Miriam Adelson

Net worth over time

Forbes estimates of Miriam Adelson's net worth each year, next to the Forbes value of the Dallas Mavericks. From 2021 to now the net worth went from $38.2B to $30.3B. The figures are for the family, as Forbes lists them.

Yearly points are from the Forbes billionaires lists, mostly the spring World's Billionaires list; the last point is the latest Forbes real-time figure, which can differ a lot from the spring list. Years without a published figure are skipped.

The businesses in detail

How the main business makes money. Sands builds resorts that combine hotels, gambling floors, shopping malls and convention space. It earns money from gambling, hotel rooms, mall rents, food and events. It now operates only in Singapore and Macao. Resort profit before interest, tax and depreciation was $5.232B in 2025; Marina Bay Sands in Singapore produced about 56% of it. Shareholders received $2.25B of share buybacks and $694M of dividends in 2025.

Biggest deals.

• 1995: Sheldon Adelson's trade-show business, including COMDEX, was sold to SoftBank for $862M. His share, over $500M, funded The Venetian.
• December 2004: Sands listed on the New York Stock Exchange at $29 a share.
• 2007 and 2010: The Venetian Macao ($2.4B) and Marina Bay Sands (S$8B including land) opened.
• February 2022: Sands sold its Las Vegas resort and expo center for $6.25B, per Forbes.
• November 2023: she sold about $2B of Sands stock, about 10% of her holding, to fund the Mavericks purchase.

Career path

1. 1986

   Begins addiction research at Rockefeller University as a physician

2. 1988

   Sheldon Adelson and four partners found Las Vegas Sands

3. 1993

   Co-founds an Adelson Clinic for drug-abuse treatment in Israel; a Las Vegas clinic follows in 2000

4. 2007

   Adelson Family Foundation set up; Israel Hayom first published

5. 2018

   Becomes publisher of Israel Hayom; receives the Presidential Medal of Freedom

6. 2021

   Sheldon Adelson dies on 11 January; the family keeps its controlling block of Sands

7. 2023

   Family buys control of the Mavericks on 27 December

8. 2026

   Her son-in-law becomes Sands chairman and chief executive on 1 March

Teams and sports assets

Owns now 2

• teamDallas MavericksNBA · Basketball · USSince 2023 · 69% (with Sivan and Patrick Dumont) · Valuation about $3.5B (Forbes lists $3.55B)
• arenaVenetian Arena, MacaoMulti-use · Macao (China)Through Las Vegas Sands

Agreed, not yet closed 1

• arenaValley View arena site, North Dallas (option on about 104 acres)NBA · Basketball · USSince 2026 · Option held by a Mavericks company; rezoning filed September 2026; purchase can close by January 2028 · Total not disclosed; one seller agreed nearly $51M for 20 acres

Other investments and assets

• Companies and funds: Las Vegas Sands is the only public shareholding found.
• Property: None found beyond the Valley View option.
• Family in the business:Patrick Dumont, her son-in-law, runs Sands. Her daughter Sivan Dumont is a co-owner of record of the team. Irwin Chafetz, a Sands co-founder and director, is a trustee of several family trusts.

Giving and politics

• She gave $106M to Donald Trump's 2024 re-election effort.
• She gave $67.6M to Republican groups in the 2026 election cycle by August 2026, including $30M to the Senate Leadership Fund.
• The Adelson Family Foundation gives about $200M a year to Israel and Jewish causes. Birthright Israel had received more than $250M by 2015.

How they run their teams

• She holds no stated post at the team. Patrick Dumont is governor and casts the club's NBA vote.
• Masai Ujiri has run all basketball operations as president and alternate governor since 4 May 2026.
• Mark Cuban's July 2026 court petition for arena records, reported by the AP, was withdrawn in August and dismissed.
• In October 2026 Dumont said the arena will be built apart from any casino resort, as the site cannot fit both.

What they have said

• In the SEC filing on her 2023 share sale, she said the proceeds and cash on hand would buy a professional sports franchise.
• Through a family spokesperson, she and the Dumonts said the Mavericks are not for sale.
• The same statement said the families hope to enlarge their stake over time.
• Through the club, the family confirmed interest in the Dallas City Hall site before choosing Valley View.
• She gives few interviews. The Sands announcement naming her son-in-law chief executive carried no statement from her.

Little-known facts

• She is a medical doctor who built a career in addiction treatment before the casino fortune.
• Sands has no casino in the United States; it sold its Las Vegas properties in 2022.
• She was Nevada's wealthiest resident on the September 2025 Forbes 400.