On Friday, technology‑focused equities shed more than $1 trillion in market value as oil prices surged to levels not seen in five months. Brent crude rose past $110 per barrel shortly after 2:30 p.m. ET, closing the week at $109.86, the highest closing price since May 19. U.S. West Texas Intermediate (WTI) crude also broke the $100 barrier for the first time since September, finishing at $101.41 per barrel.
Market Impact
The Nasdaq‑100, which tracks the nation’s largest tech and AI‑linked companies, fell 2.5%, leaving the index roughly 7 % below its recent all‑time high set just a week earlier. The broader S&P 500 slipped 1 % and the Russell 2000 dropped 1.6 %. The Philadelphia Semiconductor Index experienced its eighth consecutive day of losses, falling 3.8 % and marking the longest losing streak since 2008.
Analysts linked the sharp sell‑off to renewed worries about ballooning corporate debt, elevated interest rates and the rapid rise in energy costs. The two worst‑performing Nasdaq‑100 stocks were data‑center firms Nebuius and CoreWeave; CoreWeave’s share price has declined more than 25 % over the past month.
Energy Prices and Geopolitics
Higher oil prices have intensified expectations that the Federal Reserve may raise rates again this year. The Fed already increased rates by a quarter‑point in September to counter inflation that was fueled by rising oil and gas costs. Diesel futures also rose more than 1 % on Friday, reflecting the fuel’s critical role in agriculture and industry.
The upward trend in energy prices began in early spring after the United States and Israel attacked Iran in late February, prompting the temporary closure of the Strait of Hormuz. More recently, escalations in the Russia‑Ukraine conflict have further tightened diesel supplies. Russia, traditionally a leading diesel exporter, has seen much of its refining capacity disrupted by Ukrainian attacks on energy infrastructure. On Friday, the Russian Defense Ministry reported that Ukraine attempted a massive attack on the Ryazan oil refinery, while Russian strikes have also targeted Ukrainian energy assets.
With global diesel production already near capacity in the United States and Europe, the market faces limited options for expanding supply.
Policy and Legislative Responses
President Donald Trump has highlighted the high cost of diesel as a driver of inflation ahead of the November 3 midterm elections. While he has promoted a proposed deal with Russian President Vladimir Putin to lower diesel prices, no Russian diesel has been confirmed in global markets, and a group of U.S. lawmakers introduced legislation to block the deal. The bill is unlikely to pass the Republican‑controlled House, but it underscores growing skepticism about the feasibility of a U.S.–Russia diesel arrangement.
Wells Fargo global real‑assets analyst Mason Mendez said the proposed legislation adds to “growing doubts that a U.S.-Russia diesel deal will come to fruition.” He also noted investor concerns about further military escalation in the Middle East, where attacks on commercial shipping and regional infrastructure have risen in recent weeks. Looking ahead to 2027, Mendez warned that rebuilding depleted global inventories could sustain demand and keep energy prices elevated for an extended period.
At the same time, trillion‑dollar technology firms continue to borrow heavily and invest billions in artificial‑intelligence projects and data‑center expansion. This week, market analyst Ed Yardeni lowered his year‑end S&P 500 target to 7,900 from 8,400, citing rising investor caution about AI valuations and lingering doubts about inflation and higher rates.
The convergence of soaring energy costs, heightened geopolitical risk and mounting debt pressures has created a volatile environment for both technology and broader equity markets, setting the stage for further scrutiny of corporate spending and monetary policy decisions in the weeks ahead.
Helene Elliott is the Lead Science & Space Reporter at News Raise. She reports on aerospace missions, astrophysics discoveries, quantum research, and environmental technology.
