US Stocks Slide as Brent Crude Tops $100, S&P 500 Drops 0.3% on Fresh Inflation Jitters 

Mumbai, Sept 9: US stock markets opened sharply lower on Wednesday as escalating military hostilities between the United States and Iran propelled global oil prices above the psychologically significant $100 per barrel threshold, reigniting concerns over inflation and the Federal Reserve’s monetary policy trajectory. 

The blue-chip Dow Jones Industrial Average tumbled 355 points (0.67%) to 52,430.88 in early trading, while the broader S&P 500 shed 18.41 points (0.24%) to 7,655.11, and the tech-heavy Nasdaq Composite declined 57.83 points (0.22%) to 26,363.58, according to market data. The sell-off extended losses from Tuesday’s holiday-shortened trading session, which saw all three major averages close in negative territory after the Labor Day weekend. 

The market downturn comes as investors grapple with multiple headwinds, including surging energy costs, rising Treasury yields, escalating trade tensions with Canada, and growing expectations of a Federal Reserve rate hike at the central bank’s September policy meeting. 

Brent Crude Tops $100, WTI Hits $95.80 as US-Iran Strikes Escalate 

The international benchmark Brent crude futures surged 2.9% to breach the $100 per barrel level for the first time since July, reaching $100.75 during Asian trading hours before settling around $100.02. Meanwhile, US West Texas Intermediate crude advanced approximately 3% to $95.80 per barrel, reflecting heightened geopolitical risk premiums in energy markets. 

The oil price spike follows a significant escalation in US-Iran military confrontations. US Central Command (CENTCOM) confirmed its forces “destroyed five Iranian crude oil carriers” on Tuesday in response to ballistic missile attacks by Iran’s Islamic Revolutionary Guard Corps targeting a US Navy warship. The Iranian forces subsequently launched missiles targeting US military positions in Jordan, with the IRGC also claiming to have targeted two US vessels and eight oil tankers attempting to navigate through the Strait of Hormuz. 

“The market isn’t just pricing today’s disruption, it’s pricing the odds of more disruption to come,” noted Mark Malek, Chief Investment Officer at Siebert Financial, in written commentary. The Strait of Hormuz, through which approximately 20% of the world’s oil supply passed before the conflict began in February, remains effectively closed to commercial shipping, according to supply reports. 

Daniela Hathorn, Senior Market Analyst at Capital.com, warned that “Houthi attacks on Saudi energy facilities have widened the threat further, raising concerns that disruption could spread beyond Iranian supply to the infrastructure and alternative routes that have helped keep Gulf crude flowing. That has brought the inflationary consequences of the conflict firmly back into focus.” 

The latest surge represents a 28% increase in oil prices since early August, adding substantial pressure on businesses and consumers already grappling with elevated inflation. US gasoline prices have risen approximately 32% year-over-year to $4.22 per gallon, while diesel prices—critical for shipping and production—hit an all-time high, reaching $5.94 per gallon overnight. 

Dow Jones Tumbles 0.6%, Nasdaq Slips 0.2% in Broad-Based Sell-Off 

The market decline was widespread, with nearly every sector within the benchmark S&P 500 losing ground. However, energy stocks bucked the downward trend, with Exxon Mobil gaining 2.5% and Chevron advancing 2.3% as crude prices rallied. 

The Dow Jones Industrial Average recorded its steepest decline in nearly three weeks, dropping 355 points to open at 52,430.88. The index’s losses were led by healthcare heavyweight UnitedHealth Group, which plunged 5.06%, and Booking Holdings, which tumbled 4.66%. Other significant decliners included Procter & Gamble (-1.53%), Goldman Sachs (-1.39%), and Amazon (-1.70%). 

The S&P 500, which closed Tuesday at 7,673.52 after a 0.58% decline, opened at 7,655.11 with further downside pressure. The index’s defensive sectors bore the brunt of selling, while energy names provided a cushion. The benchmark’s day range stretched from 7,646.91 to 7,660.68, with trading volume reaching 320 million shares in the opening hour. 

The Nasdaq Composite fell 0.22% to 26,363.58, with technology and growth stocks facing particular pressure as Treasury yields climbed. The index’s day range was 26,288.16 to 26,366.56, with trading volume of 1.44 billion shares. The tech-heavy index remains approximately 3% below its 52-week high of 27,190.21 reached earlier this year. 

“These are significant geopolitical developments that will affect inflation for the short term and maybe for the long term,” said Dr. Robert R. Johnson, Professor of Finance at Creighton University. “The events in the Middle East are a reminder that geopolitical risk can derail markets quickly, and the tremendous uncertainty is leading investors to sell first and ask questions later.” 

Meta Platforms Jumps 5.5%, Marvell Gains 6.1% Amid AI Optimism 

Despite the broader market weakness, select technology names delivered notable gains, underscoring the continued investor appetite for artificial intelligence-related stocks. 

