SL Green Realty Corp is a real estate investment trust (REIT) that specializes in the acquisition, development, and management of commercial properties, primarily in the New York City area. They own and operate a diverse portfolio of office buildings, retail spaces, and mixed-use properties, catering to a wide range of tenants.

The stock of SL Green Realty Corp (SLG) is currently making new highs, indicating a strong upward trend. This breakout suggests that the stock is experiencing positive momentum and may continue to climb higher. The bullish trend is supported by positive technical indicators, such as a rising moving average and increasing trading volume. Additionally, the stock's relative strength index (RSI) is in a healthy range, indicating strong buying interest. Traders and investors may consider this as a potential opportunity to participate in the stock's upward movement as the trend remains positive.