Only 21% of American families own shares directly, according to the SCF. Even fewer own “pooled investment funds” – such as mutual funds and exchange-traded funds (ETFs) – or other investment vehicles that typically include stocks among their holdings.
You linked me to a site that I have to have a subscription to see the data - so I can’t verify your claim.
https://www.pewresearch.org/short-reads/2024/03/06/a-booming-us-stock-market-doesnt-benefit-all-racial-and-ethnic-groups-equally/
This statement by pew research says:
“my” numbers include 401k, pension funds, etc. Pew is looking at people owning things more directly.