Mr. Joiner is a Senior Financial Advisor at Martha's Vineyard Investment Advisors. He provides financial and estate planning and investment advising services to individuals, families, and organizations, and he believes that outstanding Customer Service is "the bedrock" of his career.

Most recently, Mr. Joiner was a manager and advisor for a national financial services company spanning nearly a 14-year career in both Phoenix, Arizona and Washington, DC. No stranger to various award recognitions, Grant was named to the Alexandria, Virginia Chamber of Commerce's "40 under 40" list in 2020 and also named as one of DCs "Best Financial Advisors" by Washingtonian Magazine in both 2014 and 2019.

Mr. Joiner holds a Bachelor of Science degree in marketing from Arizona State University and is a graduate of Martha's Vineyard Regional High School. Mr. Joiner is also a Certified Financial Planner^TM, an accredited Asset Management Specialist®, and a Chartered Mutual Fund Counselor®.