Income Research + Management to Move Headquarters to Boston’s Sustainability-Focused Winthrop Center

May 23, 2022

The move reflects a shared vision between the firm and the city of Boston for a responsible, resourceful, and renewable future of work

BOSTON, May 23, 2022 – Income Research + Management (IR+M), the U.S. fixed income manager with $88 billion in AUM, today announces its plans to relocate its headquarters to Boston’s Winthrop Center, a 691-foot mixed-use tower developed by MP Boston, a local arm of the internationally renowned developer, Millennium Partners. Created in collaboration with Handel Architects and MIT professors, Winthrop Center embraces sustainability and incorporates the exacting Passive House office design standards to become the world’s first Global Class A office building.

“We’re thrilled that Winthrop Center will be our new home in the fall of 2023,” said Bill O’Malley, IR+M’s CEO and Co-CIO.  “Our move is well-aligned with our core values, which emphasize the importance of our clients, community, and colleagues.  Additionally, our new office will reflect the extent of our sustainability commitment – and be an inviting space for all IR+Mers to gather and collaborate.”

Located in Boston’s financial district, Winthrop Center will be the largest Passive House office project in the world.  It will surpass LEED Platinum and set the most rigorous global standards for energy and efficiency. 

“MP Boston is proud to welcome IR+M to the City’s new preeminent address,” said Founder of Millennium Partners, Christopher M. Jeffries. “Winthrop Center is advancing Boston’s leadership position in mitigating climate change, and it is rewarding to partner with like-minded companies who share our goal to create a more sustainable future.”

“Winthrop Center embodies our continued evolution as a firm, which revolves around the value of diversity, equity, and inclusion, sustainability, and a hybrid work environment,” said Sarah Kilpatrick, Chief of Staff.  “We want to create the best experience for our clients and colleagues, and preserve our unique and thriving culture.  At Winthrop Center, we believe we can do exactly that.”

Allison Walsh, Head of ESG and Corporate Sustainability, concurred.  “I’m encouraged that IR+M continues to be at the forefront of the sustainability movement in Boston and our industry.”  She continued, “As a firm, we’re always engaging with clients, issuers, vendors, and employees on ESG and DEI, and learning together how we can all do better.”  

About Income Research + Management (IR+M):

IR+M is a privately-owned, independent, fixed income investment management firm that serves institutional and private clients. The firm manages $88 billion across cash management, insurance, liability driven investing, tax efficient investing and ESG and socially responsible investing strategies. IR+M’s investment philosophy and process are based on the belief that careful security selection and active risk management provide superior results over the long-term. By combining the capacity and technology of a larger firm with the culture and nimbleness of a boutique firm, IR+M strives to provide exceptional service for clients Visit:

IR+M Media Relations
Montieth & Company

About MP Boston:
For more information, please visit 

MP Boston Media Relations
Glodow Nead Communications

Back to Press Releases