Bloomberg Billionaires Index

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# 364 Simon Reuben $6.58B

Random fact: Acquired loans held against London's Grosvenor House hotel.


Reuben is a Monaco-based investor who shares interests in technology and real estate with his billionaire brother, David. The siblings previously owned Global Switch, operator of data centers in Asia and Europe. They have prime real estate across Europe including a London mansion that they bought for more than $200 million.

As of :
Last change No change
YTD change +$150M ( +2.3%)
Biggest asset Cash
Country / Region United Kingdom
Age 81
Industry Diversified
View net worth over:   Max 1 year 1 quarter 1 month 1 week

Relative Value

Simon Reuben's net worth of $6.58B 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:

The majority of Reuben's fortune is derived from the sale of investments including data center operator Global Switch. Proceeds are adjusted to reflect taxes, market performance and the cost of purchases. Spokesman Charles Stewart-Smith confirmed Simon and David share the businesses equally.

They also have a variety of real estate holdings, according to a Bloomberg analysis of property records. Their property holdings include the former In and Out Club in London's Mayfair neighborhood that they bought for more than $200 million in 2011. The value of their holdings is based on price data for the relevant London districts published by brokers Savills, Colliers International, real estate data provider IPD and property developer Grosvenor.

The brothers control a range of other closely held investments in transportation, leisure, mining, banking and technology, including airports, pubs, hotels and racetracks. These are valued using acquisition cost, valuations of comparable peers or book value and included in the cash balance.

The Reuben family also owns 10% of Newcastle United Football Club, based on an Oct. 8, 2021, Bloomberg News article. Their stake is valued based on the reported purchase price for the soccer club.


Family: Married, 1 child

Simon Reuben was born in Mumbai, then called Bombay, in 1941, three years after the birth of his brother David. The sons of Jewish parents from Iraq, the pair moved to London as teenagers. Simon bought the UK's oldest carpet maker in 1965, revitalized the company and used the proceeds to make his first real estate investments in London. He teamed up with elder brother David in 1977, and the siblings founded metal trader Trans-World.

They established a Russian office in 1991, and, with the help of partner Lev Chernoy, bought controlling stakes in Russian and Ukrainian aluminum plants. Five years later, they were the world's third-largest producer of the metal, with sales reaching $6 billion in 1997. The company was criticized by Russia's politicians and media, who attacked Trans-World's profit margins.

Faced with fines from Moscow and a coterie of disgruntled ex-managers who were maneuvering to take control of their smelters, the brothers sold their interest in the company in 2000 for $250 million to billionaire Oleg Deripaska, and invested the proceeds in real estate, leisure interests and technology companies.

Reuben lives in Monaco with his wife, Joyce. The couple have a daughter, Lisa.

  • 1941 Born in Bombay to Jewish parents who'd moved to India from Iran.
  • 1977 Starts metal trading company Trans-World with brother David.
  • 2000 Reuben brothers sell interest in Trans-World for $250 million.
  • 2003 Portfolio of shopping centers purchased worth more than $480 million.
  • 2006 Sells 50% stake in London's Olympic City site for $200 million.
  • 2007 Acquires data center operator Global Switch.
  • 2011 Buys London's In and Out Club to redevelop as a luxury residence.
  • 2016 Sells 49% stake in Global Switch for $3 billion.