Flourish | 3,675 followers on LinkedIn. The Flourish platform helps RIAs grow by evolving from holistic advice to holistic implementation. | The Flourish platform helps RIAs (Registered Investment Advisors) grow by evolving from holistic advice to holistic implementation. The Flourish platform supports more than $8 billion in assets under custody and is used by more than 1100 wealth management firms representing more than $2.6 trillion in assets under management. Flourish is wholly-owned by MassMutual.