Flourish
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Overview
Flourish is a wealthtech platform that provides registered investment advisors (RIAs) with cash management, lending, and annuities infrastructure they can offer to clients under their own brand. Its flagship product, Flourish Cash, sweeps client cash across a network of FDIC-member banks to provide deposit insurance well beyond the standard $250,000 limit while paying an interest rate advisors can pass on to clients.
The platform was originally built and operated by Stone Ridge Holdings Group, an alternative investment manager, and grew to serve more than 350 RIAs representing roughly $600 billion in combined assets under management before being sold. In December 2020, Massachusetts Mutual Life Insurance Company (MassMutual) announced it would acquire Flourish and its affiliated broker-dealer, Stone Ridge Securities, with the deal closing in 2021 and roughly 30 Flourish employees joining MassMutual while the business continued to operate as an independent fintech serving RIAs.
Under MassMutual ownership, Flourish has expanded well beyond cash management into lending and annuities, and has built integrations with major advisor technology platforms including Envestnet Tamarac and Orion Advisor Technology. As of early 2026, Flourish reported that its platform was used by more than 1,100 RIAs collectively managing about $2.6 trillion in assets, with more than $8 billion held in Flourish Cash accounts.
Private securities are speculative, illiquid, and involve risk of complete loss of principal. You should be prepared to hold private securities for an extended period; there is no assurance of a secondary market, an IPO, or other liquidity event. You are fully responsible for conducting your own due diligence. Pricing is indicative — nothing here is an offer of securities.