James “Jim” Muller Jr., a longtime Wall Street executive who held senior roles at ITG, Fidelity Investments, Euromoney Institutional Investor and Refinitiv, passed away unexpectedly on November 7, 2026, at the age of 65.
Muller spent more than three decades in institutional trading, fixed income and financial technology, with much of his career focused on institutional sales, business development and industry networking.
Most recently, he worked in Fixed Income Solutions, focusing on key strategic accounts and partnerships at Refinitiv, part of the London Stock Exchange Group (LSEG). According to his LinkedIn profile, he joined the company in December 2020. His obituary states that he retired in 2025.
Before Refinitiv, Muller spent more than seven years at Euromoney Institutional Investor, where he held several senior positions.
From January 2018 to April 2020, he served as Managing Director of the Fixed Income Investor Network (FIIN), overseeing more than 90 member firms across North America and Europe, according to his LinkedIn profile. His work included organizing events and networking opportunities for structured finance asset managers investing in asset-backed securities (ABS), collateralized loan obligations (CLOs) and commercial mortgage-backed securities (CMBS).
Earlier at Euromoney, he was Sales Manager and Executive Director of Business Development for Membership Groups and Conferences. According to his LinkedIn profile, he managed a global B2B sales team generating more than $50 million in sales. He also founded Trader Forum Latin America and organized conferences serving institutional investors, asset managers, sovereign wealth funds, endowments and foundations.
Muller spent 14 years at ITG, from 1997 to 2011, where he served as Managing Director and held leadership roles in institutional sales and business development. His responsibilities included managing sales teams in electronic trading, algorithmic brokerage and alternative trading systems.
He also led sales for ITG’s MacGregor XIP order management system following its acquisition and participated in the integration of acquired businesses, including Hoenig and Radical Corporation, into ITG.
Prior to ITG, Muller was Vice President at Fidelity Investments from 1996 to 1997, where he launched the firm’s New York institutional sales office.
Earlier in his career, Muller worked at Institutional Investor from 1991 to 1996. During that time, he founded the Fixed Income Forum and Financial Technology Forum and served as Director of Trader Forum, bringing together buy-side fixed income managers and technology executives from asset management firms.
Muller earned a bachelor’s degree in general science from Villanova University in 1983 and an MBA from New York University’s Stern School of Business in 1991.
His obituary described him as “charismatic and endlessly curious” and highlighted his strong work ethic and dedication to his family.
Tributes posted alongside the obituary also reflected his impact on former colleagues. Richard Johnson, who worked with Muller at ITG, wrote: “Jim taught me the ropes when I was a young salesperson at ITG.”
Outside of Wall Street, Muller enjoyed sailing and running. He served as Commodore of the Normandy Beach Yacht Club in 2014 and completed the New York City Marathon twice.
Muller is survived by his wife, Mary “Muffin” Muller; their five children, Jimmy, Gus, Billy, Betsy and Ceci; and his four siblings.
Visitation will be held on November 13, from 3 to 7 p.m., at St. Rose of Lima Church in Short Hills, New Jersey. A Funeral Mass will take place at the same church on November 14 at 10 a.m.
In lieu of flowers, the family has requested donations to Save Barnegat Bay, the American Red Cross or St. Rose of Lima Parish.
