Accountancy Giant RSM Explored Potential IPO
The 100-year-old firm is assessing a public stock market flotation to secure capital for global expansion.
Updated on Oct. 1, 2026 in Public Companies
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RSM is currently sounding out bankers to evaluate a potential initial public offering. The move aims to secure significant capital to support major acquisitions and international growth.
Why it matters
The firm faces intensifying competition from private equity-backed rivals. Executives are weighing a public listing if they conclude that corporate needs outpace the capital available from current partners.
RSM is the fifth-largest accountancy in the U.S. and seventh-largest globally, backed by an alliance generating over $5 billion in annual revenue. The firm is currently revamping internal financial systems to align with public company standards.
The players
RSM
It is the fifth-largest accountancy in the U.S. and the seventh-largest firm globally by revenue.
Andersen Group
This firm holds a market capitalization of approximately $6 billion following its December 2025 stock market debut.
CBIZ
This company served as the only standalone accounting firm on the U.S. stock market for three decades before its acquisition agreement.
Grant Thornton
This accounting firm entered an agreement to acquire CBIZ for $5 billion in July 2026.
The details
RSM has operated as a partnership for 100 years and previously returned to private ownership in 2011 after a stint with H&R Block. The leadership is now shifting toward a potential flotation to better compete with firms like Andersen Group, which recently listed on the New York Stock Exchange.
Timeline
RSM returned to private ownership in 2011.
RSM Tenon collapsed in 2013.
Andersen Group floated on the New York Stock Exchange in December 2025.
CBIZ agreed to be acquired by Grant Thornton for $5 billion in July 2026.
RSM is currently exploring a potential IPO as of October 2026.
Market Landscape
RSM's exploration follows the December 2025 Andersen Group IPO, which set a market valuation benchmark for accounting firms in the public sector. This shift signals a broader move away from traditional partnership models as accounting firms seek public capital to outpace private equity competitors.
For current clients, an IPO could signal changes in the firm's operational structure, service offerings, or billing transparency as it adheres to new regulatory requirements. Investors should watch for further announcements regarding the timeline and potential valuation of the public float.
The takeaway
The move toward a public listing marks a major transition for century-old partnerships attempting to scale against high-capital private equity rivals. Readers should monitor whether other mid-market accounting firms announce similar shifts toward public markets.
Further reading
Learn more about the latest corporate moves in Public Companies.
Source note: This article includes information reported by Financial Times News.
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