U.S. stocks retreated for a second consecutive session on Monday as investors navigated rising oil prices, elevated Treasury yields, and growing uncertainty surrounding geopolitical tensions in the Middle East. The market pullback comes after the S&P 500 and Nasdaq reached fresh record highs last week, highlighting how quickly investor sentiment can shift when inflation fears and global risk factors begin pressuring valuations.

Technology Stocks Lose Momentum as Yields Rise

The Nasdaq Composite declined roughly 0.7% while the S&P 500 slipped 0.2%, extending Friday’s losses after a sharp rise in global sovereign bond yields rattled equity markets. The Dow Jones Industrial Average managed modest gains, supported by more defensive sectors as investors rotated away from growth-oriented technology shares.

Technology stocks, which have largely driven Wall Street’s rally throughout 2026, faced renewed selling pressure as Treasury yields remained near multi-month highs. The U.S. 30-year Treasury yield recently reached its highest level in nearly a year, while long-term government bond yields in Japan and the United Kingdom also climbed sharply.

Higher bond yields create a particularly difficult environment for high-growth technology companies because future earnings become less attractive when discounted against rising interest rates. This dynamic has become increasingly important as investors reassess whether current market valuations remain sustainable in a prolonged higher-rate environment.

The Nasdaq-100 index already suffered its worst single-day decline since March during Friday’s session, signaling that investors may be beginning to reduce exposure to some of the market’s most crowded artificial intelligence and semiconductor trades.

Memory Chip Concerns Add Pressure to Semiconductor Stocks

Semiconductor shares also weakened after comments from Seagate Technology’s chief executive reignited concerns about supply constraints within the memory chip industry.

Seagate shares dropped roughly 7% after management warned during a JPMorgan conference that building additional manufacturing facilities would take too long to meet surging demand. The remarks intensified concerns that memory chip producers may struggle to keep pace with accelerating artificial intelligence infrastructure spending.

Micron Technology fell alongside the broader memory sector as investors questioned whether supply limitations could eventually slow AI-related growth across data centers and cloud infrastructure markets.

The semiconductor industry has been one of Wall Street’s strongest-performing sectors during the AI boom, but investors are now becoming increasingly sensitive to operational bottlenecks, manufacturing constraints, and valuation risks after months of aggressive gains.

Oil Prices and Geopolitical Risks Fuel Inflation Concerns

Meanwhile, oil prices continued climbing as geopolitical tensions between the United States and Iran remained unresolved. West Texas Intermediate crude traded above $105 per barrel while Brent crude hovered near $109, reinforcing fears that energy-driven inflation may remain elevated through the second half of the year.

President Donald Trump’s latest warning to Iran over stalled peace negotiations added further uncertainty to markets already concerned about shipping disruptions through the Strait of Hormuz. Investors increasingly worry that prolonged instability in the region could sustain upward pressure on energy prices and complicate global economic growth prospects.

At the same time, recent inflation data has reduced expectations for near-term Federal Reserve rate cuts. Markets now increasingly believe policymakers may need to maintain restrictive monetary policy longer than previously anticipated, especially if higher oil prices continue feeding into broader consumer inflation.

Looking ahead, investors will closely monitor developments surrounding the Middle East conflict, Treasury yields, and upcoming corporate earnings reports, particularly from major technology companies. Markets remain highly dependent on artificial intelligence optimism and resilient corporate earnings, but continued increases in oil prices and borrowing costs could challenge the sustainability of the current rally if inflation pressures intensify further.