RSM US said on Tuesday it’s partnering with Arch, a digital alternatives management platform, on an initiative that equips the top five accounting firm’s family office, financial services, and private client teams with a tech-forward solution that makes managing alternative investments more efficient.
Arch integrates with FamilySight, RSM’s family office data management platform, to provide advisors with a holistic, up-to-date view into clients’ private markets portfolios by automating the time-intensive manual work traditionally associated with tracking private investments. RSM will use Arch’s artificial intelligence for summarizing both financial data and commentary from alternative investment documents, statements, and portals, allowing the Chicago-based accounting firm to further its digital experience to support real-time alternative investment portfolio monitoring.

“We are pleased to team with RSM, serving its diverse needs for private markets investment management across its family office, private client, and financial services businesses,” Ryan Eisenman, co-founder and CEO at Arch, said in a statement. “We wake up every day thinking about how we can revolutionize the complex and time-consuming process of managing alternative investments. Working directly with RSM inspires our team at Arch to continue building next-generation solutions that address the evolving needs of both private wealth advisors, family offices, and institutions.”
Arch collects K-1s digitally across portals, boosting productivity, enhancing decision-making, and creating better planning opportunities. The platform focuses on providing an end-to-end tax solution, including a real-time tracker for tax documents and automatically following up with asset managers for missing K-1s.

“Arch’s infrastructure simplifies and standardizes private investment management, addressing key challenges for high-net-worth families and enabling our advisors to deliver a top-tier digital experience,” said Matt Bradvica, partner and tax digital strategy leader at RSM. “At RSM, we’re committed to being a digitally driven firm, where transformative innovation is at the heart of all we do. Through our work with Arch, we’re equipping our team with a robust digital infrastructure that modernizes internal processes and creates new opportunities to deliver cutting-edge, personalized services to our clients in a fast-evolving digital world.”
In addition, Arch will bolster the ongoing rollout of Catamaran, RSM’s outsourced solutions suite for middle-market organizations, positioning RSM as a trusted advisor to financial services firms and managed services providers, according to a media release.
With more than $175 billion in private markets assets on the platform, Arch’s customer base has expanded to over 360 allocators, financial advisory firms, and banks, including four of the top 20 private banks, 100 registered investment advisers and multifamily offices, and 150 single-family offices.
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Tags: Accounting, alternative investments, Arch, RSM, Technology