The working class is not defined in terms of historical dates.

The working class is everyone who lacks sufficient income to survive solely from owned assets such as businesses or rented properties.

Obviously, ability to purchase stocks is limited by wealth and income remaining after meeting other expenses.

Sorry, but the working class exists, and cannot own as much stock as it pleases.

A constructive response to the question would be of providing an actual percentage, as was asked, rather than returning an absurd deflection.