This is at least true for Sweden. Take a look on the OMX Stockholm 30 index, consists of the 30 most-traded stock on the Stockholm stock exchange.
https://en.wikipedia.org/wiki/OMX_Stockholm_30
If you trace the origins of these companies the youngest was created in the 80-thies for Comviq that later became Tele2 (created in 1997)
Basically all of the others are from the 50-ies or before, many founded in 19th century.