Core Viewpoint - SL Green Realty (NYSE:SLG) is experiencing an increase in stock price due to an upgrade from Citi Research, which highlights the strength of the New York office market and an improving transaction environment in New York [2] Group 1 - SL Green Realty shares rose by 2.64% in post-market trading, reaching $65.00 [2] - The upgrade from Citi Research is attributed to the recent underperformance of the office REIT, indicating a potential turnaround in the market [2]