Bloomberg Billionaires Index

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# 317 Katharine Rayner $6.14B

Random fact: Mother was ambassador to Belgium under President Jimmy Carter.


Rayner owns about one-sixth of Cox Enterprises, a media and automotive services conglomerate. The Atlanta-based business is closely held and controls the third-biggest cable operator in the U.S., which serves about 6 million homes and businesses. The combined group reported revenue of $21 billion in 2018.

As of :
Last change +$379M ( +6.6%)
YTD change +$808M ( +15.1%)
Industry Media & Telecom
Biggest asset Cox Communications
Citizenship United States
Age 75
Wealth Inherited
View net worth over:   Max 1 year 1 quarter 1 month 1 week

Relative Value

Katharine Rayner's net worth of $6.14B can buy ...

troy ounces of gold
barrels of crude oil

... and is equivalent to ...

of the GDP of the United States
of the total wealth of the 500 richest people in the world
of the top 100 U.S. college endowments
of the top 200 U.S. executives’ total awarded compensation
of U.S. existing home sales
times the median U.S. household income

Latest News

Net Worth Summary

Private asset
Public asset
Misc. liabilities
Confidence rating:

Rayner owns 16% of Cox Enterprises, a closely held conglomerate. She received the stake in December 2013 after her mother, Anne Cox Chambers, dissolved a trust that held 49.4% of Cox. Ownership is based on court documents and Cox's disclosure to Bloomberg that internal transactions resulted in equal stakes among the two owner families.

Cox Enterprises had revenue of $21 billion in 2018, according to the company. It has three units: Cox Communications, Cox Media Group and Cox Automotive. 

Cable company Cox Communications is the third-largest cable operator in the U.S., and had revenue of $11.9 billion in 2018 according to the company's website. It's valued using the average enterprise value-to-Ebitda multiple of three publicly traded peer companies: Comcast, Verizon, and Rogers Communications.

Cox Media Group operates six daily newspapers, 14 broadcast television stations and more than 60 radio stations, among other assets, and had revenue of $1.6 billion in 2018, according to its website and information provided by the company. Its valuation is based on the average enterprise value-to-Ebitda multiple of five publicly traded peers: EW Scripps, New York Times, Gannett, McClatchy and Sinclair Broadcast and is discounted by 15%.

Cox Automotive is a provider of car sales software technology. It had revenue of $7.5 billion in 2018 according to a spokesperson. Cox Automotive is valued on the average enterprise value-to-Ebitda multiples of KAR Auction Services, CarMax and Penske Automotive.

Rayner's share of corporate-level debt is included as a liability.

Joanna Coker, a Cox group spokesperson, provided revenue figures in April 2019 without providing further comment on the net worth calculation.


Birthdate: 1/12/1945
Family: Married, No children

Katharine Rayner is the granddaughter of James M. Cox, who built a U.S. newspaper chain after buying the Dayton Evening News in 1898. He became a politician, serving first as an Ohio state representative, then as governor. He ran for the U.S. presidency as a Democrat in 1920, losing to fellow newspaper publisher Warren G. Harding. He gave each of his daughters, Anne and Barbara, 49.4 percent of the company. Rayner, born in 1945, is one of Anne's three children and inherited her stake in 2013 when Anne distributed her Cox shares to her three heirs.

Today, Cox Enterprises is run by Rayner's cousin, James Kennedy. The company operates dozens of periodicals, TV stations and radio stations, as well as one of the largest cable systems in the U.S. and multiple auto sales online marketing ands software divisions.

Rayner is married to William Rayner, a retired Conde Nast executive and painter. The couple don't have any children, according to documents detailing the extended Cox family tree submitted to the court as part of her mother's petition to distribute her company shares.

  • 1898 James M. Cox buys a Dayton, Ohio, newspaper for $26,000.
  • 1919 Her mother Anne Beau Cox Chambers is born in Dayton, Ohio.
  • 1920 Grandfather James Cox runs as Democratic nominee for president.
  • 1945 Katharine Rayner is born.
  • 1995 Company spins off Cox Communications into a publicly traded subsidiary.
  • 2004 Family takes Cox Communications private.
  • 2013 Anne Chambers distributes stake in Cox Enterprises to Katharine and others.
  • 2014 Cox Enterprises revenue exceeds $17 billion.