I don't know about the USA, but in Europe "ordinary" people don't do investment portfolios. You can safely assume that if they don't have any savings, they most certainly won't have investment portfolios.
There are even laws mandating the pension funds to invest in local Treasury bonds (which are fortunately reasonably safe and high-yield, Uruguay is among the most stable in the continent)
In Latin America in general pension funds are mismanaged and periodically raided by populist governments.