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

Aug 12, 2026
stock-market:-will-s&p-500-open-up-or-down-today?

Rishabh Mishra

2 min read

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U.S. stock futures are showing modest gains early Wednesday, as investors digest a mix of robust corporate earnings against the backdrop of an intensifying geopolitical impasse in the Middle East and an expected read on U.S. inflation.

The Polymarket (CRYPTO: POL) crowd is leaning bullish for the Aug. 12 trading session. The “S&P 500 (SPX) Up or Down on August 12?” contract currently reflects a 56% chance of a higher open.

Aug 12 S&P 500 Polymakret Odds.

Aug 12 S&P 500 Polymakret Odds.

Why That Number Matters

Traders are navigating a precarious balance between strong fundamentals and macro headwinds:

  • Slightly Positive Index Futures: Equity futures are pointing to a quiet, slightly positive open. As of late-night trading, S&P 500 futures were up 0.11%, while Nasdaq-100 futures were up 0.25%. Dow Jones futures and Russell 2000 futures also ticked up 0.01% and 0.06%, respectively.

  • Middle East Impasse & Energy Prices: Tensions in the Middle East have escalated, with reports of a suspected Houthi attack killing four crew members in the Bab el-Mandeb Strait and a U.S. Navy strike disabling a cargo ship off Pakistan, according to Reuters. Iranian official Mohsen Rezaei warned the Strait of Hormuz will remain closed until the U.S. meets Tehran’s conditions. Consequently, oil prices continue to rise: Brent crude futures hit $89.65 per barrel, and WTI crude futures rose to $84.00 per barrel, at the last check.

  • Inflation Checkup: All eyes are on July’s Consumer Price Index (CPI), core CPI, and year-over-year data, which will be released at 8:30 a.m. ET. Investors are looking for clues on whether the recent spike in energy prices will derail expectations for steady Federal Reserve policy.

The Bull Case and Market Outlook

Despite the geopolitical noise and concerns over AI-dominated leveraged ETFs causing excess volatility, underlying corporate strength continues to provide a tailwind. Market commentator Louis Navellier highlighted that Taiwan Semiconductor Manufacturing Ltd. (NYSE:TSM) saw July revenue rise 5.6% month-over-month and 44.7% year-over-year, which “bodes well for the entire semiconductor industry.”

View more earnings on $POL

Investors are also bracing for Wednesday’s earnings reports, with tech and semiconductor names like Cisco Systems Inc. (NASDAQ:CSCO), Coherent Corp. (NYSE:COHR), Nebius Group NV (NASDAQ:NBIS), and Cerebras Systems Inc. (NASDAQ:CBRS) stepping up to the plate.

How the Previous Bet Played Out: The Aug. 11 Polymarket contract resolved “Down.” The contract recorded $71,629 in total trading volume as global shares retreated amid renewed pessimism about a quick end to the Middle East conflict.

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