After more than 20 years on Wall Street, most recently as former president of the global wealth and investment management division of Bank of America, Sallie Krawcheck was widely considered one of the most powerful women in banking. Recently, Krawcheck purchased the global women’s network 85 Broads and has taken her experience in a new direction. In an interview with Wharton management professor Adam M. Grant , Krawcheck speaks about the “subtle, well-meaning biases” against women, how they can be overcome and why diverse leadership at the top is critical for “higher returns, lower volatility, lower risk, more client-focus and more innovation.” An edited transcript of the conversation follows. Adam Grant : What are your views on leadership, and how have they evolved over the course of your career? Krawcheck : Leadership is a lot of hard work. I hoped when I was younger that I would just be a natural leader or that it was something that was innate, but it is really a learned skill.…