Michael Bloomberg vs. Mark Zuckerberg

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.

Zuckerberg and his wife, Priscilla Chan, are spending $3 billion in an attempt to end, cure or manage all disease by the year 2100. In January 2019, Mark Zuckerberg purchased $59 million worth of waterfront property on Lake Tahoe in California.