Net Worth: $2.0 B

LAST YEAR: 2.2

CHANGE: -9%

AGE: 68

RESIDENCE: Malibu

SOURCE OF WEALTH: Inheritance, food manufacturing/distribution, agriculture



THE MONEY: MacMillan and her three sisters – Lucy, Katherine and Alexandra – are among 14 billionaire descendants of Cargill Inc.’s founder William Wallace Cargill. Along with other relatives, they control roughly 90% of the business. MacMillan has no known involvement with the business’ operations. MacMillan holds an estimated 3% ownership in Cargill, which she inherited from her father, William Duncan, in 2006. Cargill is the largest private company in the United States and the biggest food company on the planet.



THE BUZZ: Cargill maintains 160,000 employees in 70 countries and last year saw $177 billion in revenue, up 7% from $134 billion a year earlier. The company, which did not report profits in its annual report, likely saw increased costs in goods and labor. Competitor Conagra Brands Inc. saw a 9.8% decline in stock prices over the past year, which may mean a similar drop in the value of Cargill. In other troubles for the company, the UN’s Food and Agriculture Food Price Index hit a two-year low in May.