Meta Platforms surged 5.50% to $646.30 after the parent company of Facebook and Instagram launched “Muse,” a personal artificial intelligence agent designed for users aged 18 and above. The AI assistant is intended to help with day-to-day tasks, including schedule management and shopping recommendations, marking Meta’s significant push into the consumer AI space. 

Marvell Technology rallied 6.09% to $240.10, continuing its strong performance in the semiconductor sector. The chipmaker’s gains were part of a broader rebound in tech hardware names, with Dell Technologies advancing 4.78% and Advanced Micro Devices climbing 3.71% in early trading. 

Other notable AI and semiconductor gainers included Arm Holdings (+4.28%), Micron Technology (+2.64%), and Western Digital (+1.71%). The continued strength in AI-related equities comes despite caution from some analysts about elevated valuations and potential headwinds from rising interest rates. 

However, not all technology names participated in the rally. Alphabet declined 2.59%, with its Class A shares dropping 2.38%, while Amazon fell 1.70% and Nvidia slipped 0.43%. The divergence highlights the selective nature of AI-related buying and suggests investors remain cautious about companies with less direct exposure to the artificial intelligence theme. 

Apple edged lower ahead of its highly anticipated product launch event scheduled for 1 pm ET, where incoming CEO John Ternus is expected to unveil the company’s first foldable iPhone. Shares of the tech giant were trading modestly lower as Wall Street awaited details on pricing, features, and the potential impact on Apple’s profit margins. 

10-Year Treasury Yield Hits 4.81%, Fed Rate Hike Odds Reach 60% 

US Treasury yields continued their upward trajectory on Wednesday, adding further pressure on equity valuations. The benchmark 10-year Treasury yield climbed two basis points to 4.81%, approaching its highest level in almost three years. The yield has risen sharply in recent sessions as investors price in the dual impact of surging energy costs and strong economic data. 

The move in yields reflects growing expectations that the Federal Reserve may be compelled to raise interest rates at its upcoming September policy meeting to combat resurgent inflationary pressures. According to CME Group’s FedWatch tool, markets are now pricing in a 62.4% probability of a 25-basis-point rate increase next week, a significant shift from earlier expectations of a pause. 

“The jump in oil prices threatens to complicate the Fed’s policy outlook by adding a fresh source of price pressure,” noted analysts. “The US-Iran conflict and disruptions around key oil infrastructure have pushed crude higher, while US gasoline and diesel prices have also risen. For investors, the concern is that sustained energy inflation could keep interest rates higher for longer.” 

Higher oil prices add to the Fed’s inflation dilemma in several ways. Directly, they raise consumer fuel costs, which feeds into headline inflation measures. Indirectly, higher energy costs increase production and shipping expenses across the economy, potentially lifting prices for a wide range of goods and services. Additionally, higher energy prices boost inflation expectations, which can become self-fulfilling as workers demand higher wages and businesses pass along increased costs. 

The US Treasury Department is also scheduled to announce the size of its buyback operation on Wednesday, with analysts from Vital Knowledge suggesting the repurchases could exceed initial guidance of $4 billion per operation and “perhaps be as large as $10 billion.” The buyback announcement adds another layer of complexity to bond market dynamics, potentially influencing yields and investor sentiment. 

“The bond market’s reaction to the buyback announcement could influence equities,” noted Reuters. “Higher yields on government securities can make stocks less attractive and increase financing costs across the economy.” 

US-Canada Trade Tensions Escalate as Trump Orders Import Ban 

Adding to investor unease, trade relations between the United States and Canada have deteriorated further, with President Donald Trump signing orders on Tuesday prohibiting imports of several categories of Canadian products, including alcoholic beverages, motorcycles, and dairy products. 

The restrictions, scheduled to take effect on 29 September, follow retaliatory Canadian tariffs on US goods that took effect after midnight on Tuesday. Canada’s measures came in response to the US introduction last month of 50% tariffs on $20 billion of Canadian goods. 

Canadian Prime Minister Mark Carney has indicated that Canada should consider expanding its trade relationships beyond the United States amid the dispute. The escalating trade tensions add another layer of uncertainty for businesses and investors already navigating geopolitical risks in the Middle East and inflationary pressures from rising energy costs. 

The combined impact of US-Canada trade friction and escalating Middle East tensions underscores the complex global environment facing investors and policymakers. “These trade tensions add to the inflationary pressures from higher oil prices,” noted Dan Coatsworth, Head of Markets at AJ Bell. “This type of ascent could leave businesses and consumers feeling sick at the thought of sharp cost increases and potentially higher borrowing costs if central banks choose to fight inflation with interest rate hikes.” 

Signet Jewelers Jumps 19% on Earnings Beat, Guidance Raise 

Signet Jewelers delivered one of the strongest performances of the session, with shares soaring 19.11% to $98.47 after the parent company of Kay Jewelers, Jared, and Zales reported second-quarter earnings that comfortably beat analyst expectations. 

