As of September 18, 2023, Rafaela Aponte- Diamant  was the wealthiest person in Switzerland, with an estimated net worth of 29.4 billion U.S. dollars, followed by Gianluigi Aponte (No. 2, $29.4 billion), Ernesto Bertarelli (No. 3, $9.5 billion); and Ivan Glasenberg (No. 4, $8.9 billion). Guillaume Pousaz is the fifth-richest person in Switzerland,...