In 2018 the net wealth of the top 0.1% of the population equals that of the bottom 90% combined.

Test: the share of US household net wealth held by the top 0.1% compared with the share held by the bottom 90%, using estimates available around 2018 (for example Saez & Zucman or the Federal Reserve's Distributional Financial Accounts). True: leading estimates show the two shares within about 2 percentage points of each other. Mostly true: a prominent academic estimate (such as Saez-Zucman) shows them roughly equal, while another major source shows a moderate gap. Mostly false: the top 0.1% share is substantially smaller than the bottom 90% share in all major estimates, though it is large and rising. False: the shares are far apart in every major estimate (for example the top 0.1% holding under half of the bottom 90% share).

Set before the research began.

1. E1 Board of Governors of the Federal Reserve System

   “the top 0.1 percent, the remaining 0.9 percent of the top 1, the next 9 percent (i.e., 90th to 99th percentile), the next 40 percent (50th to 90th percentile), and the bottom half (below the 50th percentile).”

2. E2 The Distributional Financial Accounts Accessible Data Board of Governors of the Federal Reserve System · 30 August 2019

   “Figure 2: Household wealth shares by wealth percentile groups, 1989:Q3 to 2019:Q1 Percent of aggregate wealth | Quarter | Top 1% | Next 9% | Next 40% | Bottom 50% |”

E1 only defines the wealth groups in the Federal Reserve's Distributional Financial Accounts and gives no share values. E2 shows the headers of a wealth-share table but no figures, and it does not list the top 0.1% as its own group. Neither item shows what share of wealth the top 0.1% or the bottom 90% held around 2018, so the comparison the criteria call for cannot be made.