Bernard Arnault vs. Michael Bloomberg

Arnault apparently wooed his wife, Helene Mercier, a concert pianist, by playing Chopin and other classical composers on the piano. Arnault and LVMH own a 40% stake in private equity firm L Catterton, which has $30 billion in assets, including investments in Birkenstock and Equinox.

In 2018, Bloomberg pledged $1.8 billion to Johns Hopkins University, his undergraduate alma mater, adding $1.5 billion he had already given the school. As a teenager, Bloomberg worked at an electronics company in Cambridge, Massachusetts.