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

U.S. stock futures are posting slight gains early Wednesday as Wall Street digests an aggressive UN address from President Donald Trump on Iran, cooling crude oil prices, and fresh bullish momentum in the AI sector. The Polymarket (CRYPTO: POL) crowd is leaning bullish for the Sept. 23 trading session. The “S&P 500 (SPX) Up or Down on September 23?” contract currently reflects a 62% chance of a higher open.

Traders are navigating mixed geopolitical signals, falling energy markets, and incoming PMI data:

Positive Index Futures: Equity futures are pointing to a green open across major benchmarks. Dow Jones futures rose 0.16%. S&P 500 futures advanced 0.11%. Nasdaq 100 futures gained 0.06%, and Russell 2000 futures ticked up 0.02%.

Geopolitics & Cooling Oil: Addressing the UN General Assembly, Pres...