There are compelling reasons to invest now in developing women leaders. Globally, the number of women in senior management has been stalled at 24% for nearly a decade. When Harvard Business School surveyed 25,000 graduates, they found that although men and women had similar ambitions, the men were far more likely to have direct reports, profit-and-loss responsibility, and senior-level jobs. And most importantly, when women are represented at senior levels, companies profit. On average, a company with just 30% female executives can expect a 15% boost in profitability.