Irwin Jacobs, cofounder and former CEO of Qualcomm, is a pioneering engineer and entrepreneur who helped revolutionize wireless communications. After an academic career at MIT and UC San Diego, he launched Qualcomm in 1985, driving the development and commercialization of CDMA technology, which became the global standard for mobile networks. Under his leadership, Qualcomm grew into a multibillion-dollar powerhouse at the heart of the mobile phone industry. Beyond technology, Jacobs is a noted philanthropist, supporting education, science, and the arts, particularly in San Diego, where his contributions have had lasting civic impact.

Irving Grousbeck, entrepreneur, investor, and academic, is best known as cofounder of Continental Cablevision, which grew into one of the largest cable television companies in the United States before its sale to US West. After his success in media, he became a prominent figure in academia, serving as a professor at Harvard Business School and later at Stanford Graduate School of Business, where he helped launch the school’s Center for Entrepreneurial Studies. Grousbeck is also a co-owner of the NBA’s Boston Celtics and remains influential in shaping both the entrepreneurial and investment landscapes.

Ira Rennert, billionaire industrialist, is the founder of Renco Group, a private holding company with investments in mining, metals, manufacturing, and defense. Starting in the 1970s with junk bonds, he expanded into heavy industry, building a diversified empire that has included steel, magnesium, and automotive companies. Known for his controversial business practices as well as his immense wealth, Rennert also drew attention for constructing one of the largest private homes in the United States, the 62,000-square-foot Fair Field estate in the Hamptons. Despite criticism, he remains a powerful and enduring figure in American industry and finance.

Herbert Wertheim, optometrist, inventor, and investor, built his fortune through a mix of innovation in vision care and shrewd long-term investing. Founder of Brain Power Inc., he developed tints and protective coatings for eyeglass lenses that became widely adopted in the optical industry. Beyond his business, Wertheim amassed a multibillion-dollar portfolio by investing early in companies like Apple, Microsoft, and Intel, often reinvesting dividends over decades. A noted philanthropist, he has pledged much of his wealth to education, science, and medical research, cementing his legacy as both a pioneer and a benefactor.

Herbert Simon, billionaire real estate developer, is chairman emeritus of Simon Property Group, the largest shopping mall operator in the United States. Alongside his late brother Melvin, he expanded the Indianapolis-based company into a global retail real estate powerhouse, with hundreds of malls and premium outlets worldwide. Under his leadership, Simon Property Group grew into a publicly traded giant and a bellwether of the retail industry. Beyond real estate, Simon is also known as owner of the NBA’s Indiana Pacers and as a philanthropist supporting education, culture, and community development.

Henry Jarecki, psychiatrist-turned-financier, built his fortune through trading and investment ventures after an early career in medicine. He founded and led several successful commodities and securities firms, including Mocatta Metals and Brody White & Co., becoming a prominent figure in the global precious metals market. Beyond finance, Jarecki has been a dedicated philanthropist and supporter of scientific research, education, and cultural initiatives, channeling his wealth into causes ranging from marine conservation to academic institutions. His unique path from medicine to markets highlights both intellectual range and entrepreneurial vision.

Harry Macklowe, New York real estate developer and art collector, is known for bold, high-stakes deals that reshaped the Manhattan skyline. Founder of Macklowe Properties, he developed iconic projects such as 432 Park Avenue, one of the tallest residential towers in the Western Hemisphere. His career has been marked by both spectacular successes and dramatic setbacks, including a leveraged $7 billion office portfolio purchase in 2007. Beyond real estate, Macklowe gained global attention for his blue-chip art collection, reinforcing his image as one of New York’s most colorful and audacious moguls.

Hansjörg Wyss, Swiss billionaire and philanthropist, built his fortune through medical device maker Synthes, which he sold to Johnson & Johnson for nearly $20 billion in 2012. An engineer by training, Wyss expanded Synthes into a global leader in orthopedic implants before turning his focus to large-scale philanthropy. Through the Wyss Foundation, he has committed billions to environmental conservation, scientific research, and public interest journalism, becoming one of the world’s most influential advocates for protecting wild lands and advancing sustainable solutions.

George Soros, legendary investor and philanthropist, made his fortune through the Quantum Fund, which delivered outsized returns and cemented his reputation as one of the greatest hedge fund managers of all time. Famous for “breaking the Bank of England” in 1992 with a $1 billion profit bet against the pound, he later shifted his focus toward global philanthropy, channeling more than $30 billion into his Open Society Foundations to promote democracy, human rights, and education. Soros remains an influential—often controversial—figure at the intersection of finance, politics, and global affairs.

