Wealth inequality in the United States is obvious to everyone. The Federal Reserve’s triennial Survey of Consumer Finance (SCF) documents the glaring and persistent divide between rich and poor, confirming that ownership of financial and real assets in the United States has been highly concentrated for decades (see our earlier post). The most recent 2016 estimates suggest that the top 10% of the wealth distribution own nearly three-quarters of all marketable assets, with the top 1% owning more than half of that. And, Saez and Zucman (SZ) estimate that the U.S. distribution has been getting worse, with the top 1% share of marketable wealth rising by more than 10 full percentage points since 1989.

But, as Catherine, Miller and Sarin (CMS) recently highlight, adding in the present discounted value of Social Security benefits (net of taxes) to construct a more comprehensive measure of wealth alters these patterns. First, according to CMS’s estimates, the share of marketable wealth in total wealth has plunged by more than 18 percentage points since 1989. Second, over the past three decades, the top 1% share of total wealth has risen only modestly, while the share owned by the top 10% has declined somewhat.

In this post, we highlight the CMS results, and decompose their changes in total wealth shares into two parts: the changes in marketable and Social Security wealth shares accruing to each group, and the aggregate decline over time of marketable wealth as a share of total wealth. We show that the latter dominates the overall trend in this more comprehensive measure of inequality….