Is it really true that most americans do not invest in stock market?

I read a number of articles including la times and such as this

http://ift.tt/2vx0upu

it states most americans do not benefit from the rise of the stock market. So more than 50% own no stocks? I am not sure I believe that what do you guys think

Submitted December 20, 2017 at 04:24AM by caseyrobinson2 http://ift.tt/2B70lbB