"The old boy network is still very strong and very true. Just look at the stock exchange and how many men and women are there. It is still very much run by men"

This quote refers to the occurrence of gender bias and sexism in markets and workplaces, where males often hold positions of power and make decisions that affect both males and females. The "old young boy network" refers to the informal connections and relationships in between men in power, frequently formed through social clubs, fraternities, and other unique groups. These networks can produce barriers for females and other underrepresented groups to advance and prosper in their careers. In the context of the stock exchange, Billie Jean King is drawing attention to the fact that regardless of progress towards gender equality in some locations, men still dominate in management roles and decision-making positions.