Mars vs Yanai

Mars, Incorporated and Fast Retailing (Uniqlo).

The differences

Forbes puts Tadashi Yanai about $4.8B ahead of Jacqueline Mars.Forbes figures from 27 Mar 2026 and 11 Oct 2026.
Jacqueline Mars: inherited it. Tadashi Yanai: inherited and grew it.
Jacqueline Mars is from United States; Tadashi Yanai is from Japan.

Put someone else on either side

Mars

Yanai

Net worth, Forbes: $50.3BForbes, 11 Oct 2026; $55.1BForbes, 27 Mar 2026
Net worth, Bloomberg: $48.8BBloomberg, 14 Oct 2026; $69.5BBloomberg, 16 Oct 2026
Forbes rank: No. 37Real-Time list, 8 Sep 2026; No. 33Real-Time list, 27 Mar 2026
Billionaire since: Not stated; Not stated

How it started: Inherited itMars was founded by her grandfather Frank C. Mars in 1911; Forbes says she owns an estimated one-third of it; Inherited and grew itHis father Hitoshi Yanai founded the men's shop Ogori Shoji in 1949; Tadashi joined in 1972, became president in 1984, opened the first Uniqlo that year and built it into Fast Retailing. The company calls him its founder and Forbes lists him as self-made
Main source: Mars, Incorporated (confectionery, snacks, food and pet care); Fast Retailing shares (Uniqlo)Bloomberg: 'The majority of Tadashi Yanai's fortune is derived from his stake in Fast Retailing'
Companies: Mars, IncorporatedMars, Incorporated: None; retired; Fast Retailing (Uniqlo)Fast Retailing (Uniqlo): Chairman, president and CEO
Biggest stake: Mars, Incorporated33% owned; Fast Retailing (Uniqlo)18.96% owned

Born: Not stated; 7 Feb 1949Yamaguchi Prefecture, Japan
Country: United StatesLives in Virginia, United States; JapanLives in Tokyo, Japan
Education: Bachelor's degreeBryn Mawr College, class of 1961; Bachelor's degreeBachelor's degree in political science and economics, Waseda University (1971)
Parents: Granddaughter of Mars founder Frank C. Mars; her father Forrest E. Mars Sr. joined and later led the family business; His father founded and ran a men's clothing shop in Ube, Yamaguchi PrefectureMother's occupation not stated

Giving Pledge: Not a signer; Not a signer
Foundation: Mars HQ Regional FoundationIts Form 990-PF lists her as president; the Mars Impact Fund is a company initiative; Yanai Tadashi FoundationFounded 2015 (scholarships); he also chairs the Fast Retailing Foundation
Lifetime giving: Not stated; Not stated

Role now: RetiredNo role at Mars; formerly president of the Food Product Group and a board member; Runs the companyChairman, president and CEO of Fast Retailing; chairman of UNIQLO
Successor: Mars has been run by non-family management since 2001 (CEO Poul Weihrauch); her son Stephen Badger sits on the board; None namedHe is expected to be reappointed chairman, president and CEO after the 26 November 2026 shareholder meeting. Kazumi Yanai and Koji Yanai are group senior executive officers and directors; Bloomberg says shares held by his two sons are credited to him
Public office: None found; None found
Legal record: 2013: Loudoun County General District Court, VirginiaPleaded guilty to misdemeanor reckless driving over a fatal crash in October 2013; the judge fined her $2,500 and suspended her licence for six months.; None found