Mark Penn’s career spans 40 years in market-research, advertising, public relations, polling, and consulting, and he has advised top world leaders, led companies, and written best-selling books. Currently, Penn is the president and managing partner of The Stagwell Group, a private equity fund that invests in marketing services companies and reinvents the traditional holding company model. Before founding The Stagwell Group, he served in senior executive positions at Microsoft, where as executive vice president and chief strategy officer, he was responsible for working on core strategic issues across the company, blending data-analytics with creativity to help set the company on a new course.