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.

Why That Number Matters

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, President Trump issued a stark ultimatum, stating he would “annihilate the Islamic Republic and do it quickly” if Iran does not reach a peace deal. Despite the rhetoric, Trump noted diplomacy remains possible after the November midterms, and U.S. envoys Steve Witkoff and Jared Kushner held talks with Iran mediators. Consequently, energy prices dropped below the $100 mark; Brent crude fell 1.00% to $98.26 per barrel. WTI crude declined 1.65% to $89.03 per barrel.

• Earnings & Eco Data: Investors await September’s flash U.S. manufacturing and services PMIs, scheduled for release at 9:45 a.m. ET. Wednesday’s earnings docket includes major reports from Cintas Corp. (NASDAQ:CTAS), Paychex Inc. (NASDAQ:PAYX), General Mills Inc. (NYSE:GIS), and Cracker Barrel Old Country Store Inc. (NASDAQ:CBRL) among others.

The Bull Case and Market Outlook

Institutional confidence in the artificial intelligence buildout continues to strengthen, masking broader market anxieties. According to technology strategist Luke Lango, Meta Platforms Inc.‘s (NASDAQ:META) Muse app is tracking near 70% of ChatGPT’s historic adoption curve, suggesting it will generate massive, continuous inference compute demand.

Furthermore, SoftBank’s recent $11 billion bond sale to fund its OpenAI investment was nearly 2x oversubscribed. Lango points out that this enthusiasm from conservative bond investors reflects genuine confidence in the durability of AI cash flows, rather than speculative hype.

How the Previous Bet Played Out

The Sept. 22 Polymarket contract resolved “Down.” The contract recorded $88,211 in total trading volume.

On Monday, the SPDR S&P 500 ETF Trust (NYSE:SPY) and Invesco QQQ Trust ETF (NASDAQ:QQQ), which track the S&P 500 and Nasdaq-100, respectively, closed mixed. SPY rose 0.016% to $773.38, while QQQ rose 0.81% to $747.46. Meanwhile, the Dow tracker, State Street SPDR Dow Jones Industrial Average ETF Trust (NYSE:DIA), ended 0.34% lower at $518.00.

Disclaimer: This content was partially produced with the help of AI tools and was reviewed and published by Benzinga editors.

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