Pros
It is a good idea, looks good on paper, and they are making big waves by spending tens of millions of dollars taking broker teams from Cushman and CBRE. If you are a stockholder when they sell the company you might make a few dollars per share.
Cons
I was hired under a detailed business plan, cost/revenue projection, and three year contract to lead a new service line at Newmark. It was all properly vetted and fully approved by the COO but after more than 9 months into the 2016 fiscal year I still had not been allowed to hire any of the people I needed and was promised. In the meantime my boss was submitting false and misleading revenue numbers to enhance quarterly earnings reports to Wall Street. Newmark (GGC Partners is a publicly traded company). The COO did not return a single telephone call or email message (ever). I went to HR then the CEO and was fired less than two weeks later. No investigation was ever conducted. CONS - Training, internal lines of communication (to management), internal controls, outdated and inconsistent IT systems, no upward feedback on superiors, human resources, internal reporting mechanisms, anti-retaliation policies, adherence to internal polices/codes, Cantor Fitzgerald HR and Legal departments serving Newmark business units, integrity, double standards, poor leadership, and just bad management. No wonder they can't get their stock to go above $9 per share.