LeaderPortfolio
Dorsey
Jack Dorsey
Rank #665
UNITED STATESSocial MediaTwitter, Square

Jack Dorsey

Net Worth
$6.056B
-1.32% (24h)
Jack Dorsey is a prominent American businessman, entrepreneur, and philanthropist, best known as the co-founder of Twitter (now X) and the founder and chairman of Block, Inc. (formerly Square). Born in St. Louis, Missouri, on November 19, 1976, Dorsey's career has been marked by innovation in the tech industry. His source of wealth stems from his ventures in Twitter and Square, with a current estimated net worth of $5.7 billion. Dorsey is recognized for his leadership and contributions to the fields of social media and financial technology.

How to read Jack Dorsey's profile

Public net-worth figures are estimates. They combine observable inputs—typically listed equity, disclosed transactions, and market prices—with editorial judgment where filings are incomplete (for example, private holdings, debt, or cross-holdings). For Jack Dorsey, we anchor the narrative to Twitter and Twitter, Square, then update the headline number as markets move. The chart on this page is meant to show trajectory, not a certified balance sheet.

When you see $6.056B alongside global rank #665, interpret it as our best synthesis of widely cited ownership and price signals—not a claim about cash on hand. Estimates can diverge from other publishers because of different treatment of options, trusts, charitable vehicles, or illiquid assets. We document the general approach in methodology and welcome corrections via corrections.

Country (UNITED STATES) and career milestones on this page are curated for reader context; they should be verified against primary sources when used for research. Editorial metadata for this profile is refreshed on a rolling basis, with deeper audits at least annually (last noted cycle: 2026).

Looking for depth? When available, the dossier and timeline sections below add long-form context beyond the headline number—prioritize those modules when evaluating claims about strategy, controversies, or philanthropic commitments.

The Full Dossier

Early Life

Jack Dorsey was born and raised in St. Louis, Missouri. From a young age, he showed a keen interest in computers and communication. He attended Bishop DuBourg High School and developed software for dispatch logistics, which was used by taxicab companies. He briefly attended the University of Missouri–Rolla and later transferred to New York University, but dropped out before graduating to focus on his entrepreneurial pursuits.

Rise to Success

Dorsey's breakthrough came with the co-founding of Twitter in 2006, which quickly became a global platform for real-time communication. He served as CEO of Twitter from 2007 to 2008, and again from 2015 to 2021. In 2009, Dorsey co-founded Square (now Block, Inc.), a financial services and mobile payment company. Square's success further solidified his position in the tech industry.

Key Business Strategies

Dorsey is known for his focus on simplicity and user experience. He emphasized iterative product development and a commitment to details. His leadership style often included an emphasis on decentralization and empowering users. He stepped down as Twitter CEO in 2021, which allowed him to focus on Block, Inc. and Bitcoin initiatives. Dorsey has also shown a strong interest in the future of the internet and open-source development.

Philanthropy

Dorsey has engaged in significant philanthropic efforts, notably through his #startsmall initiative. In 2020, he committed to donating $1 billion (28% of his wealth) to various causes, including COVID-19 relief, girls' health and education, and universal basic income programs. He has made several donations to organizations like Water.org and Good Sports.

Career Timeline

2021

Stepped down as Twitter CEO

Focused on Block, Inc. and other ventures.

2015

Returned as Twitter CEO

Returned as the CEO of Twitter and led the company for six more years.

2012

Named Innovator of the Year

Received the Innovator of the Year Award from the Wall Street Journal for his work in technology.

2009

Co-founded Square (now Block, Inc.)

Launched a financial services company focused on mobile payments.

2006

Co-founded Twitter

Co-founded the social media platform that revolutionized communication.

Philanthropic Impact

Various$1B

#StartSmall

A philanthropic initiative focused on global COVID-19 relief, girls' health and education, and efforts toward Universal Basic Income.

Global Health$4.7M

Water.org

Donation to Water.org to provide access to safe water and sanitation as part of his #StartSmall initiative.

Youth Development$1M

Camp Fire

Donation to support inclusive youth development and expanding opportunities.

Youth Sports$1M

Good Sports

Funds will support the She Who Plays initiative which focuses on creating gender equity in youth sports.

Key Business Ventures & Holdings

CompanyStakeValue
Block, Inc.1.08%$2.5M

Net Worth History

In-Depth Analysis

Early Life

Jack Dorsey was born and raised in St. Louis, Missouri. From a young age, he showed a keen interest in computers and communication. He attended Bishop DuBourg High School and developed software for dispatch logistics, which was used by taxicab companies. He briefly attended the University of Missouri–Rolla and later transferred to New York University, but dropped out before graduating to focus on his entrepreneurial pursuits.

Rise to Success

Dorsey's breakthrough came with the co-founding of Twitter in 2006, which quickly became a global platform for real-time communication. He served as CEO of Twitter from 2007 to 2008, and again from 2015 to 2021. In 2009, Dorsey co-founded Square (now Block, Inc.), a financial services and mobile payment company. Square's success further solidified his position in the tech industry.

Key Business Strategies

Dorsey is known for his focus on simplicity and user experience. He emphasized iterative product development and a commitment to details. His leadership style often included an emphasis on decentralization and empowering users. He stepped down as Twitter CEO in 2021, which allowed him to focus on Block, Inc. and Bitcoin initiatives. Dorsey has also shown a strong interest in the future of the internet and open-source development.

Philanthropy

Dorsey has engaged in significant philanthropic efforts, notably through his #startsmall initiative. In 2020, he committed to donating $1 billion (28% of his wealth) to various causes, including COVID-19 relief, girls' health and education, and universal basic income programs. He has made several donations to organizations like Water.org and Good Sports.

Data Sources & Methodology

Figures for Jack Dorsey are synthesized from the sources below and cross-checked against our net worth methodology. Estimates may lag market moves; see corrections to report discrepancies.