The top 10% of Americans hold 80% of US equity, the top 1% about 50%, and the bottom 80% hold almost none.

Judge as of Nov 2022 against Federal Reserve Distributional Financial Accounts data (corporate equities and mutual fund shares) or comparable studies (Wolff, SCF). True: top 10% share about 80% (75–92%), top 1% about 50% (45–55%) and bottom 80% about 10% or less. Mostly true: one figure is modestly off (for example top 1% at about 40–45% or about 55–58%) while the others hold. Mixed: one figure is substantially wrong (for example top 1% at about 35%) while the others hold. Mostly false: two or more figures are substantially off, though concentration is high. False: the figures are badly wrong (for example top 10% under 65%, or bottom 80% holding more than 20%).

Set before the research began.

1. E1 You Don’t Need To Care About The Stock Market Current Affairs · 21 June 2023

   “which recently brought the richest 10 percent to owning a new high of 88.8 percent of outstanding stock, according to the Fed's most recent Distributional Financial Accounts data.”

2. E2 You Don’t Need To Care About The Stock Market Current Affairs · 21 June 2023

   “The top one percent of households classified by wealth owned 40 percent of all stocks in 2016, the top 10 percent 84 percent, and the top quintile [20 percent] 93 percent.”

E2 quotes 2016 figures: the top 10% of households owned 84% of stocks, the top 1% owned 40%, and the top 20% owned 93%. That leaves the bottom 80% with about 7%. E1 cites Fed Distributional Financial Accounts data, reported in mid-2023, putting the top 10% at a new high of 88.8% of outstanding stock. The top-10% and bottom-80% figures therefore fall within the claim's ranges. The only top-1% figure in the evidence is 40%, which is modestly below the claimed 'about 50%' and fits the criteria's 'mostly true' case.