Rabina’s 520 Fifth Ave. inks four leases - bringing the property to 40% leased
Manhattan, NY Rabina, the New York-based, family-owned and operated real estate investment and development firm inked four office leases at 520 Fifth Ave., bringing the office component of the tallest mixed-use building on Fifth Avenue to more than 40% leased.
Joining the growing roster of tenants at 520 Fifth Ave. are Headlands Technologies LLC, a global quantitative trading company, which will be expanding its New York City space and profile when it relocates to the 1,002-ft.-tall tower; Abrams Capital, a Boston-based public and private investment firm, relocating from 65 East 55th St.; MFA Financial Inc., a specialty finance company investing in residential mortgage loans, mortgage-backed securities, and other real estate assets, which is relocating their New York office from nearby One Vanderbilt; and 1823 Partners, an asset management firm specializing in liability-aligned investments, that is expanding within the building to a full, dedicated floor.
“The addition of four new office tenants in such a short period speaks to the strong demand for the workplace experience we’ve created at 520 Fifth Ave.,” said Josh Rabina, president and CEO of Rabina. “We designed the office floors with today’s workforce in mind — focused on thoughtful design, flexibility, and spaces that truly support how teams work. The momentum we’re seeing, with firms like Headlands Technologies, Abrams Capital, MFA Financial Inc., and 1823 Partners choosing the building, reinforces 520 Fifth Ave.’s position as one of New York City’s standout Class A office addresses.”
Headlands Technologies is a leading global quantitative trading firm headquartered in Chicago, with offices in New York, London, Amsterdam and Singapore. The firm will occupy 12,256 s/f on the ninth floor of 520 Fifth Ave.
“We bring together the brightest and most driven minds in the world, empowering them to do the most impactful work of their careers,” said Chris Klopotowski, partner, head of Infrastructure of Headlands Technologies. “We’ve always believed that the work environment plays a vital role in how people think, collaborate, and perform. 520 Fifth offers a universally convenient location, thoughtfully designed spaces and an exceptional suite of amenities that support our team in doing their best work every day.”
Abrams Capital is an investment firm that focuses on long-term equity and debt investments across a range of sectors. Notably, the company also serves as a major equity partner in 520 Fifth Avenue and will occupy 6,799 s/f of office space in the building.
“We are extremely excited to relocate our New York office to 520 Fifth Avenue, where our team will be able to work in a beautiful environment,” said David Abrams, founder and managing partner of Abrams Capital. “The building’s state-of-the-art infrastructure and top-notch amenities, coupled with its convenient Fifth Avenue location, will allow us to operate efficiently from a premier business center. We truly value our longstanding partnership with Mickey, Josh and their outstanding team.”
Listed on the New York Stock Exchange since April 1998, MFA Financial Inc. has grown into a leading New York–based real estate investment trust specializing in U.S. residential mortgage assets. Led by CEO Craig L. Knutson, the firm generates shareholder returns through a leveraged investment strategy and, through its subsidiary Lima One Capital, provides business-purpose lending to real estate investors nationwide. The company will take 12,246 s/f of office space on the 10th floor of 520 Fifth Ave.
“Our relocation to 520 Fifth Ave.is a strategic move to align MFA Financials’ continued workplace needs with a high-quality and forward-looking office space,” said Craig Knutson, CEO and director of MFA Financial Inc.
Launched in July 2025, 1823 Partners is an asset management firm with $19 billion of assets under management and expertise in real assets, asset-backed finance, and specialty credit. The firm will occupy 10,299 s/f in the building.
“Securing a dedicated full floor at 520 Fifth Ave. reflects our rapid expansion and the need for a premier New York Headquarters. This space supports our ongoing mission to deliver strong risk-adjusted and liability-aligned returns for our institutional clients,” said Anant Bhalla, co-founder and CEO of 1823 Partners.
Benjamin Bass, Paul Glickman, Frank Doyle, Clark Finney, Harrison Potter and Robin Olinyk of JLL represented Rabina in all the transactions. Headlands Technologies was represented by Joseph Harkins from Cushman & Wakefield and Abrams Capital was not represented by a broker, while MFA Financial Inc. was represented by Josh Friedman, Bill Levitsky and Andy Sachs of Newmark, and 1823 Partners was represented by Neil King of CBRE.
“520 Fifth Ave. continues to set itself apart in the market, particularly through the sustained strength of its office leasing,” said Benjamin Bass, vice chairman of JLL. “With several transactions completed and additional deals actively advancing, the property is attracting companies that view it as a long-term workplace aligned with performance, stability, and growth.”
JLL serves as the official leasing company for the building’s commercial office space.