Aquiline's Flourish deal makes sweep revenue share a boardroom question

MassMutual has agreed to sell a controlling interest in Flourish, the cash-management and lending platform for independent RIAs, to Aquiline Capital Partners, handing a private equity owner authority over the revenue-sharing deals that underpinned the platform's growth. The deal, announced Wednesday, is expected to close in the fourth quarter; MassMutual, which bought Flourish in early 2021, will keep a minority stake.

Flourish serves more than 1,300 RIAs that manage $2.6 trillion in client assets, and its cash-sweep program has climbed from $1 billion five years ago to more than $8 billion, a run that has traveled alongside revenue-sharing agreements with large RIAs whose terms show up in Form ADV filings. Carson Group receives an unspecified share of Flourish's net revenue on customer cash plus sponsorship of its conferences and educational sessions; Mariner Wealth Advisors collects 0.08% of all revenue Flourish earns on Mariner client cash, plus a participation fee that trims clients' net interest by 0.20 percentage points; Focus Financial receives 0.10% of the client cash it holds with Flourish.

A controlling stake puts pricing and payout decisions in Aquiline's hands even though the announcement describes no immediate changes, and rewriting the revenue-sharing deals would be a blunt move because Flourish's expansion has depended on keeping large RIAs loyal. But the contracts were signed under MassMutual's watch, and the board that oversees them is about to answer to a private equity firm.

David Canter, a former Fidelity custody executive, will join as executive chairman when the deal closes; his statement calls cash management and lending 'foundational components of a comprehensive wealth management platform.' The appointment tilts toward RIA distribution, and Canter's pedigree may help Flourish press its case with firms that have not yet signed on.

For the 1,300 RIAs using Flourish, the deal is a prompt to treat the revenue-share rate as a negotiated term, not a loyalty reward. Carson, Mariner, and Focus have already put their rates in the public record, and the rest of Flourish's client base now has benchmarks against which to compare its own contracts. As this publication argued when Vanguard absorbed Altruist, the platform a practice runs on is a counterparty with its own economics to manage. Aquiline's return will be measured in basis points, and the basis points paid out to Flourish's RIA partners sit on the other side of that ledger; the first renewal after the deal closes will show which side wins.