U.S. stock index futures were under pressure in premarket trading on Monday, with momentum dented by renewed military action targeting Iranian positions in the Persian Gulf and a market recalibration toward a more hawkish interest-rate outlook after Federal Reserve Chair Kevin Warsh's remarks at Jackson Hole.
Market snapshot:
- S&P 500 futures fell 0.15% to 7,701 points.
- Dow Jones Industrial Average futures slipped 0.19% to 53,484 points.
- Nasdaq 100 futures were little changed at 29,506 points, with rate-sensitive technology and semiconductor names notably subdued.
Crude oil reacted sharply to the geopolitical developments, trading notably higher in early action, amplifying caution among investors already reassessing policy expectations. That combination left risk assets on edge at the open.
Notable premarket movers
Tenax Therapeutics - Shares rose 3.8% in premarket trading after the company presented additional data from its Phase 3 LEVEL trial of TNX-103 (oral levosimendan) at the European Society of Cardiology Congress in Munich on August 29. The update showed a favorable treatment effect in patients who had lower baseline exercise capacity, and the apparent benefit increased with greater disease severity. The company and observers see the results as potentially strengthening the regulatory case for levosimendan in pulmonary hypertension associated with heart failure with preserved ejection fraction, a condition that currently lacks approved treatments.
Miniso - The retailer's stock fell 6.2% in premarket trading to $9.69, extending declines after the release of disappointing second-quarter results on August 28. Miniso reported earnings per share of negative 0.94 yuan versus expectations for positive 1.95 yuan, and revenue of 5.75 billion yuan came in below the consensus estimate of 5.81 billion yuan. Management called out weakness in international operations, which contributed only 10% to 15% of profit in the first half of 2026, down sharply from 35% to 40% in 2023. The company also reported a 10% decline in distributor revenue across Asia and Latin America, while weaker same-store performance in North America was linked to delays in intellectual-property product rollouts and shortages of popular items.
Snap - The social-media company rebounded, with shares up 4.1% to $5.65 in premarket trading, recovering some losses after a heavy legal-driven selloff last week. Shares had plunged approximately 9% on August 26 when Pennsylvania's attorney general filed a civil suit alleging Snapchat was designed to encourage compulsive use among minors through features cited in the complaint, including disappearing messages, infinite scrolling and restorable Snapstreaks. Monday's move represented a partial bounce following that decline.
Antelope Enterprise Holdings - The company saw a steep premarket jump, gaining 65.6% after disclosing a private placement totaling $18.99 million accompanied by warrants. The capital raise is sizable relative to Antelope's market value and prompted investor focus on the immediate liquidity impact. The company has also been pursuing a Bitcoin treasury strategy it calls the "Genius Plan" and has filed a $200 million mixed-securities shelf registration.
Pinterest - Shares fell 2.2% in premarket trading after Chief Financial Officer Julia Brau Donnelly announced she would resign to pursue another opportunity. Donnelly will remain with Pinterest until October 30 to facilitate the transition, according to a regulatory filing. The company stated her departure was not related to any disagreement regarding the firm's operations, policies, practices or accounting.
Analysis
Monday's session opened with macro and geopolitical cross-currents that pushed futures lower and augmented volatility, especially in sectors sensitive to rates and global risk. The jump in crude added pressure to the broader market sentiment, while individual corporate developments created sharp idiosyncratic moves among small- and mid-cap names. Healthcare and biotech headlines drove Tenax higher on potentially meaningful Phase 3 data; retail and consumer discretionary moves reflected operational strain for Miniso; legal risk and reputational concerns drove sharp swings in social media; and a financing announcement triggered a dramatic reaction for Antelope Enterprise.
What to watch - Traders and investors are likely to watch whether oil's rise persists amid Middle East tensions, how further commentary from Fed officials affects rate expectations, and whether the legal and operational developments highlighted in the premarket session translate into sustained stock moves during the regular trading day.