S&P 500 Nasdaq Open Higher as Oil Prices Retreat

The S&P 500 and Nasdaq opened higher on Tuesday as a retreat in Oil Prices eased some concerns about inflation and economic costs, while renewed optimism around the technology sector helped lift investor sentiment.

The opening gains came as investors assessed falling crude prices alongside fresh reports about Anthropic’s planned public offering. The developments helped improve sentiment toward technology stocks and offset weakness in the Dow Jones Industrial Average.

S&P 500 and Nasdaq Rise at the Open

The S&P 500 rose 15.9 points, or 0.21%, to 7,699.60 shortly after the opening bell.

The Nasdaq Composite gained 84.22 points, or 0.31%, to 26,904.60, extending the technology-heavy index’s positive momentum.

In contrast, the Dow Jones Industrial Average fell 64.6 points, or 0.13%, to 51,416.96 at the open.

The different performances showed that investors were placing greater emphasis on technology and growth stocks as oil prices eased and new developments in the AI industry supported sentiment.

Oil Prices Retreat After Recent Gains

The decline in oil prices was one of the main factors supporting the broader market at the start of Tuesday’s session.

Crude prices had recently surged because of concerns about disruptions to Middle Eastern energy supplies. The latest retreat provided some relief to investors worried about the effects of higher energy costs on inflation, consumers and corporate profit margins.

Brent crude was trading around $103 a barrel after falling earlier in the session, while U.S. West Texas Intermediate crude also declined.

Oil prices remain significantly higher for the month, however, meaning investors continue to monitor developments in the Middle East closely.

Why Falling Oil Prices Can Help Stocks

Lower crude prices can benefit financial markets because energy costs affect businesses and consumers across the economy.

When oil becomes more expensive, transportation and production costs can increase. Companies may face pressure on profit margins, while consumers can spend more on fuel and other goods and services.

Lower oil prices can reduce some of those pressures and potentially ease concerns about inflation. This can be particularly important when investors are assessing the outlook for interest rates.

However, the effect varies between sectors. Energy companies can benefit from high crude prices, while industries that use large amounts of fuel may benefit when oil prices decline.

Anthropic IPO News Boosts Technology Sentiment

Technology stocks also received support from reports detailing Anthropic’s planned public offering.

Anthropic’s IPO prospectus revealed rapid revenue growth alongside extremely high costs associated with computing infrastructure and AI development. The company reported nearly $4.6 billion in revenue in 2025 and an operating loss of about $8.06 billion.

The prospectus also indicated that Anthropic could seek a valuation of more than $2 trillion, highlighting the enormous investor interest surrounding leading artificial intelligence companies.

Fresh information about the potential listing helped reinforce optimism around the broader technology and AI investment theme.

AI Remains a Major Focus for Investors

Artificial intelligence has become one of the most important themes in U.S. equity markets as companies invest heavily in computing infrastructure, data centers, chips and AI software.

Large technology companies have committed substantial resources to developing AI systems and expanding the infrastructure required to train and operate them.

The potential public offering of Anthropic gives investors another opportunity to assess the financial economics of the AI industry. Its prospectus highlights both the rapid growth of AI demand and the enormous costs involved in competing at the frontier of the technology.

Investors are therefore watching whether AI-related companies can continue delivering strong revenue growth while eventually improving profitability.

Dow Underperforms the Broader Market

The Dow’s decline contrasted with gains in the S&P 500 and Nasdaq.

The Dow contains a different mix of companies from the technology-heavy Nasdaq, meaning it can respond differently to developments affecting growth stocks and technology companies.

Tuesday’s opening performance suggested that technology sentiment was providing support to the broader market even as some other stocks remained under pressure.

Oil and Inflation Remain Key Market Risks

Despite the latest decline in crude prices, energy remains an important risk for investors.

Oil prices have risen sharply during September because of concerns over Middle Eastern supply disruptions. A sustained increase in crude could put upward pressure on inflation and complicate expectations about U.S. monetary policy.

Higher inflation can affect stock valuations because investors may expect interest rates to remain elevated for longer. Higher borrowing costs can particularly affect companies whose valuations depend heavily on future growth.

