DENVER, CO - JUNE 13, 2015: The TIAA-CREF (Teachers Insurance and Annuity Association - College Retirement Equities Fund) building in downtown Denver, Colorado. (Photo by Robert Alexander/Getty Images)
DENVER, CO - JUNE 13, 2015: The TIAA-CREF (Teachers Insurance and Annuity Association - College Retirement Equities Fund) building in downtown Denver, Colorado. (Photo by Robert Alexander/Getty Images)