Mark Cuban (born July 31, 1958) is an American billionaire entrepreneur, television personality, and media proprietor whose net worth is an estimated $4.3 billion, according to Forbes, and ranked #177 on the 2020 Forbes 400 list. He is the owner of the Dallas Mavericks professional basketball team of the National Basketball Association (NBA), co-owner of 2929 Entertainment. He is also one of the main "shark" investors on the ABC reality television series Shark Tank. On July 7, 1982, Cuban moved to Dallas, Texas, where he first found work as a bartender for a Greenville Avenue bar called Elan and then as a salesperson for Your Business Software, one of the earliest PC software retailers in Dallas. He was fired less than a year later, after meeting with a client to procure new business instead of opening the store. Cuban started his own company, MicroSolutions, with help from his previous customers from Your Business Software. MicroSolutions was initially a system integrator and software reseller. The company was an early proponent of technologies such as Carbon Copy, Lotus Notes, and CompuServe. One of the company's largest clients was Perot Systems. The company grew to more than $30 million in revenue, and in 1990, Cuban sold MicroSolutions to CompuServe—then a subsidiary of H&R Block—for $6 million. He made approximately $2 million after taxes on the deal.