⬅ # 847 Anna Katharina Viessmann|# 849 Shigenobu Nagamori

# 848 Katharine Rayner 


Real Time Net Worth
as of 5/27/2024

# 848 Katharine Rayner 


Real Time Net Worth
as of 5/27/2024
OccupationPartial Owner, Cox Enterprises
Source of WealthMedia, Automotive
ResidenceEast Hampton, New York
Marital StatusWidowed
EducationBS, Sarah Lawrence college
Age-Adjusted Net Worth$1.06B
Katharine Rayner
Katharine Rayner
United States
Net worth: $3.83B

Self-Made Score 

Wealth History

Hover or tap to reveal net worth by year
Loading Chart



Katharine Ann Johnson Rayner, born around 1944-1945, is an American billionaire heiress.
She is the daughter of Anne Cox Chambers and Louis G. Johnson.
Her maternal grandfather is James M. Cox, founder of Cox Enterprises.
Rayner has a sister, Margaretta Taylor, and a half-brother, James Cox Chambers, from her mother's second marriage.
She inherited an estimated 17% stake in Cox Enterprises from her mother.
Rayner has never had an active role in the company.

Wealth and Philanthropy

In 2015, she received a 49% share in Cox Enterprises from her mother.
In 2019, Rayner donated over $5 million to the Animal Medical Center in New York City.

Personal Life

Rayner has been married twice. Her first marriage was to Jesse Kornbluth, a magazine writer, in 1984, ending in divorce.
Her second husband was William P. "Billy" Rayner, a painter and travel writer, who passed away on January 22, 2018, at 88.
She resides in East Hampton, New York.

Family and Cox Enterprises

Rayner inherited her stake in Cox Enterprises from her mother, Anne Cox Chambers, who held a 17% stake.
Her siblings, James Cox Chambers and Margaretta Taylor, also inherited 17% stakes each.
Rayner's cousin, Jim Kennedy, serves as chairman emeritus of Cox Enterprises.
Her nephew, Alex Taylor, holds the positions of CEO and chairman within the company.
Neither Rayner nor her siblings or mother have ever held active roles within Cox Enterprises.

Cox Enterprises Overview

Cox Enterprises is a private conglomerate headquartered in Atlanta, Georgia, with $22 billion in revenues.
It operates in communications, media, and automotive sectors, with major subsidiaries like Cox Media Group, Cox Communications, and Cox Automotive.
The company was founded by James M. Cox, who purchased the Dayton Daily News in 1898.
Cox expanded into radio and television broadcasting, later entering the cable and automotive industries.
Cox Enterprises became privately-owned in 1968, with Cox Communications emerging as a separate entity in 1982.
The automotive division, including Manheim and Autotrader, has expanded globally, with Cox Automotive established in 2014.

How long would it take you to become as rich as Katharine Rayner?

If you started with $10,000 and invested an additional $500 each month at a 44.02% CAGR, it would take you 5 years to reach Katharine Rayner's net worth of $3.83B.

Is this realistic? It depends how closely the VIX-TA-Macro Advanced model performs to its history in the future. Since Grizzly Bulls launched on January 1, 2022, it's returned 42.57% compared to 11.75% for the S&P 500 benchmark.

Enter data in all but one field below, then calculate the missing value

Katharine Rayner is very wealthy, but what's stopping you from reaching that same level of success? As summarized in our five fundamental rules to wealth building, becoming wealthy in a modern capitalist economy is not complicated. There's actually only three variables:

  1. Your starting capital
  2. Your earnings after expenses
  3. The compound annual growth rate (CAGR) of your savings

Most people start with zero or very little, so if you weren't born into wealth, don't fret! The majority of the fortunate folks listed in our Grizzly Bulls’ Billionaires Index came from middle class or lower backgrounds. The most distinguishing characteristic of the group is their ability to consistently earn a high CAGR on their savings.

Every billionaire has a unique strategy to achieve high CAGR. For Katharine Rayner, Media and Automotive are the primary sources. Whether you choose to invest your savings in your own businesses or the businesses of others is not as important. The salient piece of the puzzle is ensuring that your hard-earned savings are generating sufficient CAGR to reach your long term goals.

Most people simply invest their money in index funds and call it a day. There's nothing wrong with this approach, but it guarantees relative mediocrity. To achieve greatness, you need to invest your money to earn higher than average returns. In the long run, better investors will always finish ahead of better earners.

Source: Grizzly Bulls reporting

Methodology: Grizzly Bulls' Billionaires Index is a daily ranking of the world's billionaires and richest people. Grizzly Bulls strives to provide the most accurate net worth calculations available. We pull data from public equity markets, SEC filings, public real estate records, and other reputable sources.

The index is dynamic and updates daily at the close of U.S. stock market trading based on changes in the markets, economy, and updates to Grizzly Bulls' proprietary algorithm of personal wealth calculation. Stakes in public companies are tracked daily based on the relevant closing prices of the underlying securities. Additionally, stakes in private companies, cash, real estate, and other less easily valued assets are updated periodically through careful analysis of insider transactions, comparable public company sales / EBITDA multiples, etc.

Edited by: Lee Bailey