children networth nationality parents birth_date spouse residence article_title name occupation
1 us german herbert quandt and johanna quandt 9 may 1966 katharina quandt frankfurt , germany stefan quandt
 stefan quandt businesssman
stefan quandt

stefan quandt -lrb- born 9 may 1966 -rrb- is a german engineer and industrialist .
he is ranked as the 59th richest person in the world in the forbes list of billionaires , who put his personal wealth at $ 15.6 billion .
he was born in bad homburg to herbert quandt and johanna quandt .
he attended the university of karlsruhe where he studied engineering from 1987 to 1993 .
from 1993-1994 , he worked for the boston consulting group in munich .
from 1994 to 1996 he worked for datacard group of minneapolis as a marketing manager in hong kong .
on his father 's death in 1982 he inherited 17.4 % of bmw , the company his father had saved from bankruptcy in 1959 .
quandt also inherited from his father substantial holdings in other companies , many of which he runs through his holding company , delton ag .
these include : 76.8 % of ceag , -lrb- small power supplies and recharging devices for mobile phones -rrb- 50.3 % of logwin ag -lrb- formerly thiel logistik , a logistics and freight forwarding company -rrb- 100 % of heel gmbh , which makes homeopathic medicines 100 % of cedo household products , which makes freezer bags , plastic and aluminium wraps and foils , bin liners , and coffee filters .
with his mother , he owned 18.3 % of gemplus international , a large digital security company , before its merger to form gemalto in 2006 .
currently he serves bmw as a deputy chairman of the supervisory board .
he also has held seats on the supervisory boards of dresdner bank ag and of the gerling konzern allgemeine versicherungs ag .
rumours predict he will eventually become head of bmw 's supervisory board .
his mother johanna quandt and sister susanne klatten are also substantial shareholders in bmw and other large german companies making them one of the wealthiest families in the world .
in autumn 2005 , he married katharina , a software engineer .
they have a daughter , born on new year 's eve that same year .
he has been sighted watching football matches but otherwise keeps a low profile .
a programme by the german public broadcaster , ard , in october 2007 described in detail the role of the quandt family businesses during the second world war .
as a result , four family members announced , on behalf of the entire quandt family , their intention to fund a research project in which a historian will examine the family 's activities during hitler 's dictatorship .
