Capstone Partners | 28,831 followers on LinkedIn. A full-service investment bank built for the middle market. | For over 20 years, Capstone Partners has been a trusted advisor to leading middle market companies, offering a fully integrated range of investment banking and financial advisory services uniquely tailored to help owners, investors, and creditors through each stage of the company's lifecycle. Capstone's services include M&A advisory, debt and equity placement, corporate restructuring, special situations, valuation and fairness opinions and financial advisory services. Headquartered in Boston, the firm has 175+ professionals in multiple offices across the U.S.