1. Bill Gates

The co-founder of Microsoft, tech magnate, entrepreneur, philanthropist, programmer, Bill Gates has a solid profile that makes him the richest individual, his worth marked $86 billion. Also the founder of Bill & Melinda Gates Foundation, Gates has made strides in every sphere he has touched. He stepped down as CEO of Microsoft in 2000 and as Chairman in 2008. Currently, he works full-time at the Bill & Melinda Gates Foundation and is the technology adviser to the current CEO Satya Nadella.

2. Warren Buffett

The most successful investor in the world, Buffett is also a business magnate and a philanthropist, valued at $75.6 billion. He is the CEO and the largest shareholder of Berkshire Hathway, the American multinational conglomerate holding company. Buffett, the third richest person in the world, is often referred to as the “Wizard of Omaha” or “Oracle of Omaha,” or the “Sage of Omaha,”and is noted for his adherence to value investing and for his personal frugality despite his immense wealth.

3. Jeff Bezos

Founder chairman and the largest shareholder of the online shopping giant Amazon, Bezos is an American technology entrepreneur and investor, valued at $63.1 billion, the fourth richest person in the world. Bezos' other business interests include aerospace and newspapers. He is the founder and owner of the privately-funded aerospace developer and manufacturer Blue Origin. Founded in 2000, the company has conducted test flights to space beginning in 2015, and plans for commercial suborbital human spaceflight beginning in 2018. He also purchased The Washington Post newspaper in 2013.

4. Mark Zuckerberg

Zuckerberg, co-founder and CEO of Facebook, is the eight richest person in the world valued at $49.7 billion. American programmer, Internet entrepreneur, and philanthropist, he founded Facebook from his college dorm room in Harvard. The website later expanded rapidly with one billion users signing up by 2012.

5. Larry Ellison

American businessman Larry Ellison is co-founder of Oracle Corporation and was CEO until September 2014. Valued at $43.4 billion, he is currently the ninth richest person in the world. Currently, he is the executive chairman and chief technology officer of Oracle. Ellison has donated up to 1% of his wealth to charity and has signed The Giving Pledge.

6/7. David and Charles Koch

Brother of Charles Koch, David Koch is the Executive Vice President of Koch Industries. Valued the same as his brother at $55.2 billion, David is the sixth richest person in the world. David also owns 42% of the conglomerate that the brother inherited from their father and then expanded.

8. Michael Bloomberg

Michael Bloomberg is the eighth richest person in America. Reportedly worth up to $37.5 billion, he's pledged half of his fortune to charity after his death. For over a decade, he served as New York City mayor earning only $1 dollar a year. Before that, he made billions through the company he founded, Bloomberg LP, and its Bloomberg Terminal financial software.