Nearly a quarter of world 's leaders are women , with combined wealth of $ 100 billion . Wealth - X has compiled a list of the wealthiest women in each region . Topping the list in North America -- and globally -- is Penny Marshall worth $ 37.9 billion .
Nearly a quarter of world 's billionaires are women , with combined wealth of $ 930 billion . Wealth-X has compiled a list of the wealthiest women in each region . Topping the list in North America -- and globally -- is Christy Walton worth $ 37.9 billion .