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Rob Arnott Renames Firm Syzygy as He Leans Harder Into Active Investing

Published Sep 10, 2026
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Summary:
  • Rob Arnott sold RAFI Indices to TMX Group for $490 million; TMX agreed in June and closed on Aug. 18.
  • He kept the roughly $30 billion investment-management unit, now Syzygy Asset Management, staffed by 28 people.
  • Arnott and his team intend to expand their work in newer forms of active systematic approaches, including tax-aware long-short, even as Syzygy keeps managing assets for organizations such as Pacific Investment Management Co.

What changed and why it matters

Rob Arnott parted with the index franchise that helped put him on the map, selling RAFI Indices to TMX Group for $490 million. TMX struck the deal in June and finished it on Aug. 18. He retained the investment-management arm overseeing about $30 billion and reintroduced it as Syzygy Asset Management with 28 employees. The remaining business adopted the Syzygy name the same day the sale closed.

Arnott launched Research Affiliates in 2002 in Newport Beach, California, and spent years challenging how indexes are built. The Research Affiliates Fundamental Index selects and sizes holdings based on business metrics such as sales and cash flow, rather than allocating the most to the largest companies by market cap. TMX Group's VettaFi unit supplies indexes and ETF data, which lines up with what it bought.

The team, the tilt toward active, and the name

The plan now is more active. Working with Research Affiliates veterans Jim Masturzo and Katy Sherrerd, Arnott, 72, is building new equity and multi-asset approaches and putting together a platform focused on tax-aware long-short investing. "We're good at active management," said Arnott, 72. "Our best new thinking will continue to flow first into our existing clients' strategies, in parallel with creating some high-octane active strategies, involving concentration and leverage." Syzygy will also continue overseeing assets for organizations such as Pacific Investment Management Co., carrying forward ties established at Research Affiliates.

The name Syzygy refers to the alignment of celestial bodies and nods to Arnott's eclipse-chasing streak. He spoke following a trip to Mallorca to witness August's total solar eclipse.

When strategies evolve, keeping a steady plan helps protect and grow your savings. Join Briefs Finance CEO Jaspreet Singh on September 29th for a FREE live investor workshop, How to Profit From A Dollar That's Losing its Value, where he shows how we're spotting investment opportunities as the dollar falls. Save your spot.

Product design and the tax-aware push

A top expansion area is tax-aware long-short portfolios. These take long positions in certain stocks and short others, potentially generating losses that can be used to counterbalance clients' taxable gains in other accounts. Interest has jumped, and Bloomberg recently reported that about $1 trillion is allocated to the wider family of approaches designed to lessen or postpone investors' tax liabilities.

Syzygy is finalizing the packaging for its tax-aware long-short lineup, considering an exchange-traded fund, a limited partnership, all of the above, or another format. "We know how to do it," Masturzo said.

What this means for your portfolio

Expect Syzygy's newest ideas to first show up inside existing client mandates, while more concentrated and leveraged offerings are built in parallel. If you follow Research Affiliates' work or invest with managers like Pacific Investment Management Co., the menu is likely to include more active, tax-aware choices from a team with a head start and a full contact list.

Adapting your investment approach with care can preserve capital and pursue growth. Our CEO Jaspreet Singh is hosting a FREE live investor workshop, How to Profit From A Dollar That's Losing its Value, on September 29th. Sign up free to join him live.

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