On Friday, July 17, 2026, major U.S. stock indexes declined following a week of losses, while oil prices experienced a sharp surge due to escalating fighting in the Middle East between the United States and Iran.
Stock Index Performance
The three primary benchmarks finished the session lower: the Nasdaq Composite fell 1.4%, the S&P 500 dropped 1%, and the Dow Jones Industrial Average decreased by 0.8%. For the entire week, the losses continued, with the Nasdaq shedding 2.9%, the S&P falling 1.6%, and the Dow declining 0.9%. This marked a historical point, as it was the first time since the week of June 5 that all three major indices posted weekly losses.
Oil Prices and Commodities
Global oil prices jumped following reports from U.S. Central Command (CENTCOM), which stated on X that forces had struck “dozens of Iranian military targets.” CENTCOM also noted that “more than 50,000 U.S. service members are operating across the Middle East and remain vigilant, lethal, and ready.” Prices rose further after Kuwait announced that Iran had targeted one of its power generation facilities and a water distillation plant.
- West Texas Intermediate (WTI) futures, the U.S. benchmark, increased by approximately 4%, reaching $82.15 a barrel at 4 p.m. ET.
- Brent crude futures, the global standard, advanced 4.2% to $87.75 a barrel.
In other financial markets, gold futures rose by 0.7% to $4,020 an ounce. The U.S. dollar index remained relatively flat at 100.74, and the 10-year Treasury yield was reported near 4.55%, decreasing one basis point from Thursday’s close.
Tech Sector Challenges and Individual Stock Movements
The technology sector faced headwinds as concerns about Artificial Intelligence (AI) spending contributed to widespread declines in chip stocks. Shares of Taiwan Semiconductor Manufacturing Co. (TSM), the world’s largest contract chipmaker, closed down nearly 3% on Friday after having declined over 2% the previous day, despite TSM increasing its full-year forecast for capital expenditures.
Several major tech companies saw their stock prices fall:
- Netflix (NFLX): Shares plummeted 7.5% to a two-year low after the streaming service indicated that revenue growth was slowing in the third quarter.
- SpaceX (SPCX): The company’s shares fell another 5%, reaching a fresh post-IPO low, following an aborted Starship rocket test flight held the day before. This decline marked a sixth consecutive day of losses for the stock.
- Alphabet (GOOGL): Shares retreated 2% after leading declines at about 4.5% on Thursday. These earlier drops were influenced by a Bloomberg report suggesting that its Google unit was “months behind schedule” in delivering its flagship AI model, Gemini 3.5 Pro.
Mixed Signals and Outliers
Not all sectors declined, and some companies reported standout results amid the market downturn.
- Memory Stocks Rebound: On Friday afternoon, memory chip firms staged a comeback. Shares of Sandisk (SNDK), SK Hynix (SKHY), Seagate Technology Holdings (STX), and Western Digital (WDC) rose by approximately 6%, 5%, 3%, and 2%, respectively. The Roundhill Memory ETF (DRAM) also increased by 3% during the trading day.
- Travelers Insurance (TRV): Shares of Travelers surged 8%, leading both the S&P 500 and Dow Jones Industrial Average after reporting strong second-quarter earnings. The New York firm reported adjusted “core” earnings of $10.04 per share, significantly surpassing the consensus estimate of $5.37 from Visible Alpha. CEO Alan Schnitzer stated that,
The strong results we have delivered in the first half of the year reflect durable underlying fundamentals, the discipline with which we manage our balance sheet and the successful execution of our winning strategy.
- Coca-Cola (KO): The beverage giant was the worst performer on the Dow Jones Industrial Average after disclosing a “ransomware event” involving its dairy subsidiary, Fairlife. Shares dropped 4.5% in afternoon trading after stating that unauthorized access by a third party had occurred at portions of its systems, leading to a temporary suspension of U.S. production operations at Fairlife.
Broader Market Context
The S&P 500 Communication Services Sector was particularly weak, falling 2.8% in late morning trading and contributing to the benchmark index’s overall decline of 0.9%. Conversely, the Energy sector led gains within the indexes at nearly 1%.
In other developments, Apple (AAPL) surpassed Nvidia (NVDA) to become the world’s most valuable public company by market capitalization. Shares of Nvidia fell about 4.5% in early trading, allowing Apple’s stock to reach a market cap of about $4.91 trillion, compared to Nvidia’s figure of $4.81 trillion.
