Our Story
In 2008, Greg Farrington and Boris Onefater transformed an industry with Constellation Advisers, setting a new gold standard in institutional back-office services. Over 12 remarkable years, the firm expanded its footprint to over 500 global clients and cultivated a team of 120 professionals spread across six U.S. locations.
Greg and Boris built their reputations as founders of Constellation Advisers, where they helped pioneer the outsourced services model for alternative investment managers and reshape how investment firms approach back-office infrastructure. After selling Constellation Advisers to a strategic acquirer in December 2020, they remained to help lead a combined global business serving more than 1,700 clients with approximately 500 professionals until their exit in May 2022.
With decades of experience building and scaling comprehensive service platforms, Greg and Boris launched Stable Rock to bring that same operational rigor, strategic insight, and service-first philosophy to small and mid-sized businesses, founders, and individuals. Stable Rock was designed as an integrated platform delivering CFO support, accounting, tax, operations, compliance, HR, insurance, and technology-enabled automation to organizations seeking institutional-quality infrastructure without building it internally.
In February 2026, Greg and Boris reentered the investment and asset management industry through Stable Rock, relaunching the evolution of comprehensive back-office infrastructure and services for investment managers. Today, Stable Rock extends its platform to investment and asset managers while continuing to serve growing businesses and entrepreneurs, combining proven experience with modern service models and AI-driven innovation to meet the demands of a rapidly changing industry.
Then
2009
Launched outsourced CFO & Accounting Business.
2011
Launched outsourced Regulatory & Compliance business.
2011
2014
Launched outsourced COO/Operational Services business.
2015
Embarked on expanding client-facing office locations throughout the U.S.
2015
2018
Opened a near-shoring location in North Carolina to support U.S. business
2019
Constellation Advisers secured capital form a private equity partner to invest in its global expansion strategy
2019
2020
Constellation Advisers was sold to a strategic international buyer
2022
Upon completion of successful transition of Constellation Advisers to strategic buyer, Greg and Boris exited the business. In Q4, Farrington and Onefater founded Stable Rock Solutions.
2022
2023
Stable Rock Solutions acquires Rosenberg Chesnov
2024
Acquired Charles Grossman CPA and True Compare PEO.
2024
2025
Acquired mac-tech, LLC and launched our Insurance Services division.
2026
Acquired BMW Management CPA, P.C., launched our AI & Automations Services division, and launched Investment & Asset Management Services
2026
Now
Meet the Founders
Boris Onefater, CPA
Boris brings over 35 years of expertise in business, accounting, and finance, having held pivotal roles from Partner and National Director at Deloitte to CEO, COO, and CFO of a $20 billion investment management firm. His leadership prowess is evident in his recent venture, Constellation Advisers LLC, which saw a remarkable 30%+ annual growth. This venture culminated in its successful sale to a private equity firm and, subsequently, to a strategic buyer, delivering significant value to all involved.
Boris has been a guiding force for numerous public and private entities as a strategic advisor and Board Member. He earned his BS in Accounting and Finance from NYU and is a Certified Public Accountant in New York. Additionally, he cofounded the Investment Management Due Diligence Association (IMDDA).
Greg Farrington
Greg’s experience in outsourcing and business infrastructure spans a 22+ year management consulting career. Greg co-founded Constellation Advisers LLC, a global firm with 120+ professionals serving 500 clients. His leadership prowess is evident in his recent venture, Constellation Advisers LLC, which saw a remarkable 30%+ annual growth. This venture recently culminated in a significant exit benefiting partners and investors alike. Greg's expertise encompasses business outsourcing, due diligence, regulatory compliance, internal controls, and financial infrastructure.
Before this, he was a key member in the Investment Management Consulting Department at Deloitte. As a dedicated board member, Greg emphasizes governance and infrastructure in various organizations. He graduated from the University of Western Ontario, majoring in Economics and Finance. Additionally, he cofounded the Investment Management Due Diligence Association (IMDDA).