At 51 years old and with a net worth of $250 million as of 2025, Biz Stone has built much more than a tech empire—he’s created a blueprint for combining innovation with impact. Best known as one of the co-founders of Twitter, Stone’s career has gone far beyond social media. He’s launched platforms like Medium, Jelly, and Obvious Corporation, invested in mission-driven companies, and used his success to support causes he deeply cares about.
So, how did a design-loving kid from Massachusetts become one of Silicon Valley’s most influential entrepreneurs?
What Is Biz Stone’s Net Worth and How Did He Earn It?
Biz Stone’s estimated net worth is $250 million. While the bulk of that wealth stems from his involvement with Twitter, Stone has also made savvy moves in:
- Angel investing
- Startup building (Medium, Jelly, Chroma)
- Speaking and publishing
- Serving on high-value boards, including Beyond Meat
Stone was instrumental in co-founding Twitter in 2006, which later went public and became a global communication force. He exited day-to-day operations in 2011 but retained equity and influence in the tech space. Over the years, he’s built a financial portfolio that mirrors his values: tech for good.
What Was Biz Stone’s Early Life Like?
Biz Stone was born Christopher Isaac Stone in Boston, Massachusetts, in 1974. Raised in Wellesley by a single mother after his parents divorced, Stone’s upbringing was humble. He developed an early passion for art, creativity, and storytelling, interests that would heavily shape his approach to product design and user experience later on.
Although he briefly attended Northeastern University and the University of Massachusetts Boston, Stone left before completing a degree. He’s since credited his early college years with helping him embrace out-of-the-box thinking—a skill that’s served him well in the unpredictable world of tech startups.
How Did Biz Stone Get His Start in Tech?
Stone got his professional start at Little, Brown and Company, a publishing house, before diving head-first into the early days of the internet. In the late ’90s, he joined Xanga, a blogging platform that introduced him to the potential of digital communities.
His big break came in 2003, when he joined Google to help refine Blogger, one of the earliest and most influential blog platforms. It was here that he met Evan Williams, and the two would go on to collaborate on what would become one of the most revolutionary digital platforms of the 21st century: Twitter.
How Did Biz Stone Help Create Twitter?
In 2006, Stone, Williams, and Jack Dorsey co-founded Twitter, originally conceived as a way to share quick status updates. Stone’s role wasn’t just technical—he brought a deep focus on design, branding, and the human side of technology. He’s credited with helping shape many of the platform’s most iconic features, like the @ mention and hashtag culture.
Serving as Creative Director, Stone helped turn Twitter from a quirky idea into a global communication powerhouse, used by presidents, pop stars, and protesters alike. By the time he stepped back in 2011, Twitter had become a cultural phenomenon.
What Did Biz Stone Do After Twitter?
Post-Twitter, Stone didn’t slow down. Instead, he doubled down on building platforms with purpose:
- Obvious Corporation: An innovation lab he restarted with Evan Williams
- Medium (2012): A publishing platform for thoughtful, long-form content
- Jelly (2013): A Q&A search engine acquired by Pinterest in 2017
- Chroma: A visual search engine that organizes content by color
Stone also became an angel investor and advisor, backing socially conscious brands like Beyond Meat, where he served on the board. His venture fund, Obvious Ventures, focuses on companies that align profit with purpose.
What Causes and Charities Does Biz Stone Support?
Biz Stone is more than just a tech founder—he’s a committed philanthropist and social advocate. Through the Biz and Livia Stone Foundation, he and his wife support a range of causes, including:
- Environmental sustainability
- Animal rights
- Education access
- LGBTQ+ and civil rights initiatives
He’s a strong believer in using wealth and influence to uplift communities and promote ethical business practices. His memoir, “Things a Little Bird Told Me,” reflects this philosophy—blending personal stories with life lessons on creativity and resilience.
What Is Biz Stone’s Personal Life Like?
Biz has been married to Livia Stone since 2007, and they share a son named Jacob. The family resides in Marin County, California, living a quiet life away from the Silicon Valley spotlight.
Despite his massive success, Stone is known for being humble, funny, and deeply values-driven. He’s also a vegetarian and supports several plant-based initiatives, reinforcing his commitment to sustainability both professionally and personally.
What’s Next for Biz Stone?
Though not in the daily headlines like some of his co-founders, Stone continues to work behind the scenes on early-stage companies, invest in tech-for-good startups, and speak at global events on technology, ethics, and creativity.
He’s one of the few in the tech space who consistently champions humanity just as much as innovation—a voice that’s increasingly vital in today’s digital world.
