The top 50 billionaire inventors

Mark Cuban – Estimated Net Worth Today: $4.6B.

In 1995, Mark Cuban co-founded the video portal Broadcast.com with Todd Wagner; his fellow Indiana University alum. They sold to Yahoo in 1999 for a staggering $5.7 billion.

Currently, he owns the NBA’s Dallas Mavericks. He has interests in numerous ventures such as Magnolia Pictures, AXS TV, and many small startups.

As a youngster, Cuban sold stamps door-to-door and taught disco dancing to pay for his education at Indiana University.

Cuban was inspired to strike out on his own when he was fired from a software shop for closing a $15,000 sale instead of cleaning up the store.

Cuban invests in mission-driven companies such as Luminaid, which provides lighting to disaster areas, and Mahmee, a maternal healthcare tech company, among others.