SL Green Closes $1.3B Opportunistic Debt Fund

December 8, 2025

Finance Featured Investment National More New York Northeast Office

The platform leverages the gap between improving fundamentals and the rebound in debt capital markets.

SL Green Realty Corp. has reached the final closing on its SLG Opportunistic Debt Fund, with total capital commitments exceeding $1.3 billion. Additional investment capacity is provided by sidecar structures and discretionary separate accounts, the REIT noted.

One Vanderbilt, SL Green's headquarters in Manhattan — One Vanderbilt, SL Green’s headquarters in Manhattan. *Image by Max Touhey, courtesy of SL Green*

The fund topped its initial $1 billion fund-raising objective back in July, with commitments from institutional investors across North America, Europe, Asia and the Middle East. Concurrently, SL Green secured substantial capital in bespoke sidecar partnerships and discretionary separate account mandates aimed at pursuing larger-scale and more complex opportunities aligned with the fund’s investment strategy.

The fund was launched in 2024 to focus, in SL Green’s phrasing, “on capitalizing on the dislocation between rapidly improving leasing fundamentals and the early stages of improving debt capital markets.”

SLG Opportunistic Debt Fund reportedly is targeting high-quality assets in New York City and will originate new loans and/or purchase existing loans, loan portfolios and controlling CMBS securities.

In a prepared statement, Harrison Sitomer, chief investment officer at SL Green, referenced a strong pipeline of debt investment opportunities in a rapidly shifting market.

An SL Green spokesperson did not reply to Commercial Property Executive’s request for additional information.

Big and active

With interests in 53 buildings totaling 30.7 million square feet, including ownership interests in 27.1 million square feet of Manhattan buildings, SL Green highlights its position as “Manhattan’s largest office landlord.”

And a spate of recent deals fully supports that stature.

At the start of September, the REIT agreed to acquire two adjacent historic buildings, at 346 Madison Ave. and an adjacent building at 11 E. 44th St. in Manhattan, for $160 million. Catalyst Brands is the seller of the two buildings, which total 254,707 square feet.

Barely 10 days later, a joint venture of SL Green and PGIM Real Estate closed on a $1.4 billion fixed-rate mortgage loan to refinance 11 Madison Ave., a 2.3 million-square-foot office building in Manhattan’s Flatiron District.

And in mid-October, SL Green announced plans to acquire Park Avenue Tower, a 36-story trophy building, from Blackstone for $730 million. The deal is expected to close in early 2026.