;#Faculty News;# | Crain's New York | 10
Re: John Davis
Many family businesses (they make up two-thirds of all companies in the United States) end up with siblings in executive roles in the second or third generation. Few of them work even marginally well, and very few last, said John Davis, faculty chair of the Families in Business program at the Harvard Business School. "I've seen fistfights in boardrooms, or close," said Mr. Davis, who knows the Denihans. "Functional co-leaders who are siblings are very rare."