Nicola Halsall Idehen is the former enterprise head of people at Citadel. She was previously the chief human resources officer at private equity firm Vistria, and the head of talent development at GCM Grosvenor. She began her career as a fixed income product specialist at JP Morgan Private Bank and a hedge fund product specialist at Lehman Brothers. She received a BA in economics from Yale University and an MBA from Harvard Business School. She is a trustee and former chair of the Presidential Search Committee of Adler University. She is also a member of the Leadership Advisory Committee at the Art Institute of Chicago and the University of Chicago Women’s Board.