News & Insights

ARC Group to grow multi-family office services as S&P Dow Jones Indices deal closes

01 October 2025, Stephen McMahon

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ARC Group to grow multi-family office services as S&P Dow Jones Indices deal closes

ARC Group announces that the sale of its subsidiary ARC Research to S&P Dow Jones Indices ('S&P DJI'), a division of S&P Global (NYSE: SPGI), has been completed after receiving regulatory approvals.  

The completion of the sale of ARC Research and its ARC Wealth Indices – the world's largest proprietary dataset of investment outcomes for private investor portfolios – will underpin the ARC Group’s strategy to drive forward its award-winning advisory division, which advises on $25 billion in assets for international families and charities. 

Stephen McMahon, CEO of ARC Group, says: “There is no better home for ARC Research and the ARC Wealth Indices than S&P DJI. We look forward to hearing of the continued growth and success of the Indices.”

“But the ARC Group will not be resting on its laurels. We are, perhaps, the largest multi-family office no one has ever heard of, but that is going to change. We have exciting plans for our private client and charity advisory business as we bring additional resources to bear following the S&P Dow Jones deal.

“We are now solely focused on helping clients worldwide formulate and implement efficient investment strategies across all asset classes. Leaning on our extensive analytical and data experience, we are looking to build compelling active and passive investment solutions with our existing providers, providing greater transparency to the private client asset arena.”

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