Marx Realty has announced that investment advisory firm Helix Partners Management signed a five-year, 7,000-square-foot lease on the eighth floor of 545 Madison. The firm is relocating from 399 Park Avenue.  

Marx Realty took over the 140,000-square-foot, 18-story office tower in 2019 with occupancy rates at 68%, which increased to almost full capacity. Asking rents now range from $88 to $130 per square foot, with prior rates ranging from $60 to $70 per square foot.  

As part of Marx Realty’s ongoing commitment to the environment, the company is planting three trees in the local community for each lease signed in any of its office properties. Helix Partners was represented by Greg Maurer-Hollaender of CBRE, while a Cushman & Wakefield team led by Tara Stacom represented Marx Realty.