LeaderPortfolio
Hongyi
Zhou Hongyi
Rank #1925
CHINATechnologySecurity software

Zhou Hongyi

Net Worth
$2.144B
-3.17% (24h)
Zhou Hongyi is a prominent Chinese entrepreneur and the co-founder, chairman, and CEO of Qihoo 360, a leading internet security company. Born on October 4, 1970, he is a self-made billionaire, with a net worth of $2.6 billion as of 2024. His wealth stems from his successful career in the technology industry, specifically in security software. Zhou's career includes founding 3721.com, which was later acquired by Yahoo, where he served as president of Yahoo China. He is recognized for pioneering the freemium model in cybersecurity and his significant contributions to China's internet landscape.

How to read Zhou Hongyi'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 Zhou Hongyi, we anchor the narrative to Security software and Security software, 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 $2.144B alongside global rank #1925, 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 (CHINA) 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

Zhou Hongyi was born on October 4, 1970, in Huanggang, Hubei, China. He obtained a master's degree from Xi'an Jiaotong University. Not much is known about his early life and childhood.

Rise to Success

Zhou's career began with the founding of 3721 in 1998, a search engine that sold Chinese-language keywords for Roman-alphabet domain names. 3721 was later acquired by Yahoo! in 2004 for $120 million, with Zhou heading Yahoo! China's operations. However, due to strategic differences, he left Yahoo to start Qihoo 360 in 2005. Qihoo 360 quickly grew to become one of China's leading internet security companies, offering free antivirus software. Zhou pioneered the freemium model, providing core services for free while generating revenue through value-added services and advertising. Qihoo 360 went public on the New York Stock Exchange in 2011, and later relisted on the Shanghai Stock Exchange in 2018.

Key Business Strategies

Zhou's key business strategies involved focusing on internet security solutions and the freemium model. This approach allowed Qihoo 360 to gain a large user base and challenge established players in the market. He also expanded Qihoo 360 into areas such as AI and IoT security.

Philanthropy

Information on Zhou Hongyi's specific philanthropic initiatives and amounts could not be found through the search. However, as of April 2023, Zhou's ex-wife, Hu Huan, received a $1.3 billion share of the company in a divorce settlement, which indicates his level of wealth.

Career Timeline

2018

Relisted Qihoo 360

Relisted Qihoo 360 on the Shanghai Stock Exchange.

2011

Qihoo 360 IPO

Led Qihoo 360's IPO on the New York Stock Exchange.

2005

Co-founded Qihoo 360

Co-founded Qihoo 360, a leading internet security company.

2004

CEO of Yahoo! China

Headed Yahoo! China's operation after 3721.com was acquired.

1998

Founded 3721.com

Founded 3721.com, a search engine which sold Chinese-language keywords.

Philanthropic Impact

PhilanthropyUndisclosed

Unknown

Specific philanthropic contributions are not readily available.

Key Business Ventures & Holdings

CompanyStakeValue
360 Security Technology Inc.

Net Worth History

In-Depth Analysis

Early Life

Zhou Hongyi was born on October 4, 1970, in Huanggang, Hubei, China. He obtained a master's degree from Xi'an Jiaotong University. Not much is known about his early life and childhood.

Rise to Success

Zhou's career began with the founding of 3721 in 1998, a search engine that sold Chinese-language keywords for Roman-alphabet domain names. 3721 was later acquired by Yahoo! in 2004 for $120 million, with Zhou heading Yahoo! China's operations. However, due to strategic differences, he left Yahoo to start Qihoo 360 in 2005. Qihoo 360 quickly grew to become one of China's leading internet security companies, offering free antivirus software. Zhou pioneered the freemium model, providing core services for free while generating revenue through value-added services and advertising. Qihoo 360 went public on the New York Stock Exchange in 2011, and later relisted on the Shanghai Stock Exchange in 2018.

Key Business Strategies

Zhou's key business strategies involved focusing on internet security solutions and the freemium model. This approach allowed Qihoo 360 to gain a large user base and challenge established players in the market. He also expanded Qihoo 360 into areas such as AI and IoT security.

Philanthropy

Information on Zhou Hongyi's specific philanthropic initiatives and amounts could not be found through the search. However, as of April 2023, Zhou's ex-wife, Hu Huan, received a $1.3 billion share of the company in a divorce settlement, which indicates his level of wealth.

Data Sources & Methodology

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