The recent retreat in oil prices therefore provided some relief, but investors remain sensitive to any new developments that could disrupt energy supplies.

Middle East Conflict Continues to Influence Markets

The oil market remains closely connected to the conflict involving the United States, Israel and Iran.

Investors are monitoring crude exports from major Middle Eastern producers as well as shipping conditions around important energy routes.

Recent data has shown signs of recovering crude exports from the region, including increased shipments from Saudi Arabia and the United Arab Emirates. Saudi Arabia has also resumed oil loadings from Yanbu after restarting its East-West Pipeline.

These developments have helped improve the supply outlook, although transportation remains more complicated and expensive than under normal conditions.

What Investors Are Watching Next

• Oil prices: Further declines could reduce concerns about inflation and corporate costs.
• Middle East developments: Any renewed disruption to energy supplies could quickly reverse the recent decline in crude prices.
• AI stocks: Investors will continue assessing the growth and spending plans of major AI companies.
• Anthropic’s IPO: The company’s proposed public offering could become an important benchmark for AI valuations.
• Interest rates: Inflation and economic data will remain important for expectations about Federal Reserve policy.
• Corporate earnings: Investors will continue evaluating whether strong technology spending is translating into sustainable revenue and profits.

Why the Market Open Matters

The opening moves provide an early indication of investor sentiment but do not determine where the major indexes will finish the trading session.

Tuesday’s initial gains in the S&P 500 and Nasdaq showed that investors were responding positively to lower oil prices and developments in the technology sector. The Dow’s decline demonstrated that the market response was not uniform across all major companies.

Trading could remain sensitive to developments in oil markets, geopolitical news and technology-sector announcements throughout the session.

Technology Stocks Remain Central to Market Sentiment

The latest market action reinforces the importance of technology and artificial intelligence to U.S. equities.

Investors have placed significant value on companies positioned to benefit from AI adoption, but the sector is also facing greater scrutiny over valuations and the enormous costs required to build AI infrastructure.

Anthropic’s prospectus illustrates both sides of that story. Its rapid revenue expansion demonstrates strong demand, while its large operating losses and infrastructure commitments show the financial resources required to compete.

For public-market investors, the next stage of the AI trade will increasingly involve assessing not only technological progress but also revenue quality, spending efficiency and long-term profitability.

U.S. Stocks Open Higher as Investors Balance Growth and Risk

The S&P 500 and Nasdaq started Tuesday’s session higher as falling oil prices reduced some pressure on the market and fresh Anthropic IPO details supported technology sentiment.

The gains came against a backdrop of continued geopolitical uncertainty and elevated energy prices. While Middle Eastern crude exports are showing signs of recovery, investors remain alert to the possibility of renewed supply disruptions.

The combination of oil prices, inflation expectations, interest rates and AI-related investment is likely to remain important for U.S. stocks as the market moves through the final days of September.

Frequently Asked Questions

How did the S&P 500 open on September 29, 2026?

The S&P 500 rose 15.9 points, or 0.21%, to 7,699.60 at the opening bell, according to Reuters.

How did the Nasdaq perform at the open?

The Nasdaq Composite gained 84.22 points, or 0.31%, to 26,904.60 at the start of Tuesday’s trading session.

Did the Dow Jones also rise?

No. The Dow Jones Industrial Average fell 64.6 points, or 0.13%, to 51,416.96 at the open.

Why did oil prices support U.S. stocks?

Lower oil prices can reduce concerns about inflation, transportation costs and corporate expenses, potentially improving investor sentiment toward equities.

Why is Anthropic affecting technology stocks?

Reports about Anthropic’s potential IPO highlighted strong growth in the AI sector and renewed investor interest in technology companies involved in artificial intelligence.

What valuation could Anthropic seek in its IPO?

Anthropic could seek a valuation of more than $2 trillion, according to its IPO prospectus reported by Reuters.

What are the biggest risks for U.S. stocks right now?

Key risks include renewed oil supply disruptions, persistent inflation, interest-rate uncertainty, geopolitical developments and questions about valuations and spending in the technology and AI sectors.

Will the opening gains determine where the market finishes?

No. Opening prices can change significantly during the trading session as investors respond to economic data, company news, oil prices, geopolitical developments and other market factors.