The Hamilton, Bermuda-based jewellery retailer posted adjusted earnings of $2.19 per share, well above the $1.73 consensus estimate of analysts surveyed by FactSet. Revenue of $1.53 billion matched expectations, while same-store sales growth of 2.2% topped the 1.7% consensus estimate. 

Adjusted operating income of $107.2 million surpassed the $89.6 million Visible Alpha projection, while adjusted EBITDA of $152.3 million beat the $131.9 million estimate. “We delivered another quarter of comp sales growth with a positive comp performance in all fine jewellery brands,” said Signet CEO J.K. Symancyk. 

As a result, Signet raised its full-year guidance for adjusted EPS, adjusted operating income, and adjusted EBITDA. The company also lifted the low end of its same-store sales range to flat growth from a decline of 0.75%. “We are entering the back half of the year well-positioned to deliver compelling value throughout the holiday season for customers across a broad range of income levels,” Symancyk added. 

Casey’s General Stores Tumbles 17.7% Despite Revenue Beat 

Casey’s General Stores experienced a sharp reversal, with shares plummeting 17.69% to $603.75 after the convenience store chain reported earnings that disappointed on key operational metrics despite beating top-line expectations. 

The company delivered an earnings and revenue beat in its fiscal first-quarter financial report, but same-store sales growth decelerated compared to the prior year. Sales of prepared food and dispensed beverage, grocer and general merchandise, and fuel gallons all missed estimates, according to FactSet. 

Additionally, Casey’s management maintained its fiscal year 2027 outlook, which failed to impress investors given the company’s strong performance in 2026. Shares had been up more than 30% year-to-date as of Tuesday’s close, making the stock vulnerable to disappointing news. 

ServiceTitan was the session’s biggest decliner, with shares tumbling 29.01% to $57.92 after the company reported earnings that fell short of expectations. The Bancorp also suffered a sharp decline, falling 22.60% to $49.86, while Resolution Minerals dropped 18.01%. 

Inflation Data and Fed Policy Take Centre Stage 

Investor attention is shifting to upcoming August inflation data, with the Producer Price Index (PPI) due Thursday and the Consumer Price Index (CPI) on Friday. The reports could prove decisive for the Federal Reserve’s policy outlook ahead of its September meeting. Economists surveyed by Dow Jones expect headline and core CPI to rise 0.2% month-on-month. However, the recent surge in energy prices has increased the risk of an upside surprise. 

With Brent crude trading above $100 a barrel and oil prices up 28% since early August, markets are watching whether higher energy costs are beginning to feed into broader inflation. A hotter-than-expected CPI reading could strengthen expectations for tighter monetary policy, while softer data could ease pressure on equities. 

The near-term direction of US markets will depend on the interaction between oil prices, inflation data, Treasury yields and Fed rate expectations. With the 10-year Treasury yield at 4.81%, persistent inflation could reinforce expectations of higher interest rates for longer, potentially increasing borrowing costs and weighing on equity valuations. 

The Federal Reserve’s rate decision next week will therefore be closely linked to the incoming inflation figures and developments in energy markets. The European Central Bank’s policy decision on Thursday could also influence global rate expectations and market volatility. 

Meanwhile, the ongoing US-Iran military confrontation remains a key driver of oil prices. Any easing of geopolitical tensions could reduce pressure on crude and inflation expectations, while further escalation could intensify concerns over energy costs and monetary policy. Investors will therefore closely monitor the inflation releases and geopolitical developments for signals on the direction of global markets. 

With oil breaching $100 per barrel, markets are pricing heightened geopolitical risk and persistent inflation, driving Treasury yields toward multi-year highs and boosting Fed rate hike expectations. Investors should monitor upcoming US CPI and PPI data as well as Treasury buyback announcements for further direction. Energy sector equities may continue benefiting from rising crude prices, while interest rate-sensitive growth stocks face sustained headwinds from elevated bond yields. 

 Source 

• https://www.nasdaq.com/ 
• spglobal.com/spdji/en/indices/equity/sp-500/ 
• https://www.dowjones.com/ 
• https://www.spglobal.com/spdji/en/indices/equity/dow-jones-industrial-average/ 
• https://www.spglobal.com/spdji/en/indices/equity/sp-500/ 
• https://www.nasdaq.com/market-activity/index/comp 
• https://www.nasdaq.com/market-activity/quotes/nasdaq-ndx-index 
• https://www.spglobal.com/spdji/en/indices/equity/sp-100/ 
• https://www.lseg.com/en/ftse-russell/indices/russell-us 
• https://www.nyse.com/index 
• https://www.nyse.com/index 
• https://www.spglobal.com/spdji/en/indices/equity/dow-jones-transportation-average/ 
• https://www.spglobal.com/spdji/en/indices/equity/dow-jones-utility-average/ 
• https://www.spglobal.com/spdji/en/indices/equity/dow-jones-composite-average/ 
• https://www.nasdaq.com/market-activity/index/sox 
• https://www.cboe.com/tradable_products/vix/