Signing a significant amount of new leases generally indicates a positive outlook for real estate companies like SL Green Realty Corp. This can lead to increased revenues from rental income, which is a critical factor for the company's financial health. The size of the lease, 104,000 square feet, is substantial, suggesting that SL Green is effectively attracting tenants to its properties. This news is likely to be viewed positively by investors, potentially leading to a short-term increase in SLG's stock price.