Net worth, measured as assets less liabilities—is skewed heavily, not only to the rich, but to the richest of the rich.
Plu-TON-o-my. n. An economy where economic growth is powered by and largely consumed by the wealthy few
The U.S. Economic Policy Institute reports: Starting with the bottom fifth of the wealth distribution is a group that has negative wealth (in other words, on average, the least wealthy 20% of people in this country owe more than the value of their assets). From there, wealth increases dramatically by wealth class.