Stock Market: Will S&P 500 Open Up or Down Today?

U.S. stock futures are showing slight gains as traders respond to President Trump's aggressive UN address regarding Iran, which has contributed to a decline in crude oil prices. The S&P 500 futures indicate a 62% chance of a higher open on September 23, with Dow Jones futures up 0.16% and S&P 500 futures up 0.11%. Brent crude fell 1.00% to $98.26 per barrel, while WTI crude declined 1.65% to $89.03 per barrel. Investors are also awaiting key PMI data and earnings reports from companies like Cintas Corp. and Paychex Inc.