Boston, MA Income Research + Management (IR+M), the U.S. fixed-income manager with $88 billion in AUM, plans to relocate its headquarters to 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 the 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 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, said, “I’m encouraged that IR+M continues to be at the forefront of the sustainability movement in Boston and our industry. 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.”