Harborside Group | 1,439 followers on LinkedIn. Trusted Partner Helping Clients to Grow and Retain Assets | Founded in 2004, Harborside Group is an investment sales and financial marketing firm specializing in distribution for asset managers and financial advisors. Our first-hand knowledge of the marketplace enables us to develop effective campaigns to help you reach your sales and asset retention goals. We seek to understand what differentiates a firmʼs product and investment approach, and to deliver well-coordinated, thoughtful solutions.