Providing Investment Services to Individual and Institutional Clients Since 1969 Graybill, Bartz & Associates is an independent SEC Registered Investment Advisory firm serving individual and institutional clients since 1969. As a Registered Investment Advisor, the firm is held to a fiduciary standard, meaning we are legally required to put our clients’ best interests first. This is foundational to everything we do at the firm. We strive to help our clients achieve their long-term financial goals and assist them in all aspects of their financial decision making.