Gabe Newell Net Worth

Gabe Newell has an estimated net worth of $10.2 billion, according to Forbes Real-Time Billionaires, Gabe Newell profile (figures as of October 20, 2026). That is up from $3.9 billion in 2019.

Gabe Newell is an American video game developer and businessman best known as the cofounder and president of Valve. Before that, he joined Microsoft after leaving Harvard and became the company's 271st employee, hired by Steve Ballmer. At Microsoft, he helped create the first versions of Windows and led development on a Windows 95 port of Doom. That mix of software and games set up his next move.

In 1996, Newell left Microsoft with Mike Harrington to start Valve and fund its first game, Half-Life, released in 1998. Valve later followed with games including Portal and built Steam, its digital game platform, which launched in 2003. Steam became a central place for buying, selling, and playing PC games. Forbes says Newell is self-made, works in Media & Entertainment, and had $10.2 billion on its real-time tracker on October 20, 2026.

How Gabe Newell built his wealth

Most of Newell's wealth comes from Valve, the game company he cofounded in 1998 with former Microsoft colleague Mike Harrington. Valve found early success with games such as Half-Life and Portal. It also created Steam, a digital platform that became a major force in PC game sales. Forbes estimates that Newell owns at least one half of Valve, which operates out of Bellevue, Washington.

Steam is the key business behind Valve's scale. The service launched in 2003 and by 2011 controlled most of the market for downloaded PC games, according to the background facts. Forbes notes that Steam reached 1 billion accounts in 2019 and keeps setting active user records. Valve also expanded its hardware business with the Steamdeck in 2022, a hand-held console that lets players access a wide range of Steam titles on a portable device.

Forbes net worth timeline

Forbes has tracked Newell's fortune through several shifts. Its World's Billionaires list put him at $3.9 billion in 2019, then $3.5 billion in 2020. The estimate moved to $4.1 billion in 2021, then $3.9 billion in 2022 and again in 2023. In 2024, Forbes raised the figure to $4.3 billion. Those estimates line up with Valve's strong position in PC gaming and Steam's large user base.

The biggest jump came later. Forbes increased Newell's estimate to $9.5 billion in 2025 and then to $11 billion in 2026 on its annual billionaires list. On Forbes' real-time billionaires tracker, he stood at $10.2 billion in October 2026. Forbes ties his fortune to video games, especially Valve's ownership structure, Steam's scale, and Newell's stake of at least one half in the company.