Gagnon Securities LLC is an employee owned hedge fund sponsor. The firm primarily provides its services to individuals including high net worth individuals. It also caters to pooled investment vehicles, charitable organizations, and corporations. The firm manages separate client focused portfolios. It launches and manages hedge fund for its clients. The firm invests in the public equity markets of the United States. It conducts in-house research to make its investments. Gagnon Securities LLC was founded in 2000 and is based in New York City.