The top 1% of U.S. households took a $2.3 trillion hit from the plunge in corporate equities and mutual fund shares in the fourth quarter of 2018, according to the Fed.
While the top 1% experienced a drop in wealth from the decline of equity holdings, some of the drop was counterbalanced by gains in municipal securities and other debt instruments, increased deposits in checking accounts, real estate gains and other holdings. The overall drop in wealth for the top 1% was $1.9 trillion — roughly equivalent to the gross domestic product of Italy.

Since the last quarter of 2013, the top 1% of households have held greater than a 30% share of U.S. household wealth.
The database will be updated quarterly, according to the Fed.