The staggering amount of wealth held by the Forbes 400 more than doubled over the last decade. But their tax rates actually dropped.

The share of wealth held by the Forbes 400 more than doubled from $1.27 trillion in 2009 to nearly $3 trillion this year. That marks a significant increase encouraged by a combination of sliding tax rates, stock market growth, and the economic recovery, according to Gabriel Zucman, an economist at the University of California, Berkeley.
Read more: https://www.businessinsider.com/forbes-400-wealth-doubled-last-decade-as-tax-rate-fell-2019-11?source=Snapzu