in business and invested in his youth, and finally entered the Wharton School of the University of Pennsylvania in 1947 before transferring to and graduating from the University of Nebraska at the age of 19. He went on to graduate from Columbia Business School, where he molded his investment philosophy about the concept of value investing invented by Benjamin Graham. He attended the New York Institute of Finance to focus his expertise in economics, and soon after he began several business partnerships, including one with Graham. He founded the Buffett Limited Partnership in 1956 and his company eventually acquired a textile manufacturing company called Berkshire Hathaway and took its name to create a diversified holding company. In 1978, Charlie Munger joined Buffett and became vice-chairman of the company.
Buffett has been the chairman and largest shareholder of Berkshire Hathaway since 1970. He has been referred to as "Oracle" or "Sage" by Omaha by global media outlets. He is noted for his adherence to the value of the investment and his personal upturn despite his tremendous wealth. The research published at Oxford University describes the Buffett investment methodology as part of "Establishing Moderation", which is determined by the managers ’respect for the founder’s mentality, ethical behavior toward the group of shareholders, and an intense focus on creating exponential value. Basically, Buffett's focused investments protect managers from short-term market pressures.
Mark Elliot Zuckerberg (born May 14, 1984) is an American media tycoon, internet entrepreneur, and philanthropist. He is known for co-founding, Facebook Inc. and serves as its chairman, chief executive officer, and controlling shareholder. He also is a co-founder of the Breakthrough Starshot solar spacecraft development project and serves as one of its board members.
Zuckerberg, born in White Plains, New York, attended Harvard University, where he launched Facebook Facebook social networking service from his dormitory room on February 4, 2004, with his college roommates Eduardo Saffren, Andrew McCollum, Dustin Moskowitz, and Chris Hughes. Originally launched to select college campuses, the site expanded rapidly and eventually overtook universities, and reached one billion users in 2012. Zuckerberg became a year in the company in May 2012 with majority shares. His net worth is estimated at nearly $ 54 billion as of March 2020. In 2007, at the age of 23, he became the youngest self-made billionaire in the world. As of 2019, he's the only person under the age of 50 on the Forbes 10 richest list, and the only person under the age of 40 on the Top 20 Billionaires list.
Since 2010, Time Zuckerberg has been ranked among the world's 100 richest and most influential people as part of the Personality of the Year award. In December 2016, Zuckerberg ranked 10th on the Forbes list of the world's strongest people.
Michael Rubens Bloomberg (born February 14, 1942) is an American businessman, politician, philanthropist, and author. He is the majority owner and co-founder of Bloomberg L.P. He was the mayor of New York City from 2002 to 2013 and was a candidate in the Democratic presidential primaries for 2020.
Bloomberg grew up in Medford, Massachusetts, and graduated from Johns Hopkins University and Harvard Business School. He started his career at the brokerage firm Salomon Brothers before establishing his own company in 1981. This company, Bloomberg L.P., is a financial information, software, and media company known for its Bloomberg station. Bloomberg spent the next twenty years as President and CEO. In 2019, Forbes ranked him ninth among the world's richest people, with a net worth of $ 55.5 billion. Since the signing of the tender pledge, Bloomberg has donated $ 8.2 billion.
Bloomberg was elected108th mayor of New York City. He was first elected in 2001, took office for three consecutive terms, and won re-election in 2005 and 2009. After socially liberal and financially moderate policies, Bloomberg developed a technocratic management style. After a short period of full-time charity work, he resumed the position of CEO at Bloomberg L.P. In late 2014.
As the mayor of New York, Bloomberg established charter public schools, rebuilt urban infrastructure, and supported arms control, public health initiatives, and environmental protection. He also led the reorganization of large areas of New York City, facilitating large-scale commercial and residential construction after the September 11 attacks. Bloomberg is considered to have a far-reaching influence on politics, business, and culture in New York City during his three terms as mayor. She also faced heavy criticism for expanding the detention and search program in the city.
In November 2019, Bloomberg officially launched its campaign for the Democratic presidential nomination in the 2020 elections. He ended his campaign in March 2020, after winning only 61 delegates. Bloomberg self-funded $ 935 million in the initial campaign, setting the record for the most expensive presidential election campaign in the United States.
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