Condé Nast Shuts Down ‘Portfolio’ Magazine, Lays Off 80 April 28, 2009 No Comments on Condé Nast Shuts Down ‘Portfolio’ Magazine, Lays Off 80 Post View 0 New York City-based Condé Nast Publications has shut down Portfolio Magazine, laying off approximately 80 staffers. Some staffers may be offered other posts within the…