18. Maria-Elisabeth Schaeffler
Net Worth: $6.7 billion
Industry: Ball Bearings
Maria Shaeffler is the widow of George Schaeffler, the founder of the Schaeffler Group. After her husband died in 1996, Maria and her only son assumed control of the company. Decades after her husband’s death and the company is still thriving. Today it is the largest producers of ball bearings in the world and have since began manufacturing other mechanical components. Under her reign, the company has acquired three other ball bearing producing company including INA, LUK and FAG. A privately owned company, Schaeffler Group employs over 70,000 people worldwide.
17. Margarita Louis-Dreyfus
Net Worth: $8.4 billion
Russian-born Swiss billionaire businesswoman inherited Louis Dreyfus Group, a French global conglomerate company from her husband Robert Louis Dreyfus after he died of leukemia in 2009. Since then, she has been acting as chairman of the company and her success in managing the business is visible in her wealth. One of the smart moves she made that has kept the company successful includes the sale of the energy business of the company back in 2012, management overhaul and even increasing her stakes in the company. Her company also owns French top tier team Olympique de Marseille.
See Also: 10 Richest People Of All Time