George Bishop, founder of GeoSouthern Energy, built his fortune in oil and gas by focusing on shale plays and unconventional drilling. Starting his career in the energy sector in the 1980s, he grew GeoSouthern into a major player in the Eagle Ford Shale of Texas before selling a large stake to Devon Energy for $6 billion in 2013. Known for his low profile and disciplined approach, Bishop has since diversified into other energy ventures and real estate, establishing himself as one of America’s quietest self-made billionaires.

Forrest Lee Preston, a self-made billionaire, founded Life Care Centers of America in 1970 and built it from a single facility in Cleveland, Tennessee, into one of the nation’s largest privately held networks of nursing homes, assisted-living, and retirement communities. As sole owner and CEO, he has overseen more than 200 locations across 27 states, employing over 30,000 people and serving tens of thousands of residents. Known for his hands-on control and aggressive expansion, Preston has navigated regulatory challenges and industry upheavals, cementing his reputation as a dominant force in the senior-care sector.

Edward P. “Ed” Roski Jr. is the billionaire president and chairman of Majestic Realty Co., one of the largest privately held real estate developers in the U.S., with over 80–90 million square feet of industrial and commercial properties. A decorated Vietnam veteran who earned two Purple Hearts and a Bronze Star, he is also a part-owner of the Los Angeles Lakers and Kings, co-founded the Land of the Free Foundation supporting veterans, and serves on USC’s board and numerous museum and civic boards. 

Drayton McLane Jr. is a self-made billionaire business magnate and philanthropist best known for building the McLane Company into a nationwide grocery and logistics powerhouse—growing revenue from $3 million to $19 billion—and later selling it to Walmart in 1990. He served as vice-chairman of Walmart while expanding The McLane Group, a family-owned holding company investing globally. He also owned and led the Houston Astros from 1993 to 2011 as chairman and CEO, becoming the first Texas team to reach the World Series under his tenure.

Dennis R. Washington is a self‑made billionaire industrialist who founded The Washington Companies, a diversified conglomerate spanning heavy construction, mining, railroads, marine shipping, aviation, equipment, and environmental cleanup. From starting with a single bulldozer in Montana, he built a business empire that now includes Seaspan Marine and Montana Rail Link—and is rated one of Montana’s wealthiest residents. 

David Walentas is the self-made real estate developer behind Two Trees Management, the Brooklyn firm that transformed Dumbo and Williamsburg from industrial decline into high-end residential and creative districts. A University of Virginia alumnus, Walentas began with a small Manhattan partnership in 1968 and leveraged $12 million to acquire nearly 2 million sq ft in Dumbo, reshaping it through bold vision and rezoning advocacy.

Charles R. Schwab is the pioneering founder, longtime CEO, and current Co‑Chairman of The Charles Schwab Corporation, which he started in 1971. Renowned for revolutionizing the discount brokerage industry—offering low-cost, tech-driven trading and eliminating commissions—he built one of the largest global investment firms managing over $10 trillion in client assets and serving more than 32 million accounts. Semi-retiring in 2008, he remains the largest individual shareholder and leads the Schwab Foundation’s education and dyslexia initiatives. 

Charles Butt is the chairman and CEO of H‑E‑B, the San Antonio‑based supermarket chain founded by his grandmother in 1905. Taking over leadership in 1971, he transformed H‑E‑B into a $39–42 billion private company with over 400 stores across Texas and Mexico. A Wharton and Harvard MBA alum, Butt is also a generous philanthropist—pledging more than $150 million to education initiatives and public school teachers, and earning Mexico’s Aztec Eagle Medal for cross-border giving.

Carl Icahn is the legendary activist investor and founder of Icahn Enterprises, the diversified conglomerate he controls with an 86% stake. Born in Brooklyn in 1936, he helped pioneer shareholder activism as a high-stakes corporate raider—targeting companies like Trans World Airlines and Time Warner—then transitioned into long-term value investing. His bet on CVR Energy has since become the financial backbone of Icahn Enterprises amid broader portfolio volatility.

Bill Marriott is the hospitality titan who transformed a root-beer stand into a global lodging empire as the long-time CEO and executive chairman of Marriott International. A University of Utah alumnus and former naval officer, he introduced innovations like revenue management, spearheaded the company’s 1993 split, and expanded the brand into luxury, mid-market, and vacation segments—setting industry standards through his hands-on leadership.

Bernard Saul, II is an American billionaire and real estate entrepreneur, serving as Chairman & CEO of Saul Centers since 1993. An heir to the historic B.F. Saul Company—a mortgage and property firm founded in 1892—he transformed the legacy business into a publicly traded REIT managing 9 million sq ft across Washington DC–area office and retail properties, and sold Chevy Chase Bank to Capital One in 2009.