But even that 46 percent ownership rate gets misunderstood, because it doesn’t differentiate how much stock is owned by different income classes. Less than a third of all households hold at least $10,000 in stocks, compared to 93 percent of those households in the top 1 percent.
The figures below show that, since the late 1980s, about 80 percent of the value of the market has been held by the top 10 percent. Within that top 10 percent, the share of stock wealth held by the top 1 percent is about equal to the share held by the 90-99th percentiles; both groups’ shares are twice as large as the share that the entire bottom 90 percent holds.
https://www.washingtonpost.com/posteverything/wp/2017/03/02/...
Most of the stock market is owned by institutional funds and people who are already quite wealthy.