The post is primarily a personal endorsement and does not contain any direct references to economic policies, industries, or companies that could significantly impact the stock market. Historically, Trump's endorsements have had mixed effects on the market, but in this case, the focus on a book and an individual in the entertainment industry suggests a limited and indirect influence on market sentiment. The lack of any regulatory or trade-related implications in the post further supports a neutral market sentiment score. As the post is not related to any specific industry or company, it is unlikely to cause significant volatility or changes in market confidence, resulting in a sentiment score of 50, indicating a neutral impact on the stock market.