Quinn Cotter, Esq.

Portfolio Manager

qcotter@gmadvisorygroup.com | 631.227.3900


Quinn joined GM Advisory Group in 2018.


As a Portfolio Manager, Quinn is responsible for implementing investment strategies into client portfolios, execution, and continued monitoring of client portfolios.  He is responsible to ensure that each client portfolio is invested consistently with the Firm’s outlook and in accordance with each client’s stated goals.  Quinn offers effective and timely communication to clients on such issues as portfolio holdings, allocations, and investment changes.


Prior to joining GMAG, Quinn worked as the Assistant Director of Corporate Development at Mercury Radio Arts and Mercury One, Inc. Quinn assisted the Chief of Staff in executing capital raises and managing investor relations. In this role, he also served as an advisor to the President, managed business development and client relationships, and was effective at advancing the charitable giving campaign of the company.


During law school, Quinn interned in Morgan Stanley’s Private Wealth Management Division and was a Judicial Intern for the Hon. Edward E. Guido.


Quinn holds an undergraduate degree from Dickinson College and a J.D. from Elon University School of Law where he made Dean’s List. Quinn was also a Pinkard Scholar at St. Mary’s Seminary & University in Baltimore, MD.


Quinn currently lives in Great Neck but is originally from Maryland where he attended the Gilman School. At Dickinson College, he played baseball in the Centennial Conference. In his spare time, Quinn enjoys playing golf and fishing. He also enjoys attending Yankees games, PGA Tour events, concerts, and spending time with his golden retriever, Holly. Quinn is an avid history fan and loves to read.