The revision in FFO per share outlook by First Industrial Realty Trust is a direct response to the broader economic uncertainty and a more cautious approach by businesses towards leasing. This adjustment, although slight, signals potential challenges in the real estate sector, particularly in industrial realty, which could lead to a negative short-term impact on the stock price. The company's acknowledgment of these challenges and the adjustment of its financial outlook may lead investors to reassess the stock's value, potentially resulting in a decrease in stock price.