AI-Native Wealth Manager Arca Raises $64M

Arca, a new AI-native wealth management firm founded by former Plaid executive Rron Rexha, has emerged from stealth with $64 million in total funding. The firm has quickly surpassed $1 billion in client assets following the acquisition of Maryland-based RIA Sandbox Financial Partners and a seeding partnership with Granite Bay Wealth Management. This launch signals a significant shift in the wealth management sector toward integrating advanced artificial intelligence to automate administrative burdens while maintaining high-touch advisor-client relationships.

Rron Rexha, previously a product leader at Plaid, has launched Arca with substantial backing to redefine the wealth management experience through artificial intelligence. The firm secured a $15.5 million seed round led by Venrock and a $48.5 million Series A round led by General Catalyst, with additional participation from Index Ventures. Arca’s strategic direction is supported by a high-profile board and advisory group, including former Vanguard CEO Bill McNabb, Altruist CEO Jason Wenk, author Morgan Housel, and former Schwab CFO Peter Crawford.

The firm’s rapid growth to over $1 billion in assets under management was facilitated by the May 2026 acquisition of Sandbox Financial Partners, a Bethesda-based RIA managing approximately $682 million. Additionally, Arca was seeded through Granite Bay Wealth Management, a New Hampshire-based firm established by former Wells Fargo advisors Joseph Skees and Paul Stanley. Currently, Arca employs 28 people across its engineering, product, and wealth management operations, with plans to use the new capital to expand its advisor network and refine its technology platform.

Arca’s core value proposition centers on an AI-native infrastructure designed to automate the manual and repetitive administrative tasks that often consume an advisor's time. By streamlining these operational mechanics, the firm aims to allow financial professionals to focus on the human elements of high-touch advisory services. Industry veterans like Bill McNabb and Jason Wenk emphasized that while AI will handle the operational noise, the advisor remains the essential engine for providing personalized financial advice and long-term impact for clients.