The REIT lowered its guidance for the year amid a slowdown in new leases and rent cuts. : (Bloomberg)—SL Green Realty Corp., a major New York landlord, lowered its guidance for 2020 as it faces economic disruption from the coronavirus outbreak. The real estate investment trust said funds from operations, a key industry metric, would be $6.60 to $7.10 per share this year, down from its previous range of $7.25 to $7.35.