America's 10 Largest Business Dynasties: Filthy Rich but Mysterious
Forbes has released a list of American family-owned companies that are private or not publicly traded with the highest valuations in 2026. Previously, the ranking was based solely on total annual revenue.
Measuring business scale through estimated valuations provides a new perspective, with the top three companies recording valuations above US$100 billion. The figure has succeeded in eclipsing the value of several leading technology start-ups such as SpaceX and OpenAI.
These family companies operate in fundamental sectors, ranging from supermarket chains to consumer products, with operations spread across 16 states.
Most entities tend not to seek the public spotlight. All firms on the list are controlled by founding families through the second generation or beyond, excluding entities still exclusively owned by first-generation founders.
Dominance of Industrial Conglomerates and Consumer Goods
Topping the list is Koch, with an estimated valuation of US$185 billion. The Wichita, Kansas-based conglomerate was pioneered by Fred Koch in 1940 after discovering a new method of refining oil. Today, 84% of the company’s shares are held by the Charles and Julia Koch family. The revenue-generating entity of US$125 billion has expanded into chemicals, software, and commercial paper products.
The second place is held by Mars, valued at US$121 billion. Founded by Frank Mars in 1911, the chocolate maker of M&M’s remains 100% controlled by the founding family. Mars has aggressively diversified into the pet-care sector and successfully acquired Kellanova for US$36 billion to augment its portfolio of well-known brands.
Finance, Retail, and Agriculture Giants
Fidelity Investments takes third place with a valuation of US$107 billion. Established in 1946, the company manages assets of about US$17.9 trillion. Led by the third generation, Fidelity is known as a pioneer of telephone-based mutual fund purchases and the launch of a cryptocurrency platform in 2018. The Johnson family holds 49% of the shares, with the remaining 51% owned by company employees.
Publix ranks fourth with US$63.1 billion. Founded in Florida in 1940, the chain now operates more than 1,400 supermarkets across eight states, with 20% of its shares still owned by the Jenkins family.
Cargill takes fifth place with US$58.7 billion. As the oldest entity on the list, dating back to 1865, Cargill recorded revenues of US$154 billion. Its business spans agriculture and commodity risk management, with 88% of shares held collectively by more than 100 family members.
Expansion of Fast-Food and Media
Chick-fil-A sits sixth with a valuation of US$46.1 billion. The restaurant chain, with revenues of US$10.3 billion, has been wholly owned by the Cathy family since 1967. While maintaining the policy of closing on Sundays, the company continues to aggressively expand internationally into markets such as the United Kingdom and Singapore.
Cox Enterprises ranks seventh with a valuation of US$35.8 billion. Originating from a newspaper business in 1898, the company with revenues of US$23.1 billion expanded into cable and radio broadcasting. It currently processes the sale of a cable unit valued at US$21.9 billion that is awaiting regulator approval in California.
Home Goods and Distribution Network
In eighth place is SC Johnson, valued at US$29.8 billion. Founded in 1886, the company with revenues of US$13 billion produces well-known household brands such as Windex and Ziploc, with 100% ownership held by the Johnson family.
Ninth is H-E-B, the Texas-based supermarket chain valued at US$27.4 billion. Established in 1905 with only US$60, this company, with revenues of US$49.6 billion, has 87% of the shares operationally controlled by the Butt family.
Reyes Holding completes the top ten with a valuation of US$24.5 billion. Originating as a beer distributor in 1976, the company with revenues of US$45 billion has developed into a global food distributor fully owned by the Reyes family.
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