4) Gianluigi & Rafaela Aponte – Net worth: $6.2 Billion
Gianluigi Aponte met his wife Rafaela when he was a captain of a ferry ship. In 1970 they launched their own cargo shipping venture, Mediterranean Shipping, now known as MSC. Today it is second largest container shipping in the world.
3) Margarita Louis-Dreyfus – Net worth: $9.6 Billion
Margarita Louis-Dreyfus is the richest woman in Switzerland. She is the chairperson of Louis Dreyfus, the French commodities behemoth. She took over the company when her husband Robert died in 2009.