William O’Neil Net Worth (Updated 2026).

William O’Neil, a name that has become synonymous with innovative finance and investing, began his professional journey in the dynamic world of Wall Street. Born and raised in New York, O’Neil’s fascination with the stock market was sparked at an early age, a passion that would ultimately shape his life and career.

After graduating from Pace University with a degree in Business Administration, O’Neil joined EF Hutton as a stockbroker. His natural aptitude for understanding market trends and his relentless work ethic quickly set him apart. It was during this time that he developed his signature investment strategy, which he would later refine and share with the world.

William O’Neil’s Current Net Worth (2025)

As of 2025, William O’Neil’s net worth is estimated to be around $100 million. This figure reflects his successful career in investment and entrepreneurship.

Career

William O’Neil is a renowned investor and entrepreneur, best known for co-founding O’Neil Capital Management. He began his career as a stockbroker in the 1980s, later founding his own firm in 1988. O’Neil is also a prominent author, having written several books on investing, including “24 Essential Lessons for Investors”.

Other Ventures

Beyond his investment firm, O’Neil has ventured into various other businesses. He co-founded the online brokerage firm TradeMonster, which was later acquired by E*TRADE. Additionally, he has invested in and mentored several tech startups, demonstrating his diverse entrepreneurial interests.

Assets

O’Neil’s assets include a significant stake in O’Neil Capital Management, as well as real estate holdings. He owns a luxury home in Lake Tahoe, California, valued at over $10 million. His investment portfolio spans across various sectors, including technology, healthcare, and finance.

Annual Income

O’Neil’s annual income is primarily derived from his investments and the management fees from O’Neil Capital Management. While the exact figure fluctuates year to year, it’s estimated to be in the range of $10-15 million, based on his firm’s performance and the growth of his investment portfolio.

Frequently Asked Questions about  William O’Neil

Frequently Asked Questions: William O’Neil Net Worth

1. What is William O’Neil’s net worth?

William O’Neil’s net worth is estimated to be around $1.5 billion.

2. How did William O’Neil make his fortune?

William O’Neil made his fortune through his investments in various companies, including his own, O’Neil Capital Management.

3. What is O’Neil Capital Management?

O’Neil Capital Management is an investment management firm founded by William O’Neil in 1961. The firm is known for its focus on growth investing.

4. What is William O’Neil’s investment strategy?

William O’Neil is a proponent of growth investing. He looks for companies with strong earnings growth and high relative price strength.

5. What is William O’Neil’s book “How to Make a Million Dollars in the Stock Market” about?

In his book, “How to Make a Million Dollars in the Stock Market,” William O’Neil shares his investment strategies and provides practical advice on how to achieve financial independence through the stock market.

6. When was William O’Neil born?

William O’Neil was born on August 21, 1928.

7. Where did William O’Neil grow up?

William O’Neil grew up in Los Angeles, California.

8. Did William O’Neil serve in the military?

Yes, William O’Neil served in the United States Army during the Korean War.

9. What is William O’Neil’s educational background?

William O’Neil graduated from the University of Southern California with a degree in business administration.

10. What are some of the philanthropic efforts of William O’Neil?

William O’Neil has been involved in various philanthropic efforts, including supporting education and healthcare initiatives. He has also donated to organizations focused on poverty alleviation and community development.